Report of Contributions

2016 CAP Congress / Congrès de l’ACP 2016

https://indico.cern.ch/e/CAP2016 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Nanoengineeri …

Contribution ID: 980 Type: Oral (Non-Student) / orale (non-étudiant)

**WITHDRAWN** Nanoengineering materials: a bottom-up approach towards understanding long outstanding challenges in condensed matter science Thursday, 16 June 2016 08:30 (15 minutes)

Chemists have made tremendous advances in synthesizing a variety of nanostructures with control over their size, shape, and chemical composition. Plus, it is possible to control their assembly and to make macroscopic materials. Combined, these advances suggest an opportunity to “nanoengineer” materials ie controllably fabricate materials from the nanoscale up with a wide range of controlled and potentially even new behaviours. Our group has been exploring this opportunity, and has found a rich range of material electronic behaviours that even simple nano-building blocks can generate, e.g. single electron effects, metal-insulator transitions, semiconductor transistor-like conductance gating, and, most recently, strongly correlated electronic behaviour. The latter is particularly exciting. Strongly correlated electrons are known to lie at the heart of some of the most exotic, widely studied and still outstanding challenges in condensed matter science (e.g. high Tc superconductivity in the cuprates and others).

The talk will survey both new insights and new opportunities that arise as a result of usingthis nanoengineering approach. The talk will also outline how such materials have provided inspiration for new technologies.

Primary author: Prof. DHIRANI, Al-Amin (University of Toronto) Presenter: Prof. DHIRANI, Al-Amin (University of Toronto) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 1 2016 CAP Congr … / Report of Contributions Quantitative Magnetic Resonance …

Contribution ID: 981 Type: Oral (Non-Student) / orale (non-étudiant)

Quantitative Magnetic Resonance Imaging of the Hippocampus in Single Transgenic Mouse Models of Alzheimer’s Disease Thursday, 16 June 2016 08:45 (15 minutes)

In this study, quantitative magnetic resonance imaging (MRI) was used to determine if it could detect atrophy and microstructural changes in the hippocampus, and damage to peripheral white matter (WM) structures in mouse models of Alzheimer’s disease (AD). The aim of ourstudywasto determine if T1 relaxation, diffusion tensor imaging (DTI), and quantitative magnetization transfer imaging (qMTI) metrics could reveal changes within the hippocampus and surrounding WM structures in ex vivo transgenic mouse brains with the goal of these changes being used as biomarkers for AD. Mice were either wild type controls (n=6), or had overexpression of the presenilin-1 (PS1) protein (n=6) or the amyloid precursor protein (APP) (n=6), and were imaged at 7.5 months of age using a 7T MRI system. Three coronal slices were selected in each mouse to span the hippocampus. Anatomical details visible in DTI color maps allowed delineation of hippocampal cell layers, which contained more significant differences between groups of mice than did the entire unsegmented hippocampus. This work demonstrates that multiparametric quantitative MRI methods are useful for characterizing changes within the hippocampus and surrounding WM tracts of APP and PS1 mouse models of AD.

Primary authors: WHITTAKER, Heather (Biopsychology, University of Winnipeg); THIESSEN, Jonathan (Imaging Program, Lawson Health Research Institute); MARTIN, Melanie (Physics, Univer- sity of Winnipeg and Radiology University of Manitoba); BUIST, Richard (Radiology, University of Manitoba); ZHU, Shnghua (Pharmacology and Therapeutics, University of Manitoba); LI, Xin-Min (Psychiatry, University of Alberta)

Presenter: MARTIN, Melanie (Physics, University of Winnipeg and Radiology University of Mani- toba) Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 2 2016 CAP Congr … / Report of Contributions **WITHDRAWN** A nanogap, im …

Contribution ID: 982 Type: Oral (Non-Student) / orale (non-étudiant)

**WITHDRAWN** A nanogap, impedance microchip for sensitive and surface tunable sensing Thursday, 16 June 2016 13:15 (15 minutes)

We have microfabricated and evaluated the performance of nanogap conductivity/dielectric constant sensors with a novel architecture. The “apertured impedance microchips” (AIM) feature aluminum metal/silicon-oxide/silicon layers, where the top metal layer has apertures and the middle oxide layer has wells. This layered yet open geometry enables molecules to have accessto detection electric fields induced by a voltage applied between the top metal/bottom silicon electrode layers. Our design rationale surmised that the AIM device’s large footprint area and thin nanoscale oxide layer should enable impedance detection of molecules with high sensitivity in a variety of solvents. The present study confirms this hypothesis and explores the effects thatsimple surface modifications have on the device’s response.

Specifically, devices were incorporated into a high performance liquid chromatography (HPLC) system already equipped with an ultra-violet–visible (UV–vis) detector. A range of analytes was injected using both normal and reverse phase modes; and the signals generated by each microchip device and UV–vis detector were recorded simultaneously and compared. The microchip devices’ responses were found to vary for analytes according to the surface modification used. To demonstrate the novel dielectric constant capability of AIM, as a case study, an AIM device was used to detect left and right handed versions a synthesized chiral molecule separated by a chiral column using an insulating eluent, namely hexanes/isopropanol.

Primary author: DHIRANI, Al-Amin (University of Toronto) Presenter: DHIRANI, Al-Amin (University of Toronto) Session Classification: R2-6 General Instrumentation II (DIMP) / Physique générale des instruments II (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 3 2016 CAP Congr … / Report of Contributions Innovative use of collaborative vid …

Contribution ID: 983 Type: Oral (Non-Student) / orale (non-étudiant)

Innovative use of collaborative video annotation system in physics teacher education Thursday, 16 June 2016 09:30 (15 minutes)

At the University of British Columbia (UBC) we educate 8-14 future physics teachers annually. Most of them already have B.Sc. degrees in physics or related fields, while some are a completing the B.Sc. concurrently. As part of their secondary teacher education program, teacher-candidates participate in a 3-credit physics methods course taught by the author. Its goal is to help teacher- candidates to acquire Pedagogical Content Knowledge (the knowledge about physics teaching). In order to practice its implementation in a classroom-like situations, teacher-candidates teach four 10-15 minute long mini-lessons during the course. This practice is especially important, as in order to complete the teacher education program, they have to complete successfully a school-based 13- week practicum where they teach real students (under teacher’s supervision). To achieve this goal, we started using Collaborative Learning Annotation System (CLAS) (http://ets.educ.ubc.ca/clas/) developed by our UBC colleagues and freely available to the students. CLAS allows physics teacher- candidates to upload videos of their mini-lessons and collaboratively comment and reflect on them. As a result, every teacher-candidate received multiple feedback about their lessons from their peers, the course Teaching Assistant, and the course instructor. During the feedback stage, all of us commented on mini-lessons emphasizing their strengths and suggesting areas for improvement. Then teacher-candidates were asked to incorporate relevant suggestions and reteach the lessons. From teacher-candidates’ feedback and our observations, we found CLAS to be extremely useful for preparing future physics teachers. It is especially valuable considering English is not the first language for many of our teacher-candidates. We hope that other faculty members involved in physics (and in general mathematics and science) teacher education will consider incorporating CLAS in their courses.

Primary author: MILNER-BOLOTIN, Marina (The University of British Columbia) Presenter: MILNER-BOLOTIN, Marina (The University of British Columbia) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 4 2016 CAP Congr … / Report of Contributions A 16-Microcantilever Array Sensin …

Contribution ID: 984 Type: Oral (Non-Student) / orale (non-étudiant)

A 16-Microcantilever Array Sensing System for the Rapid and Simultaneous Detection of Analyte Thursday, 16 June 2016 13:30 (15 minutes)

A new 16 microcantilever sensor system for performing sensing experiments in liquid or gas will be presented. The system uses two 8-microcantilever arrays held in a sensor cell. The microcantilever deflections are monitored by oscillating two focused optical beams over the microcantilevers such that only one microcantilever is illuminated at one time and each microcantilever is illuminated approximately once per second. The optical beams are moved using a motorized translation stage. The reflected optical beams are detected by a two-axis photo-sensitive detector (PSD) producing a series of two eight peak shaped patterns. The raw data from both the PSD and the translation stage are used to fold the peak shaped patterns from each array one on top of the other so thatthe deflection of the cantilevers can be obtained from the change in height of each peak. The stability of the data was found to be dependent on the speed of the translation stage. When the translation stage was operated between 0.5 and 1 mm/s, the deflection of each microcantilever in units of surface stress was found to be highly reproducible and consistent between arrays. The system was used to detect Ca2+, Sr2+ and Cs+ ions using different calix[4]arene-based sensing layers. The results obtained were found to be reproducible and completely consistent with results obtained using a typical two single microcantilever sensor system.

Primary author: Dr BEAULIEU, Luc (Physics Dept, Memorial University) Co-authors: Mr ALODHAYB, Abdullah (Physics Dept, Memorial University); Prof. GEORGHIOU, Paris E. (Chemistry Dept, Memorial University); Dr RAHMAN, S.M. Saydur (Physics Dept, Memorial University); Dr RAHMAN, Shofiur (Chemistry Dept. Memorial University) Presenter: Dr BEAULIEU, Luc (Physics Dept, Memorial University) Session Classification: R2-6 General Instrumentation II (DIMP) / Physique générale des instruments II (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 5 2016 CAP Congr … / Report of Contributions Neutron star mergers: neutrino e …

Contribution ID: 985 Type: Invited Speaker / Conférencier invité

Neutron star mergers: neutrino emission and nucleosynthesis Monday, 13 June 2016 15:45 (30 minutes)

Neutron-star binary mergers are interesting for several reasons: they are proposed as the progenitors of short gamma-ray bursts, they have been speculated to be a site for the synthesis of heavy elements, and they emit gravitational waves possibly detectable at terrestrial facilities. Our current understanding of the merger evolution and the production of new elements is linked to details of nuclear physics and gravity. In particular, a key ingredient is the neutrino emission which is subjected to a strong gravitational field and influences the matter neutron-richness. In this talk, I shall discuss some aspects of the binary system evolution and the impact of neutrinos on the synthesis of elements.

Primary author: CABALLERO, Olga Presenter: CABALLERO, Olga Session Classification: M3-1 Nuclear Astrophysics (DNP) / Astrophysique nucléaire (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 6 2016 CAP Congr … / Report of Contributions Nonclassical diffusion in a nondeg …

Contribution ID: 986 Type: Invited Speaker / Conférencier invité

Nonclassical diffusion in a nondegenerate ultracold gas Wednesday, 15 June 2016 15:30 (30 minutes)

We study the crossover from classical to quantum diffusion by studying the equilibration of longitudinal spin domains in a trapped 87Rb sample just above quantum degeneracy. By controlling the degree of spin coherence in the domain wall, we can dramatically alter the relaxation dynamics of the system. Coherence in the domain wall leads to transverse-spin-mediated longitudinal spin diffusion that is slower than classical predictions, as well as altering the domains’ oscillation frequency. We also investigate an instability in the longitudinal spin dynamics as the longitudinal and transverse spin components couple, and a conversion of longitudinal spin to transverse spin is observed, leading to longer lived coherent spin oscillations.

Primary author: MCGUIRK, Jeffrey (Simon Fraser University) Presenter: MCGUIRK, Jeffrey (Simon Fraser University) Session Classification: W3-6 Cold and Trapped Atoms, Molecules and Ions (DAMOPC) / Atomes, molécules et ions froids et piégés (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 7 2016 CAP Congr … / Report of Contributions Welcome to the New Age: Realiza …

Contribution ID: 987 Type: Invited Speaker / Conférencier invité

Welcome to the New Age: Realization of an Ultra-Accurate, Single Ion Clock at the Quantum Mechanical Stability Limit Monday, 13 June 2016 15:45 (30 minutes)

There is now a revolution underway in ultra-accurate measurements of frequency and timeus- ing optical atomic transitions probed with highly coherent laser light. By suspending a single atomic ion using an electro-dynamic trapping field and reducing its velocity by laser cooling, we can approach, as close as possible, the ideal situation of an isolated and unperturbed quantum system. Laser sources that probe the atom can now be made so spectrally pure that they can be used as phase-stable sources of electro-magnetic radiation. In addition, the use of femtosecond laser technology now enables us to continuously measure the cycles of light from the reference and provide a working standard for time. Using such powerful methods, our team has realized an optical atomic frequency/time reference at 445-THz (674 nm) based on a single atomic ion of strontium. This talk will overview some of the exciting concepts making up such experiments and will include evaluated accuracies of this system (at 1.2 × 10−17 fractional uncertainty) that exceed by over a factor of ten the best current realizations of the definition of the SI second. Recently, we have demonstrated that such a single ion frequency standard can reach the level of stability limited by the principles of quantum mechanics. At this level of accuracy and stability, it is now possible to measure the distortion of local time due to Earth’s gravitational field by changes of the clock height at the sub-meter level. Further refinement of the systematic shift evaluation promises to bring the evaluated uncertainty down into the 10−18 fractional uncertainty level. Some observations will be made as to what we expect these new generation optical clocks to yield in terms of the redefinition of the SI unit second, probing nature’s weakest force (gravity), and other sensitive tests of Physics.

Primary author: Prof. MADEJ, Alan (NRC/ MSS, York University, University of Ottawa) Co-authors: Dr JIAN, Bin (York University Physics and Astronomy Dept. /NRC, Frequency and Time group); Dr DUBÉ, Pierre (NRC, Frequency and Time group) Presenter: Prof. MADEJ, Alan (NRC/ MSS, York University, University of Ottawa) Session Classification: M3-2 Atomic and Molecular Spectroscopy and Precision Measure- ments II (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision II (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 8 2016 CAP Congr … / Report of Contributions Recent developments in characteri …

Contribution ID: 988 Type: Invited Speaker / Conférencier invité

Recent developments in characterization of Quark-Gluon Plasma Tuesday, 14 June 2016 16:45 (30 minutes)

For the past two decades, two powerful heavy ion accelerators, the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC), have ushered in a new era of high energy nuclear physics. When the temperature reaches above 200 MeV/kB, quarks and gluons are no longer confined inside hadrons. Instead, they form a plasma state. This new state of nuclear matter, Quark- Gluon Plasma (QGP), existed for about a microsecond after the Big-Bang. QGP is about a hundred thousand times hotter than the centre of a star and denser than the core of a neutron star, yetflows more freely than any known fluid. At RHIC and the LHC, collisions of heavy ions now routinely create QGP and the research is entering the precision measurement stage. To understand the properties of QGP, it is essential that we understand the many stages of relativistic heavy ion collisions theoretically which includes understanding the structure of the colliding nuclei, perturbative and non-perturbative QCD, hydrodynamics of QGP, hadronic re-scatterings and electromagnetic radiations in hot medium. In this talk, I will summarized McGill theory group’s effort in exploring this extreme state of matter and what we have learned so far of its rich and often surprising properties.

Primary author: JEON, Sangyong (McGill University) Presenter: JEON, Sangyong (McGill University) Session Classification: T3-1 Hadronic Structure (DNP) / Structure hadronique (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 9 2016 CAP Congr … / Report of Contributions Careful treatment of the effects of …

Contribution ID: 989 Type: Oral (Non-Student) / orale (non-étudiant)

Careful treatment of the effects of cc¯ narrow resonances in B → K∗µ+µ− observables Thursday, 16 June 2016 10:00 (15 minutes)

A careful analysis of B → K∗µ+µ− observables should consider the long-distance effects of the resonances in the short-distance dominated region. Here, we take into account the narrow resonance effects in the nonresonance region when calculating the differential decay rateandthe forward-backward asymmetry in this decay. In doing so, we use a Breit- Wigner model for the resonances with momentum-dependent decay constants, a model that fits the data on photoproduction and the leptonic widthof ψ and ψ′ simultaneously

Primary author: AHMADY, Mohammad (Mount Allison University) Co-author: SANDAPEN, Ruben (Université de Moncton) Presenter: AHMADY, Mohammad (Mount Allison University) Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 10 2016 CAP Congr … / Report of Contributions Search for supersymmetric partne …

Contribution ID: 990 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Search for supersymmetric partners of gluons and third generation quarks in events with b-jets and large missing transverse momentum in 13 TeV proton-proton collisions at the LHC using the ATLAS detector. Wednesday, 15 June 2016 09:45 (15 minutes)

Supersymmetry, a generalisation of the space-time symmetries which associates a new boson to each Standard Model fermion and vice-versa, must be obervable near the weak scale in order to solve the hierarchy problem. If the lepton and baryon numbers are conserved, the lightest supersymmetric particle is stable and interacts only weakly providing a viable dark matter candidate. Searches for supersymmetry at the LHC are thus highly motivated. A search for strong production of pairs of gluinos, the supersymmetric partner of the gluon, decaying via sbottom and stop quarks, the supersymmetric partners of the bottom and top quarks, is reported. A 3.3 fb-1 13 TeV proton-proton LHC dataset, recorded by the ATLAS detector, is used. This sample is probed for events containing several high transverse momentum jets, of which at least 3 must be identified as originating from b-quarks, large missing transverse momentum, and potentially isolated charged leptons. Massive large-radius jets, indicating the presence of highly boosted top quarks, are also used. No significant deviation from the Standard Model prediction is observed and limits are set in the gluino-neutralino mass plane in the framework of simplified models of gluinos decaying via sbottom and stop quarks. Large increase in cross-sections for gluino pair-production with respect to the 8 TeV LHC and the recent installation of the Insertable B-Layer at the center of the ATLAS detector, which appreciably improves the b-jet identification performance, allows the previous limits tobe significantly increased using the relatively small 2015 LHC dataset. For neutralino masses below approximately 700 GeV, gluino masses of less than approximately 1.8 TeV are excluded at the 95% CL in both models, constituting the current world-wide best limits in these frameworks and some of the biggest improvements with respect to LHC run 1 searches so far.

Primary author: GAGNON, Louis-Guillaume (Universite de Montreal (CA)) Presenter: GAGNON, Louis-Guillaume (Universite de Montreal (CA)) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

September 29, 2021 Page 11 2016 CAP Congr … / Report of Contributions Search for supersymmetric partne …

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 12 2016 CAP Congr … / Report of Contributions Ultrahigh Vacuum Terahertz Scan …

Contribution ID: 991 Type: Invited Speaker / Conférencier invité

Ultrahigh Vacuum Terahertz Scanning Tunneling Microscope Wednesday, 15 June 2016 13:15 (30 minutes)

The terahertz scanning tunneling microscope (THz-STM) is a new system for ultrafast imagingof surfaces at the nanoscale. Previous experiments have shown a spatial resolution of 2 nm and temporal resolution of 500 fs under ambient conditions. Currently, the THz-STM is being developed for operation in ultrahigh vacuum. The challenges involved with operating in a vacuum environment, simulations of a terahertz pulse coupling to an STM tip, and progress towards atomic resolution with THz-STM will be discussed.

Primary author: JELIC, Vedran (University of Alberta) Co-authors: Mr RATHJE, Christopher (University of Göttingen); Prof. ROPERS, Claus (University of Göttingen); Prof. HEGMANN, Frank (University of Alberta); Mr HORNIG, Graham (University of Al- berta); Ms SHARUM, Haille (University of Alberta); Mr HOFFMAN, James (University of Alberta); Prof. IWASZCZUK, Krzysztof (Technical University of Denmark); Prof. FREEMAN, Mark (University of Al- berta); Mr NGUYEN, Peter (University of Alberta) Presenter: JELIC, Vedran (University of Alberta) Session Classification: W2-7 Terahertz Science and Applications (DAMOPC) / Sciences et applications des Terahertz (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 13 2016 CAP Congr … / Report of Contributions Constraints on the spectrum of W …

Contribution ID: 992 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Constraints on the spectrum of W algebras Monday, 13 June 2016 17:00 (15 minutes)

A conformal field theory is a quantum field theory whose symmetries are extended fromthe Lorentz group to the conformal group, thus putting more constraints on the theory than what we normally have in regular quantum field theory. In 2 dimensions, the conformal symmetries are infinite dimensional so it is easier to characterize the properties of 2d CFTs than it is in higherdi- mensions. Extensions of these symmetry algebras that include higher spin generators in addition to the energy-momentum tensor have been built a long time ago and they have found applications in string theory, statistical mechanics and holography. In this talk I will discuss a way of constraining the spectrum of operators in unitary representations of these so called W algebras. In particular, I will study the W(2,4) algebra, which has an extra spin 4 generator, and I will search for representations with negative norm states. This will give various new constraints on the scaling dimensions and charges of the states in the theory. This kind of results can be translated to higher spin theories of gravity using the AdS/CFT correspondence and give new insights on the allowed theories.

Primary authors: MALONEY, Alexander (McGill University); TSIARES, Ioannis (McGill Univer- sity); GOBEIL, Yan (McGill University) Presenter: GOBEIL, Yan (McGill University) Session Classification: M3-3 Fields and Strings (DTP) / Champs et cordes (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 14 2016 CAP Congr … / Report of Contributions Can learning about History of Scie …

Contribution ID: 993 Type: Oral (Non-Student) / orale (non-étudiant)

Can learning about History of Science and Nature of Science in a student-centred classroom change science students’ conception of science? Wednesday, 15 June 2016 15:30 (30 minutes)

Learning about the Nature of Science (NOS) and the History of Science (HOS) has been shown to be highly beneficial to both the study and the practice of science. In particular, students’ conception of science can be improved by including NOS and HOS in the curriculum. However, teaching of NOS and HOS is not always effective: simplistic or erroneous conceptions of science sometimes persist. Innovative, student-centered teaching methods may circumvent this problem. That is why a course focused on NOS and HOS taught using two innovative pedagogical methods is offered as part of a multidisciplinary minor in Science, at Concordia University. The present study aims to investigate the changes in conception of science experienced by students in this course. In-depth interviews with eight students and in-class observation were carried out throughout the semester, and written products of students’ reflection on NOS and HOS was analyzed using a rubric from previous research. Results indicate that students react positively to this form of teaching NOS and HOS. In addition, all interviewed students report having developed a more elaborate and more nuanced conception of science.

Primary author: Mr ROUCAU, Baptiste (Concordia University) Co-author: KALMAN, Calvin (Concordia University) Presenter: KALMAN, Calvin (Concordia University) Session Classification: W3-2 Teaching Physics to a Wider Audience (DPE) / Enseigner la physique à un auditoire plus vaste (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 15 2016 CAP Congr … / Report of Contributions Generation of nonclassical states o …

Contribution ID: 994 Type: Invited Speaker / Conférencier invité

Generation of nonclassical states of light using photonic crystal fibers Tuesday, 14 June 2016 13:15 (30 minutes)

Photonic crystal fibers (PCF) offer unique control of dispersion and nonlinearity and have revolutionized nonlinear optics. We present the possibility to use hollow-core and solid-core PCF for the generation of bright twin beams and photon triplet states. One advantage to use optical fibers is that both signal and idler can be generated in a single spatial mode. By pumping close to the zero dispersion wavelength of the fiber, such sidebands can be created through modulation instability. However, signal and idler appear in the vicinity of the pump and Raman-scattering originated from the pump deteriorates the photon correlation by increasing the background level of photons of the idler. Here we use kagomé-lattice hollow-core PCF filled with argon to generate ultrafast bright twin beams [M.A. Finger et al. PRL. 115, 143602 (2015)]. Since a monatomic gas provides the nonlinearity the source does not suffer from Raman-scattering and sidebands close to the pump are generated. We measure ~35% twin beam squeezing below shot noise. Another unique advantage of this source is the tunability of the sidebands through the gas- filling pressure. Next, we address the challenging problem of generation of triplet states through spontaneous decay of one pump photon propagating in a χ(3)-material. This process is the reverse of third harmonic generation and phase-matching conditions are identical. Due to chromatic dispersion phase-matching cannot occur between two identical modes and this implies for the generation of triplet that the pump light has to be launched in a higher-order mode, leading to a reduced generation efficiency due to mode-mismatch between pump and triplets. Here we propose ahybrid solid-core PCF to circumvent this difficulty. The short-wavelength (~532 nm) is guided in a single- lobe mode by an all-solid photonic bandgap (PBG) while the guidance of the long-wavelengths relies on step-index. The inner PBG consists of a hexagonal array of high-refractive index glass (Schott SF6, n=1.81) embedded in a lower index host (Schott LLF1, n=1.55). The overall dispersion is strongly affected by these two distinct mechanisms and we demonstrated phase-matched third harmonic from fundamental mode at 1521 nm into the “fundamental” bandgap-guided mode (λ=507 nm), for which the field distribution is very similar to that of the LP01 mode of a step-index but with narrower mode-field diameter [A. Cavanna et al., in preparation].

Primary author: Prof. JOLY, Nicolas (Max-Planck Institute for the Science of Light) Co-authors: Mr CAVANNA,Andrea (University of Erlangen-Nuremberg); Mr JUST, Felix (University of Erlangen-Nuremberg); Dr CHEKHOVA, Maria (Max-Planck Institute for the Science of Light); Mr FINGER, Martin (Max-Planck Institute for the Science of Light); Prof. RUSSELL, Philip (Max-Planck Institute for the Science of Light); Dr ISKHAKOV, Timur (University of Erlangen-Nuremberg); Dr JIANG, Xin (Max-Planck Institute for the Science of Light)

Presenter: Prof. JOLY, Nicolas (Max-Planck Institute for the Science of Light) Session Classification: T2-5 Photonics I: Applications (DAMOPC-DPP) / Photonique I : applications (DPAMPC-DPP)

September 29, 2021 Page 16 2016 CAP Congr … / Report of Contributions Generation of nonclassical states o …

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 17 2016 CAP Congr … / Report of Contributions Gravitationally induced quantum t …

Contribution ID: 995 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Gravitationally induced quantum transitions Tuesday, 14 June 2016 19:00 (2 minutes)

Abstract 1. Introduction 2. ULTRA-COLD NEUTRONS IN A GRAVITATIONAL FIELD 3. GRAVITATIONAL PERTURBATION 4. NUMERICAL VALUES AND EXPERIMENTAL POSSIBILITIES 5. Conclusion 6. Acknowledgements 7. References

Primary authors: Mr LANDRY, Alexandre (Université de Montréal); PARANJAPE, Manu B. (Uni- versité de Montréal)

Presenter: Mr LANDRY, Alexandre (Université de Montréal) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 18 2016 CAP Congr … / Report of Contributions Search for direct top squark pair p …

Contribution ID: 996 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Search for direct top squark pair production in events with two tau leptons with the ATLAS detector Wednesday, 15 June 2016 09:30 (15 minutes)

A search for direct pair production of the supersymmetric partner of the top quark in events√ with two tau leptons has been performed using proton-proton collision data. The 20 fb−1 of s = 8 TeV data were collected in 2012 by the ATLAS experiment at the LHC. The search is optimised for a model where both top squarks decay via a scalar tau to a nearly massless gravitino. No significant excesses from the Standard Model expectations are found. Exclusion limits at the 95% confidence level are set as a function of the top squark and scalar tau masses. Depending on the scalar tau mass, lower limits between 490 GeV and 650 GeV are placed on the top squark mass within the model considered.

Primary author: HILL, Ewan Chin (University of Victoria (CA)) Co-authors: KOWALEWSKI, Bob (University of Victoria (CA)); TRIGGER, Isabel (TRIUMF (CA))

Presenter: HILL, Ewan Chin (University of Victoria (CA)) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 19 2016 CAP Congr … / Report of Contributions Plasmonic colouring of noble meta …

Contribution ID: 997 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Plasmonic colouring of noble metals via picosecond laser pulses Tuesday, 14 June 2016 17:00 (15 minutes)

We report the creation of angle independent colors on silver due to plasmonic effects arising from random nanoparticle distributions induced by picosecond laser exposure. The color is determined by the total accumulated fluence on the surface. This is valid for all combinations of laserparam- eters producing the same total accumulated fluence. Both spectral and extra-spectral colors can be obtained. Finite-difference time-domain computations carried out on a high-performance computing system identify the role of each geometrical parameter leading to understanding of color formation. Absorptive plasmonic resonances in heterogeneous nanoclusters are found to be key in the color formation. We also simultaneously report the angle-independent coloring of pure gold with colors covering the entire spectral and extra-spectral region. To our knowledge this represents a world first in the laser coloring of metals.

Primary author: GUAY, Jean-Michel (University of Ottawa) Co-authors: Dr CALÀ LESINA, Antonino (University of Ottawa); Dr WECK, Arnaud (University of Ottawa); Mr COTE, Guillaume (University of Ottawa); Dr RAMUNNO, Lora (University of Ottawa); Mr CHARRON, Martin (University of Ottawa); Dr BERINI, Pierre (University of Ottawa) Presenter: GUAY, Jean-Michel (University of Ottawa) Session Classification: T3-8 Thin Films I (DSS-DCMMP) / Couches minces I (DSS-DPMCM)

Track Classification: Surface Science / Science des surfaces (DSS)

September 29, 2021 Page 20 2016 CAP Congr … / Report of Contributions Quantum tunneling of Fermions fr …

Contribution ID: 998 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Quantum tunneling of Fermions from Black Strings Monday, 13 June 2016 16:45 (15 minutes)

In this work I would like to give semi-classical derivation of Hawking temperature from cylin- dricaly symmetric charged rotating black strings. I will use Hamilton Jacobi method and WKB approximation to get analytic expression for Hawking temperature of fermions tunneling from charged black strings.

Primary author: Mr AHMED, Jamil (Quaid-i-Azam University, Islamabad) Co-author: Dr SAIFULLAH, Khalid (Quaid-i-Azam University, Islamabad) Presenter: Mr AHMED, Jamil (Quaid-i-Azam University, Islamabad) Session Classification: M3-3 Fields and Strings (DTP) / Champs et cordes (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 21 2016 CAP Congr … / Report of Contributions New room-temperature multiferro …

Contribution ID: 999 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

New room-temperature multiferroic thin films of Ba2LnFeNb4O15 (Ln = Eu and Sm) deposited by pulsed laser deposition Tuesday, 14 June 2016 19:50 (2 minutes)

The study of Ba2LnFeNb4O15 (TTB-Ln) bulk ceramics revealed that they have a tetragonal tungsten bronze crystal structure, are ferroelectric and that a magnetic phase of barium hexaferrite BaFe12O19 (BaFO) spontaneously forms within the TTB-Ln phase during the ceramic processing, resulting in a novel multiferroic composite material at room temperature. Our goal is to investigate new room-temperature multiferroic thin films grown by pulsed laser deposition (PLD), namely thin films of the spontaneously forming composite BaFO/TTB-Ln (Ln = Eu and Sm). c-oriented thin films of TTB-Ln have been successfully grown on Nb doped Sr- TiO3(100) substrates by PLD. In specific and optimized growth conditions, the structural study of the BaFO/TTB-Ln thin films shows an epitaxial growth perpendicularly to the substrate planand parallel to the c-axis of tetragonal crystal structure. Further structural analysis reveals two kinds of azimuthal orientation of the c-axis oriented grains of TTB-Ln onto the cubic substrate, with the a and b axes of TTB-Ln aligned at 18° with respect to the a-axis of the cubic substrate. Ferro- electric macroscopic hysteresis loops demonstrate the existence of a spontaneous polarization at room temperature. An enhancement of the ferroelectricity due to the epitaxial growth has been evidenced. To further study the ferroelectricity in TTB-Ln thin films, local electromechanical properties were studied using piezoelectric force microscopy. These experiments allowed determining the piezoelectric coefficient and confirming that the ferroelectric nature of the studied thinfilms is conserved down to the nanoscale. Finally, the magnetic properties of BaFO/TTB-Ln thin films were studied which reveals that the PLD grown BaFO/TTB-Ln composite films exhibit a ferromag- netic behavior at room temperature, confirming their multiferroic nature at room temperature.

Primary author: Mr HAJLAOUI, Thameur (INSTITUT NATIONAL DE LA RECHERCHE SCIEN- TIFIQUE (INRS))

Co-authors: Prof. PIGNOLET, Alain (INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE (INRS)); Dr JOSSE, Michael (Université de Bordeaux, ICMCB) Presenter: Mr HAJLAOUI, Thameur (INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE (INRS)) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 22 2016 CAP Congr … / Report of Contributions Enrico Fermi’s group at La Sapien …

Contribution ID: 1000 Type: Invited Speaker / Conférencier invité

Enrico Fermi’s group at La Sapienza included Franco Rasetti : de Rome à Québec ce Rasetti fondele département de physique il y a 75 ans Wednesday, 15 June 2016 09:00 (30 minutes)

Il a fallu qu’un chimiste décide de ne plus enseigner la physique pour que les autorités de l’Université Laval acceptent d’engager un physicien de renom afin de fonder le département de physique. On est en 1939. C‘est Franco Rasetti qui est engagé ; il arrive en septembre 1939 et le département démarra l’année suivante. Le nouveau directeur met sur pied un réel programme de formation en physique, mais les premières années sont difficiles. The first graduation took place in 1944. Three graduate students were in place : HaroldFeeney coming from McGill, Paul Koenig and Larkin Kerwin from MIT. Kerwin will develop the atomic physics locally and optics and nuclear physics will be established by Albéric Boivin and Claude Geoffrion respectively, two former students from Laval. Rasetti left Laval in 1947 toacceptan offer from Johns Hopkins University, Enrico Persico took over for less than 3 years and Koenig, Geoffrion, Kerwin, etc. will follow as chairs… À la fin des années 50 s’est préparé le grand déménagement de toute la faculté des sciencesetde génie pour aménager sur le campus actuel dans des locaux nouveaux et luxueux où les activités de recherche ont réellement pu prendre leur envol, surtout dans les secteurs de l’optique, de la physique atomique et de la physique nucléaire. Ce n’est qu’en 1976 que l’on verra débuter les ac- tivités en astrophysique. Dans la présentation, on revivra les moments forts des premières 75 années du département. De- tails of particular events will be remembered…

Primary author: ROY, René (Université Laval) Presenter: ROY, René (Université Laval) Session Classification: W1-7 History of Physics (DHP) / Histoire de la physique (DHP)

Track Classification: History of Physics / Histoire de la physique (DHP)

September 29, 2021 Page 23 2016 CAP Congr … / Report of Contributions Le physicien et le génie des matéri …

Contribution ID: 1001 Type: Invited Speaker / Conférencier invité

Le physicien et le génie des matériaux - Physicists in Materials Engineering Tuesday, 14 June 2016 16:45 (30 minutes)

The strong basic training of physicists allows them to grasp important scientific and technological issues encountered in materials engineering. Physicists have an understanding of the fundamental mechanisms that govern the behavior and properties of materials while processing and using them in various applications. This understanding enables them to contribute effectively inmulti- disciplinary R&D teams by bringing a different perspective to their fellow engineers. In this presentation, we will see a series of practical examples of career opportunities facing physicists in the manufacturing industry, national laboratories and engineering departments. Several examples will be drawn from my career conducted in close interaction with Canadian industry over the past 35 years.

La formation de base du physicien lui permet de saisir des enjeux scientifiques et technologiques importants rencontrés en génie des matériaux. Il a une compréhension des mécanismes fonda- mentaux qui régissent le comportement et les propriétés des matériaux lors de leur mise en forme et lors de leur utilisation. Cette compréhension lui permet de contribuer de façon efficace àdes équipes multidisciplinaires de recherche et développement en amenant une perspective différente de ses collègues ingénieurs. Dans cette présentation, nous verrons un ensemble d’exemples illustrant de façon pratique les possibilités de carrière du physicien tant au sein de l’industrie manufacturière, de laboratoires nationaux ou de départements de génie. Plusieurs exemples seront tirés de mon parcours professionnel mené en étroite interaction avec l’industrie canadienne au cours des 35 dernières années.

Primary author: Prof. MOREAU, Christian (Université Concordia) Presenter: Prof. MOREAU, Christian (Université Concordia) Session Classification: T3-7 Applied Physics in Non-Academic Environment (DIAP-DIMP) / La physique hors université (DPIA-DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 24 2016 CAP Congr … / Report of Contributions Optique pour téléphone cellulaire : …

Contribution ID: 1002 Type: Invited Speaker / Conférencier invité

Optique pour téléphone cellulaire : Pouvons-nous miniaturiser davantage? - Consumer electronic optics : How small a lens can be? Wednesday, 15 June 2016 15:15 (30 minutes)

En 2016, on trouve des modules de caméra miniature dans une variété de produits, comme les webcams, les cellulaires, le véhicules, les endoscopes, les tablettes, les ordinateurs portables et bien d’autres. Les caméras de téléphones cellulaires présentent peut-être les plus grands défis puisque le marché exige des dispositifs toujours plus minces et des algorithmes intégrés de traitement d’image optimisés. À mesure que la technologie évolue, pour répondre aux besoins du marché, de nouvelles capacités devront être développées pour atteindre une meilleure résolution et une meilleure qualité d’image. Par conséquent, le système de lentilles deviendra plus complexe et comprendra plus d’éléments optiques et/ou de nouveaux éléments optiques. Y a-t-il une limite? Nous aborderons le sujet du point de vue des contraintes de fabrication et aussi de la limite théorique des principes de physique derrière la conception de lentille de si faibles dimensions.

In 2016, miniature camera modules can be found in a variety of products such as webcams, mobile phones, vehicles, endoscopes, tablets, portable computers and many others. Mobile phone cameras are probably one of the most challenging because of the requirement for ever smaller total track length (TTL) and optimized embedded image processing algorithms. As the technology is developing, new capabilities in terms of higher resolution and higher image quality are required to fulfil market needs. Consequently, the lens system becomes more complex and requires more optical elements and/or new optical elements. What is the limit? We will discuss this topic in terms of manufacturing constraints but also in terms of the theoretical limit of the physics behind the lens design of such miniature optical components

Primary author: Dr THIBAULT, Simon (Université Laval) Presenter: Dr THIBAULT, Simon (Université Laval) Session Classification: W3-4 Technical Exploits (DIAP-DIMP) / Prouesses techniques (DPIA- DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 25 2016 CAP Congr … / Report of Contributions Working in an applied R&D center …

Contribution ID: 1003 Type: Invited Speaker / Conférencier invité

Working in an applied R&D center : INO as an example Tuesday, 14 June 2016 16:15 (30 minutes)

INO is an innovation house, it is home to the largest concentration of skill in the applied optics/photonics field and serves clients of all sizes from all parts of Canada and around theworld. INO offers a complete range of integrated services to clients of all descriptions in everyfieldof industrial activity. It also possesses a variety of technologies and innovative processes based on a strong IP portfolio. These assets represent unique business opportunities for companies wishing to commercialize them. Innovation is a key word nowadays and requires a good balance between cre- ativity and realism. Being a physicist in a non-academic environment is an interesting challenge. Both the organization and the researcher point-of-view will be presented.

Primary author: Dr GALARNEAU, Pierre (INO, Québec) Co-author: Dr BOLDUC, Martin (INO, Québec) Presenters: Dr BOLDUC, Martin (INO, Québec); Dr GALARNEAU, Pierre (INO, Québec) Session Classification: T3-7 Applied Physics in Non-Academic Environment (DIAP-DIMP) / La physique hors université (DPIA-DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 26 2016 CAP Congr … / Report of Contributions Improved techniques for monitori …

Contribution ID: 1005 Type: Oral (Non-Student) / orale (non-étudiant)

Improved techniques for monitoring and investigating polar cap absorption Wednesday, 15 June 2016 13:45 (15 minutes)

Shock waves produced in front of coronal mass ejections can accelerate solar energetic protons Earthward where they are guided by the Earth’s magnetic field into the high-latitude polar cap region. Energetic >10 MeV protons can penetrate into the ionosphere increasing ionization in the D-region causing a polar cap absorption (PCA) event potentially blocking out high frequency (HF) radio communications at high latitudes. This is of direct importance to the safety of transpo- lar flights which communicate using the affected radio signals. Riometer instruments areableto monitor variations in ionospheric absorption by observing background cosmic radio noise. This presentation introduces the development of a new two-dimensional visualization tool for viewing riometer-derived absorption on a Canada-wide scale. Such a visualization tool will greatly enhance the monitoring and investigation of ionospheric effects on HF radio communication allowing system operators to optimize system performance thereby contributing to the reduction of economic losses during PCA events.

Primary author: Dr FIORI, Robyn (Natural Resources Canada) Co-author: Dr DANSKIN, Donald (Natural Resources Canada) Presenter: Dr FIORI, Robyn (Natural Resources Canada) Session Classification: W2-3 Remote Sensing (DASP) / Détection à distance (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 27 2016 CAP Congr … / Report of Contributions Spins and photons: quantum optic …

Contribution ID: 1006 Type: Invited Speaker / Conférencier invité

Spins and photons: quantum optics with defect centers in diamond Tuesday, 14 June 2016 16:15 (30 minutes)

Individual defects in crystalline materials can have electronic properties akin to those of isolated trapped atoms or ions. Recently, the nitrogen vacancy center, a type of defect in diamond, has emerged as as a particularly compelling example. Like atoms, these defect centers have spin degrees of freedom and and optical transitions that make them an attractive platform for building quantum information technologies. Their spin states might someday be used to store and manipulate quantum information, with photons connecting individual defects into a useful computational network or secure communication system. This talk will introduce the properties of nitrogen-vacancy defect centers relevant to such a vision, and present some recent results on the path toward creating a high-efficiency spin-photon interface using fiber-based optical microcavi- ties.

Primary author: CHILDRESS, Lilian (McGill University) Co-authors: JANITZ, Erika (McGill University); SANKEY, Jack (McGill University); Mr DIMOCK, Mark (McGill University); Dr FONTANA, Yannik (McGill University) Presenter: CHILDRESS, Lilian (McGill University) Session Classification: T3-3 Quantum Computing and Coherent Control (DAMOPC) /Cal- cul quantique et contrôle cohérent (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 28 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Optical atomic …

Contribution ID: 1007 Type: Invited Speaker / Conférencier invité

**WITHDRAWN** Optical atomic clocks for gravitational wave physics Monday, 13 June 2016 10:30 (30 minutes)

Gravitational wave (GW) astronomy has entered a new era with the direct detection of dekahertz- band GW signals by laser interferometers. As with the electromagnetic spectrum, observing gravitational waves in a range of different frequency bands will yield complementary insights intothe astrophysics of gravitating objects. Gravitational waves at micro-hertz to milli-hertz frequencies can be detected using an array of optical atomic clocks on satellites, by leveraging the extreme precision available with these clocks. This method affords a technologically feasible approach to imaging the universe in a novel GW band. To enable this method, we are developing optical atomic clocks for use on board satellites, using a simplified scheme based on two-photon transitions. In this talk, I will describe the method of GW detection using optical atomic clocks, and present our progress towards building a portable clock.

Primary author: Dr VUTHA, Amar (University of Toronto) Presenter: Dr VUTHA, Amar (University of Toronto) Session Classification: M1-7 Atomic and Molecular Spectroscopy and Precision Measure- ments I (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision I (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 29 2016 CAP Congr … / Report of Contributions MicPIC perspectives on light- …

Contribution ID: 1008 Type: Invited Speaker / Conférencier invité

MicPIC perspectives on light-matter interactions in strongly-coupled systems Monday, 13 June 2016 10:30 (30 minutes)

A key challenge in modelling laser-driven strongly-coupled plasmas is to properly resolve both microscopic and macroscopic phenomena. Atomic collision processes require angstrom spatial resolution, whereas the macroscopic length scale is determined by the wavelength of the incident light. For example, modelling the complete dynamics of a near-infrared laser pulse driving a solid- density plasma requires to resolve about four orders of magnitude in space (from angstrom to micron) and to trace about 1010 classical particles, in combination with radiation and laser propagation. In this talk, I present an overview of the microscopic particle-in-cell (MicPIC) approach whose parallel implementation, designed for large-scale distributed computations, can fulfill all of these demands. Parallel MicPIC is an important step toward a better understanding of the links between the atomic-scale origin of optical phenomena and their observable manifestations. Our ultimate goal is to bring a complete description of light-matter interactions in strongly-coupled systems that includes all the relevant physics, from atomic dynamics to wavelength-scale phenomena, like scattering and diffraction.

Primary author: VARIN, Charles (University of Ottawa) Co-authors: Dr PELTZ, Christian (University of Rostock); Mr BART, Graeme (University of Ot- tawa); Prof. BRABEC, Thomas (University of Ottawa); Prof. FENNEL, Thomas (University of Ros- tock)

Presenter: VARIN, Charles (University of Ottawa) Session Classification: M1-6 Laser-Plasma Interactions (DPP-DAMOPC) / Interactions laser- plasmas (DPP-DPAMPC)

Track Classification: Plasma Physics / Physique des plasmas (DPP)

September 29, 2021 Page 30 2016 CAP Congr … / Report of Contributions Non stick coatings from thin air

Contribution ID: 1009 Type: Invited Speaker / Conférencier invité

Non stick coatings from thin air Wednesday, 15 June 2016 15:45 (30 minutes)

Non stick coatings are everywhere in nature and these have stimulated numerous applications in industry. For example leaf surfaces have been the inspiration for novel waterproof textile coatings. Insect wings may hold the key to strategies for antifouling on marine vessels and the associated energy savings that go hand in hand with such developments. The latest “green” nanotechnology approach to fabricating extremely non-stick surfaces involves self-organized and chemically cross linked nanoparticles. These generate exceptionally rough multi scale hierarchical (ultra rough) interfaces that simultaneously possess a unique ability to self-clean. But what is behind such an effect? Why does a lotus leaf stay clean in nature but when freshly cut it rapidly contaminates? Rinsing inert “dirt” from textiles is enhanced if the surface has multi scale roughness yet biological (live) contaminants “sense” subtle nanoscale features and may “hold on” despite such washing. This talk will discuss investigation of immersed interfaces using synchrotron X ray scattering and phase contract imaging at Australian and Canadian Lightsources respectively. Results suggest that ultra rough surfaces that are visibly soaked are not necessarily completely wet and this can have major implications with respect to optimizing, for instance, antifouling behavior. It all about what is trapped in the interface.

Similarly, fine tuning bulk mixtures of nanoparticle cluster sizes and variable surface architectures can have a major impact on film optical properties and not surprisingly non stick surface properties.

Primary author: LAMB, Robert (Canadian Light Source Inc.) Presenter: LAMB, Robert (Canadian Light Source Inc.) Session Classification: W3-4 Technical Exploits (DIAP-DIMP) / Prouesses techniques (DPIA- DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 31 2016 CAP Congr … / Report of Contributions The Empirical Canadian High Arc …

Contribution ID: 1010 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The Empirical Canadian High Arctic Ionospheric Model (E-CHAIM): NmF2 and hmF2 specification Monday, 13 June 2016 13:45 (15 minutes)

It is well known that the IRI suffers reduced accuracy in its representation of monthly median ionospheric variability at high latitudes (Themens et al. 2014, Themens et al. 2016). These inaccuracies are believed to stem from a historical lack of data from these regions. Now, roughly thirty and forty years after the development of the original URSI and CCIR foF2 maps, respectively, thereex- ists a much larger dataset of high latitude observations of ionospheric electron density. These new measurements come in the form of new ionosonde deployments, such as those of the Canadian High Arctic Ionospheric Network, the CHAMP, GRACE, and COSMIC radio occultation missions, and the construction of the Poker Flat, Resolute, and EISCAT Incoherent Scatter Radars systems. These new datasets afford an opportunity to revise the IRI’s representation of the highlatitude ionosphere. For this purpose, we here introduce the Empirical Canadian High Arctic Ionospheric Model (E-CHAIM), which will incorporate all of the above datasets, as well as the older observation records, into a new climatological representation of the high latitude ionosphere. In this presentation, we introduce the NmF2 and hmF2 portions of the model and present a validation of the new model with respect to ionosonde observations in Alert, Canada. A comparison with respect to IRI performance will also be presented.

Primary author: THEMENS, David (University of New Brunswick) Co-author: THAYYIL, Jayachandran (University of New Brunswick) Presenter: THEMENS, David (University of New Brunswick) Session Classification: M2-6 Theory, Modelling, and Forecasting II (DASP) / Théorie, mod- élisation et prévisions II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 32 2016 CAP Congr … / Report of Contributions Detection of C2H2 at a concentrat …

Contribution ID: 1011 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Detection of C2H2 at a concentration of ppmv levels using a fiber laser system Thursday, 16 June 2016 09:00 (15 minutes)

A gas sensor based on optical fiber technology is in demand for applications in environmental monitoring. Authors will present an acetylene (C2H2) gas sensor which was developed using the principle of intracavity laser absorption spectroscopy operating at room temperature. An intracavity gas cell based on hollow core photonic crystal fiber was developed and used inside a fiber ring laser cavity. Authors will present the details of the construction of the gas cell and the advantages of using a gas cell based on photonic crystal fiber in comparison to the existing cells reported in the literature. The laser wavelength was selected by a fiber Bragg grating (FBG) withapeak wavelength close to one of the absorption lines of the acetylene gas in the 1.55 micron band. The system was capable of detecting acetylene gas in concentrations of ~ 10 ppmv. It is possible to operate the system to detect other gases such as CH4 by changing the FBG in the cavity or using a tunable FBG.

The research was financially supported by Natural Sciences and Engineering Research Councilof Canada (NSERC) and Agrium Inc.

Primary author: VALIUNAS, Jonas (Lakehead University) Co-author: DAS, Gautam (Lakehead Uniersity) Presenter: VALIUNAS, Jonas (Lakehead University) Session Classification: R1-5 Photonics II: Optoelectronics and Devices (DAMOPC-DCMMP) / Photonique II : optoélectronique et dispositifs (DPAMPC-DPMCM)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 33 2016 CAP Congr … / Report of Contributions New Observation of the Polar Win …

Contribution ID: 1012 Type: Oral (Non-Student) / orale (non-étudiant)

New Observation of the Polar Wind in the Topside Ionosphere Tuesday, 14 June 2016 16:15 (15 minutes)

The theoretical prediction of the “classical” polar wind dates back to the works of Banksetal., Lemaire et al., Marubashi, Nishida, and other authors in the late sixties and early seventies. Since then, direct in-situ observations of the polar wind have been made on a number of satellites above the topside ionosphere, notably ISIS-2, Akebono, and DE-1, at altitudes of 1400–50,000 km. In this paper, we present the first in-situ observation of the polar wind inside the topside ionosphere on the Enhanced Polar Outflow Probe (e-POP) down to 600 km, and we compare our low-altitude observation with earlier observations at higher altitudes as well as theoretical predictions.

Primary author: YAU, Andrew (University of Calgary) Co-author: Mr HOWARTH, Andrew (University of Calgary) Presenter: YAU, Andrew (University of Calgary) Session Classification: T3-9 Atmospheric and Space Physics (DASP) / Physique atmosphérique et de l’espace II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 34 2016 CAP Congr … / Report of Contributions Fiber lasers: Detection of gases an …

Contribution ID: 1013 Type: Invited Speaker / Conférencier invité

Fiber lasers: Detection of gases and chemicals Thursday, 16 June 2016 08:30 (30 minutes)

Fiber lasers operating either in the CW or PULSED mode are established as robust and reliable devices. They have wide applications in industry and medicine because of their unique characteristics such as an all-fiber design, compact size, cost-effective production and operation, andlack of need for re-alignment and external cooling. A fiber laser emitting single-longitudinal-mode, single-wavelength or multi-wavelength output in the infrared region of the electromagnetic spectrum is attractive for applications in optical communication, sensing, spectroscopy and nonlinear optics. Trace-gas sensing is a rapidly growing field. It has applications in breath diagnostics, environmental monitoring, and homeland security. Several methods and devices are commercially available for the identification and quantification of trace gases. Most of the commonly used devices are based on gas chromatography (GC) coupled with mass spectroscopy (MS). Laser spectroscopy is an alternative to the GC/MS methods. Laser spectroscopy is based on the light-absorbing property of a chemical and can detect a compound in real time with very high sensitivity. The author has developed a new technique, based on a CW fiber laser, for the detection of trace gases. In the talk, the author will present the details of the gas detection system and its unique features. Further, detecting a single molecule of a substance (e.g. the protein responsible for cancer) is a real challenge using existing devices, most of which are also very expensive. A system based on fiber lasers will be efficient and cost-effective. The author will also present the details of achemical sensor based on SERS (Surface Enhanced Raman Spectroscopy).

This work was supported by Natural Sciences and Engineering Research Council of Canada (NSERC), Canada Foundation for Innovation (CFI) and Agrium Inc.

Primary author: Dr DAS, Gautam (Lakehead University) Presenter: Dr DAS, Gautam (Lakehead University) Session Classification: R1-5 Photonics II: Optoelectronics and Devices (DAMOPC-DCMMP) / Photonique II : optoélectronique et dispositifs (DPAMPC-DPMCM)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 35 2016 CAP Congr … / Report of Contributions Investigation of effect of ball milli …

Contribution ID: 1014 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Investigation of effect of ball milling on hydrogen storage properties of 52Ti-12V-36Cr. Tuesday, 14 June 2016 19:30 (2 minutes)

Hydrogen is a promising renewable energy vector that could be used in chemistry or to produce electricity via a fuel cell. Hydrogen can be stored in various forms such as gaseous, liquid, and metal hydrides. Metal hydrides are particularly attractive because of their low operation pressure and high volumetric capacities. In this communication we report the effect of ball milling on the hydrogen storage properties of a titanium based alloy having a body centred cubic (BCC) crystal structure. It is known that Ti-V-Cr based BCC solid solutions alloys are performing well at room temperature and atmospheric pressure. But one problem is the slow first hydrogenation. However, the first hydrogenation can be improved by high energy ball milling. In the present investigation, a BCC alloy of composition 52Ti-12V-36Cr was synthesized by arc melting and afterward subjected to high energy milling for various durations (15 min, 30 min, 1 hr, 2 hrs, 5 hrs, 10 hrs, and 20 hrs). The microstructure was studied by scanning electron microscopy (SEM) and composition ofthe various phases measured by Energy-dispersive X-ray spectroscopy (EDX). The crystal structure was investigated by X-ray diffraction. The activation and hydrogen storage properties weremea- sured using a homemade hydrogen titration system. The correlation between milling time and hydrogen storage properties will be reported.

Primary author: Mr KAMBLE, Amol (Queen Elizabeth Scholar, UQTR) Presenter: Mr KAMBLE, Amol (Queen Elizabeth Scholar, UQTR) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 36 2016 CAP Congr … / Report of Contributions On-chip evaluation and manipulat …

Contribution ID: 1015 Type: Oral (Non-Student) / orale (non-étudiant)

On-chip evaluation and manipulation of directed cell migration Wednesday, 15 June 2016 13:15 (15 minutes)

Directed cell migration is a complex cellular function that critically mediates a broad range of physiological and pathological processes. Chemical concentration gradient and electric field are two important guidance cues for many cell types such as immune cells, metastatic cancer cells, adult stem cells and neurons. Microfluidic devices can precisely configure cellular microenvironments and therefore have been increasingly employed to investigate the mechanism of directed cell migration and to manipulate migratory cells. In this short talk, I will briefly discuss our recent work in on-chip evaluation and manipulation of cell migration in response to chemical and electrical cues including 1) application of microfluidic systems for studying the molecular mechanisms of chemotaxis; 2) development of an all-on-chip method for rapid chemotaxis analysis; 3) microfluidic selection of therapeutic stem cells; 4) on-chip characterizations of immune-cancer cell migratory interactions.

Primary author: Prof. LIN, Francis (University of Manitoba) Co-authors: Prof. MARSHALL, Aaron (University of Manitoba); Dr TIAN, Ganghong (National Research Council of Canada); Dr PERETZ-SOROKA, Hagit (University of Manitoba); Mr WU, Jiandong (University of Manitoba); Ms NATARAJAN, Kanmani (University of Manitoba); Dr SANTOS, Susy (South Winnipeg Integrated Health & Social Services); Prof. CUI, Xueling (Jilin University & University of Manitoba); Ms WU, Xun (University of Manitoba) Presenter: Prof. LIN, Francis (University of Manitoba) Session Classification: W2-1 Biomechanics and Fluid Dynamics (DPMB) / Biomécanique et dynamique des fluides (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 37 2016 CAP Congr … / Report of Contributions Intense Terahertz Sources and the …

Contribution ID: 1016 Type: Invited Speaker / Conférencier invité

Intense Terahertz Sources and their Applications at the Advanced Laser Light Source Wednesday, 15 June 2016 14:15 (30 minutes)

Tabletop sources of high-field terahertz (THz) pulses are currently a hot topic, which isbeing pursued by many groups around the world. While the favourite method for intense THz generation is optical rectification in nonlinear crystals, research on using other novel methods haveshown promising results, including those using air-plasmas, relativistic laser-solid interactions, and large aperture photoconductive antennas. At the Canadian Advanced Laser Light Source, we have built an array of intense THz sources with different central frequencies, with peak THz electric fields ranging from few 100 kV/cm to few MV/cm. In parallel, we have used these sources to study the nonlinear THz response of various materials. In this talk, I will first quickly review the various components of the “intense THz rainbow” atALLS. I will then describe more in detail our recent results on intense THz sources based on relativistic laser-solid interactions, and the use of nanorod targets to increase the THz conversion efficiency by 28 times. This provides us with an excellent opportunity for multi-mJ THz sources, which when focused could reach peak intensities of 1014W cm−2. Finally, I will present our recent results on the nonlinear THz spectroscopy of monolayer graphene. By using gated graphene samples to control their Fermi level energy, we show that their nonlinear response in the THz regime changes drastically when the Fermi level is at or away from the charge neutral point. Comparison with simulations reveals the mechanism involved in such changes.

Primary author: OZAKI, Tsuneyuki (INRS-EMT) Presenter: OZAKI, Tsuneyuki (INRS-EMT) Session Classification: W2-7 Terahertz Science and Applications (DAMOPC) / Sciences et applications des Terahertz (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 38 2016 CAP Congr … / Report of Contributions Epitaxially stabilized thin films of …

Contribution ID: 1017 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Epitaxially stabilized thin films of the potentially multiferroic materials ε-Fe2O3 and ε-AlxFe2-xO3. Tuesday, 14 June 2016 16:15 (15 minutes)

ε-Fe2O3 is a metastable intermediate phase of iron (III) oxide, between maghemite (γ-Fe2O3) and hematite (α-Fe2O3). Epsilon ferrite has been investigated essentially because of its ferrimagnetic ordering with a Curie temperature of circa 500 K. However, given its orthorhombic crystal structure that belongs to the non-centrosymmetric and polar space group Pna21, it should exhibit ferroelectric behavior along with magnetoelectric coupling of the two orders (potentially making it one of the few room temperature multiferroic materials). Moreover, the material is characterized by strong magnetic anisotropy, resulting in a ferromag- netic resonance (FMR) frequency in the THz range in the absence of magnetic field and at room temperature. This is of particular interest given its potential use in short-range wireless communications (e.g. 60GHz WiFi) and ultrafast computer non-volatile memories. Due to its metastable nature, ε-Fe2O3 needs to be stabilized at room temperature: to date such feature has been obtained mainly by synthesizing it by sol-gel as nanoparticles embedded inside a SiO2 matrix, with the stabilization mechanism being either pressure or size confinement (or both). Recently however, deposition of epitaxial thin films of ε-Fe2O3 on SrTiO3 (111) was demonstrated; in this case the stabilization is thought to be due to both epitaxial strain and interface interaction between the substrate and the film.

We report the growth by Pulsed Laser Deposition of epitaxial thin films of ε-Fe2O3 and ε-AlxFe2-xO3 on different single crystal substrates, both oxides (SrTiO3, LaAlO3, LSAT, andYSZ) and non-oxides (single crystal Silicon), and discuss the influence of the chosen substrate andof aluminum doping on the structural, magnetic and dielectric properties. In particular, we focused our attention on the effect of Al inclusion inside the ε-Fe2O3 lattice, which should result (i)inthe improvement of the electric properties, given the good ferroelectric properties of the isostructural AlFeO3, and (ii) in a lowering of the FMR frequency due to non-magnetic nature of Al.

Primary author: CORBELLINI, Luca (Institut National de la Recherche Scientifique, Centre EMT, Varennes)

Co-authors: Prof. PIGNOLET, Alain (Institut National de la Recherche Scientifique, Centre EMT, Varennes); Dr HARNAGEA, Catalin (Institut National de la Recherche Scientifique, Centre EMT, Varennes); Dr LACROIX, Christian (Department of Electrical Engineering, Polytechnique Montréal, Montréal); Prof. MENARD, David (Department of Engineering Physics, Polytechnique Montréal, Montréal)

Presenter: CORBELLINI, Luca (Institut National de la Recherche Scientifique, Centre EMT, Varennes)

Session Classification: T3-8 Thin Films I (DSS-DCMMP) / Couches minces I (DSS-DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 39 2016 CAP Congr … / Report of Contributions Documenting the Magnetic Crusa …

Contribution ID: 1019 Type: Invited Speaker / Conférencier invité

Documenting the Magnetic Crusade in Canada and Beyond Wednesday, 15 June 2016 08:30 (30 minutes)

Canada has a long history related to the history of the study and measurement of geomagnetism. In 1840, the observatory at Toronto was part of a world-wide network for magnetic measurements; in the 19th century, explorers and scientists were active in collecting magnetic data in field surveys throughout our territories; in the 20th century, Canadian scientists did pioneering oceanographic and airborne studies; and today Canadian physicists are part of the SWARM project from space. In this paper, I describe this history, in particular some of the key instruments used by scientists in these diverse studies. The Canada Science and Technology Museum is presently documenting and collecting instruments and records from this history. In addition, we are combining our findings with British colleagues to create a larger, global picture of the magnetic crusade.

Primary author: PANTALONY, David (Canada Science and Technology Museum) Presenter: PANTALONY, David (Canada Science and Technology Museum) Session Classification: W1-7 History of Physics (DHP) / Histoire de la physique (DHP)

Track Classification: History of Physics / Histoire de la physique (DHP)

September 29, 2021 Page 40 2016 CAP Congr … / Report of Contributions Basic elements of loop quantum gr …

Contribution ID: 1020 Type: Invited Speaker / Conférencier invité

Basic elements of loop quantum gravity Tuesday, 14 June 2016 16:45 (30 minutes)

The main idea of loop quantum gravity (LQG) is to develop a canonical quantum theory ofgeneral relativity (GR). In this talk, I will give a pedagogical account of LQG aimed at physicists who are unfamiliar with the field. The main focus will be on basic elements of the construction andhow these relate to more familiar objects in GR and quantum field theory.

Primary author: ZIPRICK, Jonathan Presenter: ZIPRICK, Jonathan Session Classification: T3-4 Quantum Gravity and Quantum Cosmology (DTP) / Gravité quantique et cosmologie quantique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 41 2016 CAP Congr … / Report of Contributions Single Particle Structure and Shap …

Contribution ID: 1021 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Single Particle Structure and Shapes of Exotic Sr Isotopes Monday, 13 June 2016 13:15 (15 minutes)

Nuclei near the so called magic numbers of protons and neutrons are observed to have a spherical shape in their low lying states. Nuclei between magic numbers, where the binding energy tends to be less, are often observed to show deformation in low lying states. These deformations have either a prolate or oblate nature. States within a nucleus that have different shapes that are close in energy are colloquially referred to as shape coexisting. A dramatic occurrence of shape coexisting states is observed in nuclei in the vicinity of Z=40, N=60, which is the subject of substantial current experimental and theoretical effort. An important aspect in this context is the evolution of single particle structure forN<60 leading up to the shape transition region, which can be calculated with modern large scale shell model calculations using a 78Ni core or Beyond Mean Field Models. One-neutron transfer reactions are a proven tool to study single-particle energies as well as occupation numbers. Here we report on the study of the single-particle structure in 95,96,97Sr via (d,p) one-neutron transfer reactions in inverse kinematics. The experiments presented were performed in the ISAC facility using the TIGRESS gamma-ray spectrometer in conjunction with the SHARC charged-particle detector. Highly charged beams of 94,95,96Sr, produced in the ISAC UCx target and charge-bred by an ECR source were accelerated to 5.5 MeV/A in the superconducting ISAC-II linac before delivery to the experimental station. Other than their clear scientific value, these measurements were the first high mass (A>30) post-accelerated radioactive beam experiments performed at TRIUMF.

A thorough analysis of single particle states will improve our understanding of the onset of these unique structures, encouraging the ongoing theoretical discussions. Through 95Sr(d,p) a strong occupation of the first excited 0+ state and a weak population of the second 0+ state was measured. This suggests that there is strong mixing between the ground state and thefirst0+. These results discussed in the context of the evolution of single-particle structure will be presented.

Primary authors: Prof. WIMMER, Kathrin (University of Tokyo); Dr BENDER, Peter (Michigan State University); KRUECKEN, Reiner (TRIUMF); CRUZ, Steffen Co-authors: Dr GARNSWORTHY, Adam (TRIUMF); Mr KNAPTON, Andrew (University of Sur- rey); Dr UNSWORTH, Carl (University of Liverpool); DIGET, Christian Aaen (University of York); Prof. ANDREOIU, Corina (Simon Fraser University); Mr CROSS, David (Simon Fraser University); AMES, Friedhelm (TRIUMF); HACKMAN, Greg (TRIUMF); LASSEN, Jens (TRIUMF); Ms KUHN, Keri (Col- orado School of Mines); Dr MARCHETTO, Marco (TRIUMF); MOUKADDAM, Mohamad (TRIUMF); Mr TERPSTRA, Nicholas (Central Michigan University); ORR, Nigel (LPC-Caen / IN2P3-CNRS); Ms SACHM- PAZIDI, Ntiana (Central Michigan University); Dr VOSS, Philip (Concodia); KANUNGO, Rituparna (TRIUMF); LAXDAL, Robert (TRIUMF); Mr BRAID, Ryan (Colorado School of Mines); Prof. DRAKE, Tom (University of Toronto); CATFORD, Wilton; Dr KORTEN, Wolfram (CEA) Presenter: CRUZ, Steffen Session Classification: M2-1 Nuclear Structure I (DNP) / Structure nucléaire I (DPN)

September 29, 2021 Page 42 2016 CAP Congr … / Report of Contributions Single Particle Structure and Shap …

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 43 2016 CAP Congr … / Report of Contributions Development of the Canadian Ion …

Contribution ID: 1023 Type: Oral (Non-Student) / orale (non-étudiant)

Development of the Canadian Ionosphere and Atmosphere Model Monday, 13 June 2016 11:00 (15 minutes)

Current status of the Canadian Ionosphere and Atmosphere Model (C-IAM) project is described. The C-IAM has been composed from two pre-existing first principles models: the extended Cana- dian Middle Atmosphere (CMAM) and the ionospheric part of the Upper Atmosphere Model (UAM). The model domain extends from the surface to the inner magnetosphere and two-way coupling between the neutral atmosphere and ionosphere is implemented. These features make the C-IAM a self-consistent whole atmosphere model that is capable of studying both the impact of the lower atmosphere on the thermosphere and the ionosphere and the impact of geomagnetic conditions on the neutral atmosphere. In addition to the first principles modelling blocks, the C-IAM includes alternative empirical models (e.g., MSISE) which can optionally be used for specific studies. In order to reproduce the response to specific space weather events, the model has an option to accommodate the real (observed) high-latitudinal electric field and auroral energetic electron distribution. The C-IAM has been successfully applied to reproducing a number of observed thermospheric/ionospheric features. These include simulating the wave number 4 features observed in the nighttime O ionospheric emission at 135.6 nm, modeling the 732 nm O+ daytime emission and retrieving from it the atomic oxygen concentration, and explaining disturbances measured by the GOCE satellite accelerometers over high latitudes during geomagnetically active days. The presentation will introduce the model and describe these results.

Primary author: MARTYNENKO, Oleg (York University) Co-authors: Ms INCE, Elmas Sinem (York University); Prof. SHEPHERD, Gordon (York Univer- sity); Prof. MCWILLIAMS, Kathryn (University of Saskatchewan); Prof. PAGIATAKIS, Spiros (York University); Dr FOMICHEV, Victor (York University); Prof. WARD, William (University of New Brunswick); Dr CHO, Young-Min (York University) Presenter: MARTYNENKO, Oleg (York University) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 44 2016 CAP Congr … / Report of Contributions Generating Einstein gravity, cosm …

Contribution ID: 1024 Type: Oral (Non-Student) / orale (non-étudiant)

Generating Einstein gravity, cosmological constant and Higgs mass from restricted Weyl invariance Tuesday, 14 June 2016 13:45 (15 minutes)

Recently, it has been pointed out that dimensionless actions in four dimensional curved spacetime possess a symmetry which goes beyond scale invariance but is smaller than full Weyl invariance. This symmetry was dubbed restricted Weyl invariance. We show that starting with a restricted Weyl invariant action that includes pure R2 gravity and a Higgs sector with no explicit mass, one can generate the Einstein-Hilbert action with cosmological constant and a Higgs mass. The model also contains an extra massless scalar field which couples to the Higgs field (and gravity). Ifthe coupling of this extra scalar field to the Higgs field is negligibly small, this fixes the coefficientof the nonminimal coupling RΦ2 between the Higgs field and gravity.

Primary author: Prof. EDERY, Ariel (Bishop’s University) Co-author: Dr NAKAYAMA, Yu (Caltech) Presenter: Prof. EDERY, Ariel (Bishop’s University) Session Classification: T2-7 Gravity, Astrophysics and Cosmology (DTP) / Gravité, astrophysique et cosmologie (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 45 2016 CAP Congr … / Report of Contributions Emergent charge order in cuprate …

Contribution ID: 1025 Type: Oral (Non-Student) / orale (non-étudiant)

Emergent charge order in cuprate high temperature superconductors Wednesday, 15 June 2016 09:00 (15 minutes)

Charge ordered phases are now found in a wide range of underdoped cuprate high temperature superconductors. The relationship between these phases and nearby antiferromagnetic, superconducting, and pseudogap phases is not well established. However, the close proximity of the different phases suggests the possibility of nontrivial mixed states comprising multiple coexisting phases. In this talk, I will review our recent theoretical calculations to understand charge order and, in particular, its relationship to the pseudogap.

Primary author: Prof. ATKINSON, Bill (Trent University) Co-authors: Prof. KAMPF, Arno (Augsburg University); Dr BULUT, Sinan (Augsburg Univer- sity)

Presenter: Prof. ATKINSON, Bill (Trent University) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 46 2016 CAP Congr … / Report of Contributions Vibrating-Wire Rheology

Contribution ID: 1026 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Vibrating-Wire Rheology Monday, 13 June 2016 11:30 (15 minutes)

We are investigating the use of a vibrating wire device to measure the viscoelastic moduli of non- Newtonian fluids. Our device consists of a tungsten wire under tension and immersed inafluid. When a magnetic field is applied and an alternating current is passed through the wire, itvibrates at the driving frequency. The resonance frequency of the wire can be tuned by varying its length and the applied tension. We measure the voltage induced across the wire as a function of frequency. An analytic expression can be derived relating the voltage across the wire to viscosity. For non- Newtonian fluids we modify the Newtonian expression to include a complex viscosity, allowing the viscoelastic moduli to be determined from the measured voltage. We discuss the design and operation of our vibrating wire rheometer and demonstrate its ability to accurately measure the properties of Newtonian and non-Newtonian fluids.

Primary author: HOPKINS, Cameron (The University of Western Ontario) Co-author: DE BRUYN, John (Western University) Presenter: HOPKINS, Cameron (The University of Western Ontario) Session Classification: M1-5 Soft Matter and Polymers (DCMMP-DPMB) / Matière molle et polymères (DPMCM-DPMB)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 47 2016 CAP Congr … / Report of Contributions Spacetime in Everett’s interpretati …

Contribution ID: 1027 Type: Poster (Non-Student) / affiche (non-étudiant)

Spacetime in Everett’s interpretation of quantum mechanics Tuesday, 14 June 2016 19:02 (2 minutes)

Sixty years ago, Hugh Everett III suggested that when a quantum observable is measured byan apparatus, all possible results of the measurement exist. Many different ways to understand this statement have later been proposed, which roughly fall under the headings of many worlds, many minds and decohering sectors of the wave function. Understanding multiplicity is, in my view, a pressing problem in making sense of Everett’s approach. Related to this is the problem ofthe nature of space, or spacetime. It turns out that interpreters of Everett view spacetime in different ways. Some believe, for instance, that all worlds exist in a single spacetime, others that spacetime itself splits, others still that the spacetime of quantum mechanics and quantum field theory is not the same as the macroscopic spacetime. I intend to analyse some consequences of such views, and will argue that much remains to be done for this approach to be defined adequately.

Primary author: Prof. MARCHILDON, Louis (Université du Québec à Trois-Rivières) Presenter: Prof. MARCHILDON, Louis (Université du Québec à Trois-Rivières) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 48 2016 CAP Congr … / Report of Contributions Near-BPS Skyrme Models for Nuclei

Contribution ID: 1028 Type: Oral (Non-Student) / orale (non-étudiant)

Near-BPS Skyrme Models for Nuclei Thursday, 16 June 2016 09:30 (15 minutes)

We present our most recent results regarding Near-BPS Skyrmions and argue that they provide an improved description of nucleons and nuclei. For some years now, the Skyrme Model and extensions have been considered natural candidates for a low-energy effective theory of QCD, a point of view supported by results coming from 1/N expansion and holographic QCD. This framework leads to an attractive picture: baryons (and nuclei) emerge as topological solitons witha topological number identified to the baryon number. But the most naive Skyrme Model extensions have been plagued with the same problem: they predict large binding energies for the nuclei. On the other hand, the solutions that arise from the more recently proposed near-BPS Skyrme models nearly saturate the Bogomol’nyi bound which means that by construction there must have small binding energies. We address a number of issues related to the strength of each terms in the Lagrangian and the form of the potential of these models with their consequences on the baryon density configurations, Coulomb energies, isospin symmetry breaking, binding energies andmean radius of the nuclei, the pion mass and more.

Primary author: MARLEAU, Luc (Université Laval) Co-author: Mr GIASSON, Nicolas (Université Laval) Presenter: MARLEAU, Luc (Université Laval) Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 49 2016 CAP Congr … / Report of Contributions Introductory Experiments from Sc …

Contribution ID: 1029 Type: Oral (Non-Student) / orale (non-étudiant)

Introductory Experiments from Scratch Tuesday, 14 June 2016 09:00 (15 minutes)

The Augustana Campus of the University of Alberta will be introducing two major pedagogical initiatives in 2017 that will provide opportunities to reimagine the student experience. One such opportunity will be the creation of an exclusively lab-based, multidisciplinary, compressed-term science course designed for non-science students. I will begin by outlining the context of this new course and its probable features. In particular, I intend to bookend the course with some sort of PER-like testing to investigate the state and evolution of students’ attitudes towards science. Next, I’ll flip things so that you can provide me with feedback, ideas, or suggestions that mightbe incorporated into upcoming design phases.

Primary author: BLOKLAND, Ian (University of Alberta) Presenter: BLOKLAND, Ian (University of Alberta) Session Classification: T1-2 Lab Revitalisation: Innovative and Distance Undergraduate Labs (DPE) / Revitalisation de labos : laboratoires de premier cycle innovateurs et à distance (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 50 2016 CAP Congr … / Report of Contributions Random Matrices Approach to Ne …

Contribution ID: 1030 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Random Matrices Approach to Neutrino Masses Tuesday, 14 June 2016 19:12 (2 minutes)

The origin of neutrinos masses is one of the great mysteries of modern physic. As it turnsout, the Standard Model of particle physics cannot account for massive neutrinos. They can only be described as massless Weyl spinors (left handed) due to symmetry constraints. On the other hand, experiments on neutrinos oscillations have provided strong evidence for a non-zero mass, which indicate the presence of a mechanism or phenomenon beyond the current limit of our understanding. To generate the neutrino masses, we choose to work in a minimal extension of the standard model in which three right handed (sterile) neutrinos are added to the particle content in order to use the type I seesaw mechanism. However, due to the lack of knowledge about the underlying theory of neutrino masses and mixing, the parameters and couplings of the two mass matrices allowed by gauge invariance (i.e. the Dirac and Majorana mass matrices M D and M R respectively) cannot be predicted.

In order to overcome this obstacle, we choose to adopt the anarchy scenario proposed by Mu- rayama et al., which allow us to randomly generate these matrices and study the resulting spectrum (for the eigenvalues) with the tools develop in the study of random matrix theory. In this work, we propose to compute the joint probability distribution for the mass matrix eigenvalues (of arbitrary dimensions) using the seesaw mechanism and extract information on neutrinos masses from the resulting spectrum. This statistical analysis allows determining among other things, the hierarchy of the mass spectrum and the mass gap between generations.

Primary author: GIASSON, Nicolas (Université Laval) Co-authors: FORTIN, Jean-François (Université Laval); MARLEAU, Luc (Université Laval) Presenter: GIASSON, Nicolas (Université Laval) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 51 2016 CAP Congr … / Report of Contributions Chiral spin liquid from magnetic …

Contribution ID: 1031 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Chiral spin liquid from magnetic Wannier states Wednesday, 15 June 2016 16:15 (15 minutes)

We present a mapping of a two-dimensional system of interacting bosons in a strong perpendicular magnetic eld to an equivalent system of interacting bosons on the square lattice in the absence of the eld. The mapping utilizes a magnetic Bloch and the corresponding magnetic Wannier sin- gleparticle basis in the lowest Landau level. By construction, the ground states of the resulting model of interacting bosons on the square lattice are gapped fractionalized liquids or gapless Bose metal states with broken time reversal symmetry at specic rational lling fractions.

Primary author: PANFILOV, Ivan Co-authors: Mr PATRI, Adarsh (University of Waterloo); Prof. BURKOV, Anton (University of Waterloo); Prof. YANG, Kun (Florida State University) Presenter: PANFILOV, Ivan Session Classification: W3-3 Quantum Transport (DCMMP) / Transport quantique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 52 2016 CAP Congr … / Report of Contributions The Accurate Determination of Ra …

Contribution ID: 1032 Type: Oral (Non-Student) / orale (non-étudiant)

The Accurate Determination of Radionuclides without Prior Chemical Separation of Interferences using an Agilent 8800 ICP-MS/MS Wednesday, 15 June 2016 09:00 (15 minutes)

This paper summarizes the accomplishments-to-date of the Agilent 8800 ICP-MS/MS in thedirect determination of the radionuclides, 90Sr+, 129I+, 137Cs+, 238Pu+, 239Pu+, and 236U+/238U+ ratios by tandem mass spectrometry with chemical resolution using gas-phase ion chemistry. The ICP-MS/MS configuration consists of a collision reaction cell (CRC) between two quadrupole mass filters, Q1 and Q2. The abundance sensitivity afforded by tandem MS is better than10E-10, eliminating wing overlaps of 127IH+ on 129I+ and 238U+ on 237Np+ and 239Pu+. The CRC is filled with a gas that reacts with the analyte and its interferences at different rates. When the reaction kinetics favor the analyte, the analyte is converted to a molecular ion which is then measured in “mass-shift” mode. The interference from 235UH+ on 236U+ was circumvented by oxidizing U with O2. The 236U+/238U+ ratio was determined as a 236U16O+/238U16O+ ratio. When the reaction kinetics favor the interferent, the interferent is converted to another form and the analyte is measured at its elemental mass (the “on-mass” mode). Differences in the oxidizing efficiencies of N2O, O2, CO2 were used to discriminate interferences Ba+ from Cs+, 90Zr+from 90Sr+, and 239U+ from 239Pu+, respectively. The 238U+ interference on 238Pu+ was removed by reacting U+ to amine cluster ions by a blend of 10% NH3/90% He. The 129Xe+ interference on 129I+ was removed by charge transfer reaction with O2.

Q1 is unique to the Agilent 8800x ICP-MS/MS: it is a unit mass resolution mass spectrometer, operated under vacuum, and precedes the reaction cell. This configuration is vital for the successful and simple implementation of chemical resolution in ICP-MS. Results from the efforts of many scientists will be presented.

Primary author: Ms WEE, Pamela (Agilent Technologies Canada Inc) Presenter: Ms WEE, Pamela (Agilent Technologies Canada Inc) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 53 2016 CAP Congr … / Report of Contributions Antagonistic effects of nearest- …

Contribution ID: 1033 Type: Oral (Non-Student) / orale (non-étudiant)

Antagonistic effects of nearest-neighbor repulsion on the pairing dynamics of the extended Hubbard model Thursday, 16 June 2016 08:45 (15 minutes)

While most experimental and theoretical clues lean towards a magnetic origin for the pairing mechanism of cuprates, the question of its degree of retardation in the strong correlation regime remains highly controversial.[1,2] The answer to this question lies partly in the frequency dependence of the anomalous spectral function of doped Mott insulators, extracted at finite temperature viathe MaxEntAux method [3] for analytic continuation. Using Cellular Dynamical Mean-Field Theory for the Hubbard model with nearest-neighbor repulsion V , we show that this repulsion has antagonistic effects on the critical temperature Tc as it boosts Tc at low doping but diminishes it at large doping. The study of pair-breaking and pair-forming contributions to superconductivity clarifies the nature of these effects. They emerge from a compromise between the trivial Coulomb pair- breaking effect of V and a more subtle pair-forming effect of V . The latter arises from the strength- ening of short-ranged antiferromagnetism through the coupling constant J = 4t2/(U −V ) where U is the on-site Hubbard interaction, and t the hopping amplitude. [1] P.W. Anderson, Science 316, 1705 (2007). [2] D.J. Scalapino, e-letter response to Science 316, 1705 (2007).

[3] A. Reymbaut, D. Bergeron and A.-M.S. Tremblay, Phys. Rev. B 92, 060509(R) (2015)

Primary author: Dr REYMBAUT, Alexis (Université de Sherbrooke) Co-authors: Prof. TREMBLAY, André-Marie (Université de Sherbrooke); Prof. SORDI, Giovanni (Royal Hollaway, University of London); Mr FRATINO, Lorenzo (Royal Holloway, University of Lon- don); Mr FELLOUS ASIANI, Marco (Université de Sherbrooke); Dr CHARLEBOIS, Maxime (Université de Sherbrooke); Dr SÉMON, Patrick (Université de Sherbrooke) Presenter: Dr REYMBAUT, Alexis (Université de Sherbrooke) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 54 2016 CAP Congr … / Report of Contributions Induced False Vacuum Decay by T …

Contribution ID: 1034 Type: Invited Speaker / Conférencier invité

Induced False Vacuum Decay by Topological Solitons Monday, 13 June 2016 15:45 (30 minutes)

We review our work concerning the decay of the false vacuum by quantum tunnelling transitions. When the false vacuum manifold is non-trivial, it can lock in topological defects. We have considered the possibility that these are magnetic monopoles, cosmic strings, domain walls and most recently, Skyrmions. In all of these cases, the topological defect must realize the true vacuum inside its core. The dynamics generically traps the true vacuum in the core of the defect in a meta-stable state which is unstable to quantum tunnelling transitions. The transition typically inflates the core region until the region of true vacuum is large enough to inflate without restriction. We show how to compute the corresponding instanton and the decay rate using the path integral. Our analysis can be applied to phase transitions in cosmology within the context of field and string theory but also to condensed matter systems.

Primary author: PARANJAPE, Manu (Université de Montréal) Co-authors: MACKENZIE, Richard (U. Montréal); Prof. YAJNIK, Urjit (Indian Institute of Technol- ogy Bombay)

Presenter: PARANJAPE, Manu (Université de Montréal) Session Classification: M3-3 Fields and Strings (DTP) / Champs et cordes (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 55 2016 CAP Congr … / Report of Contributions Investigation of Entropy-Enthalpy …

Contribution ID: 1035 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Investigation of Entropy-Enthalpy Compensation Effect on the Ti-V-Cr system Tuesday, 14 June 2016 19:34 (2 minutes)

Hydrogen has attracted a permanent interest as a future energy carrier because of its high ignition power and pollution free nature. One problem facing the widespread of hydrogen as an energy carrier is storage. Presently the main ways to store hydrogen are in liquid form or as a high pressure gas. Both techniques have their drawbacks and new ways to store hydrogen at room temperature and low pressure should be found. One possible candidate is to store hydrogen in metal hydrides where hydrogen is chemically bonded to the metal atoms. Among various materials body centered cubic (BCC) solid solutions and alloys are found very promising due to their high volumetric storage capacity and relatively high gravimetric capacity. We have recently found that in Ti-V-Cr BCC solid solutions the enthalpy of hydrogenation is linearly related to the entropy change. This is the so-called enthalpy-entropy compensation. The aim of the present workisto investigate the entropy-enthalpy compensation effect by varying the elemental concentration of the Ti-V-Cr system. For this purpose, sample with different elemental concentration doped with 4wt.% of Zr7Ni10 have been synthesized by arc melting. The XRD patterns of as-cast samples confirm their BCC crystal structure. Lattice parameter and crystallite size were calculated byRietveld analysis and hydrogenation studies were carried-out using a home-made hydrogen titration system. We found that for compositions Ti60V3Cr37, Ti52V12Cr36, Ti48V15Cr37, Ti42V21Cr37, and Ti33V30Cr37 the entropies and enthalpies are linearly correlated. The slope (Compensation temperature) was calculated to be 617 K. Possible explanations of this phenomenon will be discussed.

Primary author: Ms DIXIT, Viney (UQTR) Co-authors: Prof. HUOT, Jacques (UQTR); Mr BIBIENNE, Thomas (UQTR) Presenter: Ms DIXIT, Viney (UQTR) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 56 2016 CAP Congr … / Report of Contributions Spin Correlation Functions on Pyr …

Contribution ID: 1036 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Spin Correlation Functions on Pyrochlore Lattice Tuesday, 14 June 2016 19:48 (2 minutes)

Pyrochlores have the chemical formula A2B2O7 with A, B or both magnetic. It has corner-sharing tetrahedra in the structure, therefore, frustration phenomena naturally occurs in these systems. Because of the frustration, pyrochlore have many interesting properties, including the spin glass in Y2Mo2O7, spin liquid in Tb2Ti2O7, disordered spin ice in Ho2Ti2O7, and ordered spin ice in Tb2Sn2O7. I will focus on Tb2Ti2O7 particularly, use perturbation theory to find the spin correlation function between the nearest neighbour for the spin 1/2 system.

Primary author: WEI, chen (Memorial University of Newfoundland) Presenter: WEI, chen (Memorial University of Newfoundland) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 57 2016 CAP Congr … / Report of Contributions Secular Increase of the Astronomi …

Contribution ID: 1037 Type: Oral (Non-Student) / orale (non-étudiant)

Secular Increase of the Astronomical Unit: A Hubble-like Expansion? Wednesday, 15 June 2016 16:00 (15 minutes)

This paper analyses the outcome of a new metric [1] that describes the space-time geometryof a static symmetric massive celestial object. It is based on an erfc potential that characterizes the gravitation field emerging from this model. The metric relies on an intrinsic physical constantσ, a star-specific proper length that scales measurements in its surroundings. Although σmustbe evaluated experimentally, we propose a heuristic to estimate its value and call attention to the resultant numerical predictions regarding the Hubble constant and the secular increase of the As- tronomical Unit (AU). In this context, the Hubble constant provides an experimental backing to the new metric. As a corollary, the metric conveys theoretical support to the Hubble methodology for standardizing the various extragalactic distance measurements. However, the definition of the Hubble constant is star specific; its value in the solar system is derived from theSun erfc metric. To support this specificity hypothesis, we show that the secular increase of the AU is the resultof a similar space-time expansion effect. Indeed, the AU spread out rate is predicted with thesame paradigm, using the Earth erfc metric in this case. These accurate numerical estimates support the concept of a specific proper length σ associated to a massive object, at the expense of challenging our understanding of the space-time expansion. [1]Plamondon, R., Ouellet-Plamondon, (2015), Emergence of a quasi-Newtonian law of gravitation: a geometrical impact study in Rosquist, K., Jantzen, R.T., Ruffini, R., Eds., On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories, World Scientific, Singapore, 1301.

Primary author: PLAMONDON, Réjean (École Polytechnique de Montréal) Presenter: PLAMONDON, Réjean (École Polytechnique de Montréal) Session Classification: W3-5 Cosmology and Astrophysics (DTP-DIMP-PPD) / Cosmologie et astrophysique (DPT-DPIM-PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 58 2016 CAP Congr … / Report of Contributions Turnaround radius in an accelerat …

Contribution ID: 1038 Type: Oral (Non-Student) / orale (non-étudiant)

Turnaround radius in an accelerated universe for Einstein and for modified gravity Wednesday, 15 June 2016 15:45 (15 minutes)

In an accelerating universe there is a maximum radius above which a shell of test particles cannot collapse and is dispersed by the cosmic expansion. This radius could be used in conjunction with observations of large structures to constrain the equation of state of the universe. We express the turnaround radius in general relativity in terms of the Hawking quasilocal mass and we extend the concept to modified theories of gravity for which the gravitational slip is non-vanishing.

[Based on V. Faraoni, M. Lapierre-Leonard & A. Prain 2015, JCAP 10, 013; V. Faraoni 2016, Phys. Dark Universe 11, 11]

Primary author: FARAONI, Valerio (Bishop’s University) Presenter: FARAONI, Valerio (Bishop’s University) Session Classification: W3-5 Cosmology and Astrophysics (DTP-DIMP-PPD) / Cosmologie et astrophysique (DPT-DPIM-PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 59 2016 CAP Congr … / Report of Contributions Paczynski-Wiita-like potential for …

Contribution ID: 1039 Type: Poster (Non-Student) / affiche (non-étudiant)

Paczynski-Wiita-like potential for any static spherical black hole in metric theories of gravity Tuesday, 14 June 2016 19:16 (2 minutes)

We present a Paczynski-Wiita-like pseudo-Newtonian potential describing the orbits of particles in arbitrary static and spherically symmetric spacetimes, including black hole solutions of alternative theories of gravity. This general prescription differs substantially from a previous one, showing that the association of pseudo-potentials with black hole spacetimes is not unique.

[Based on V. Faraoni, S. Belknap-Keet & M. Lapierre-Leonard 2016, Phys. Rev. D 93, 044042]

Primary author: FARAONI, Valerio (Bishop’s University) Presenter: FARAONI, Valerio (Bishop’s University) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 60 2016 CAP Congr … / Report of Contributions Comparison of quantum and class …

Contribution ID: 1040 Type: Oral (Non-Student) / orale (non-étudiant)

Comparison of quantum and classical trajectory Monte Carlo simulations of low energy electron transport in water and biological tissues Wednesday, 15 June 2016 09:00 (15 minutes)

Monte Carlo simulations are increasingly applied in medical physics to understand radiation interactions and energy deposition on sub-micron length scales within biological targets, e.g. DNA. These classical trajectory Monte Carlo simulations neglect the quantum wave nature of electrons, however, quantum effects may become non-negligible at sub-1 keV energies. In this work, quantum mechanical (QM) and classical trajectory Monte Carlo (MC) simulations are compared within a simplified model of electron transport in small droplets of condensed media. In QM simulations, water droplets are modeled as collections of > 103 point scatterers (molecules) from which electrons may be isotropically scattered. Scatterer positions are random or constrained by a minimum scatterer-to-scatterer separation, dmin. Elastic and inelastic (absorption) cross sections are varied. For QM calculations, the system of > 103 coupled equations for the electron wavefield incident on each scatterer is solved numerically for each droplet; results are thenaver- aged over > 105 droplets each with different scatterer positions but otherwise same parameters. Average QM water droplet incoherent differential cross section and scattering event density are compared with MC analogues; relative errors on MC results are computed. Relative errors on MC results are sensitive to electron wavelength, droplet shape and structure, scatterer number density, and interaction cross sections; relative errors on droplet differential cross section generally differ from errors on scattering event density. The inclusion of structure (dmin ≠ 0) enhances differences between QM and MC results: relative errors increase with dmin. Introducing inelastic scatter while maintaining the same elastic scatter cross section generally increases relative errors with some exceptions (e.g. longer wavelengths and large inelastic cross section).

The quantum wave nature of electrons should not be neglected for accurate simulations ofradiation interactions and energy deposition on short length scales within biological targets. Ongoing work involves the development of more realistic models of electron transport in condensed media.

Primary author: Prof. THOMSON, Rowan (Carleton University) Co-author: Dr KAWRAKOW, Iwan (ViewRay Inc) Presenter: Prof. THOMSON, Rowan (Carleton University) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 61 2016 CAP Congr … / Report of Contributions Spatio-temporal correlations after …

Contribution ID: 1041 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Spatio-temporal correlations after a quantum quench in the Bose-Hubbard model Wednesday, 15 June 2016 15:15 (15 minutes)

The Bose Hubbard model (BHM) is a minimal model that describes interacting ultracold bosons in an optical lattice, allowing the opportunity for experiments to probe quench dynamics of the model. Theoretically, it has proven challenging to study spatio-temporal correlations in the BHM in dimensions higher than one. We use the Schwinger-Keldysh technique and a strong-coupling expansion to develop a two-particle irreducible formalism that allows the study of spatio-temporal correlations in both the superfluid (SF) and Mott-insulating (MI) regimes during a quantum quench for dimensions higher than one. We obtain equations of motion for the superfluid order parameter and two-time correlation functions and present numerical results for the evolution of these functions. We relate our results to recent cold-atom experiments.

Primary author: FITZPATRICK, Matthew (Simon Fraser University) Co-author: KENNETT, Malcolm (Simon Fraser University) Presenter: FITZPATRICK, Matthew (Simon Fraser University) Session Classification: W3-6 Cold and Trapped Atoms, Molecules and Ions (DAMOPC) / Atomes, molécules et ions froids et piégés (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 62 2016 CAP Congr … / Report of Contributions Hydrogen storage properties of Ti …

Contribution ID: 1043 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Hydrogen storage properties of TiFe + x%ZrMn2 (x = 2, 4, 8, 12) alloys Tuesday, 14 June 2016 19:26 (2 minutes)

Hydrogen is considered to be a good candidate to replace oil as an energy vector for mobile and stationary applications. Presently, the main ways to store hydrogen are in the liquid form at very low temperature or in gaseous state in high pressure tanks. However, these two techniques have serious limitations due to the low temperature and high pressure involved. There is thus the need to develop other means of hydrogen storage. Metal hydrides are considered to be good candidates to replace liquid and gaseous storage in many applications because the hydrogen could be stored in a compact way at low temperature and pressure. In a metal hydride the hydrogen is chemically bonded to metal atoms. We present here the effects of ZrMn2 on hydrogen storage properties of TiFe alloys prepared by arc melting. Compositions of the form TiFe+x%ZrMn2 (x = 2, 4, 8, 12) were studied. Each alloy is made of two phases: a primary phase with small amount of zirconium and manganese, and a secondary phase which has a higher proportion of zirconium and manganese than the primary phase. For both primary and secondary phases, when x increases there is substitution of iron by manganese and zirconium. We found that when x increases, the first hydrogenation is much faster and the alloy is getting more stable. Moreover, forx=12,air exposure had a minimal impact on hydrogen sorption behavior. We can conclude that addition of ZrMn2 to TiFe greatly improves the first hydrogenation kinetics and improves the air resistance of the alloy.

Primary authors: HUOT, Jacques (UQTR); LV, PENG (UQTR) Presenter: LV, PENG (UQTR) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 63 2016 CAP Congr … / Report of Contributions Hydrogen storage properties of Ti …

Contribution ID: 1044 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Hydrogen storage properties of TiFe + Zr alloys Tuesday, 14 June 2016 19:32 (2 minutes)

Economic and environmental considerations are pushing the society to replace oil by renewable energies. In this perspective, hydrogen is considered to be a good candidate as an energy vector for mobile and stationary applications. The conventional ways to store hydrogen are in the liquid form at very low temperature or in gaseous state in high pressure tanks. However, these two techniques have serious limitations due to the low temperature and high pressure involved. There is thus the need to develop other means of hydrogen storage. One good candidate is metal hydride where the hydrogen is chemically bonded to metal atoms.In metal hydrides the hydrogen could be stored in a compact way at low temperature and pressure thus making this technique particularly safe. However, in order to be used commercially, the cost of metal hydrides has to be reduced. The aim of this study is to understand the comparative effect of Zr and V on hydrogenation characteristics of TiFe alloy, using industrial grade Fe (ASTM 10005) and Ti (ASTM B265 grade 1) as a raw material. Materials were synthesized by arc melting and studied without further heat treatments. X-ray diffraction patterns were taken to find out the crystal structures of pure TiFe and dopedTiFe alloys. Morphology and compositional analysis were studied by Scanning electron microscopy (SEM) image and energy dispersive x-ray spectroscopy (EDX).We found that TiFe alloy doped with 4 wt% of Zr leads to a remarkable improvement of the first hydrogenation behavior of TiFe alloy.

Primary author: Mr PATEL, Abhishek Kumar (UQTR) Co-author: Prof. HUOT, Jacques (UQTR) Presenter: Mr PATEL, Abhishek Kumar (UQTR) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 64 2016 CAP Congr … / Report of Contributions Report on the 2016 Canadian Conf …

Contribution ID: 1045 Type: Oral (Non-Student) / orale (non-étudiant)

Report on the 2016 Canadian Conference for Undergraduate Women in Physics (CCUWiP) and partnership development with the American Physical Society organization Tuesday, 14 June 2016 13:45 (15 minutes)

The third edition of the Canadian Conference for Undergraduate Women in Physics (CCUWiP) series was held at Dalhousie University on 8-10 January 2016. A conference report for this 2016 edition will be presented as well as statistics from the past three editions held in Canada so far. The second part of this talk will present the status of the ongoing work to develop along-term partnership with the US American Physical Society CUWiP organization.

Primary author: VACHON, Brigitte (McGill University (CA)) Co-authors: Ms CROMBIE, Anna (Dalhousie University); Ms SHOULDICE, Emma (Dalhousie Uni- versity); Ms CAULIER, Kali (Dalhousie University); Ms CARMEN, Lee (Dalhousie University); Ms ROTERMUND, Lina (Dalhousie University); Ms RILLING, Madison (Laval University); Ms BERG- ERON-SAVARD, Marie-Joel (Laval University); Ms SHAHISAVANDI, Neyousha (Dalhousie Univer- sity); Ms MACKENZIE, Ruthven (Dalhousie University); Ms HYATT, Sarah (Dalhousie University); Ms SULLIVAN, Veronica (Dalhousie University)

Presenter: VACHON, Brigitte (McGill University (CA)) Session Classification: T2-8 Doing Physics-doing Gender: Should gender issues be of any importance in the physics community? (CEWIP) / Physique et genre : les questions de genre devraient-elles avoir de l’importance dans la communauté de physique? (CEFEP)

Track Classification: Women in Physics / Femmes en physique (CEWIP-CEFEP)

September 29, 2021 Page 65 2016 CAP Congr … / Report of Contributions Constraining neutron capture rate …

Contribution ID: 1046 Type: Invited Speaker / Conférencier invité

Constraining neutron capture rates far from stability and astrophysical implications Monday, 13 June 2016 16:15 (30 minutes)

The astrophysical r-process is responsible for the synthesis of about half of the isotopes ofthe heavy elements. Despite its well-known role in nucleosythesis, the astrophysical site where it takes place has not been unambiguously determined. Efforts for the better understanding ofthis important process span across many fields, from astronomical observations of metal-poor stars, and modeling of the possible scenarios, to sensitivity studies to input parameters, nuclear theory calculations and nuclear experiments. The present talk will focus on the experimental efforts for providing nuclear input information to help improve our understanding of the r-process. One of the important inputs, that is practically unconstrained by experiment, is neutron capture reactions. The talk will focus on the development of a new technique (β-Oslo) to experimentally constrain these important (n,γ) reaction rates far from stability. The experiments were done at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University using the γ-calorimeter SuN. The validation of the β-Oslo technique, first physics results and implications for astrophysical calculations will be presented.

Primary author: SPYROU, Artemis (Michigan State University) Presenter: SPYROU, Artemis (Michigan State University) Session Classification: M3-1 Nuclear Astrophysics (DNP) / Astrophysique nucléaire (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 66 2016 CAP Congr … / Report of Contributions ATLAS New Small Wheel (NSW) …

Contribution ID: 1047 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

ATLAS New Small Wheel (NSW) small-strip Thin Gap Chamber (sTGC) simulation in Athena Wednesday, 15 June 2016 09:15 (15 minutes)

The muon detector subsystem known as the small wheel of the ATLAS experiment will becom- pletely replaced during the long shut down of the LHC starting in 2019. The replacement New Small Wheel (NSW) will have 16 sensitive layers, these layers are comprised of 2 different detector technologies: 2 quadruplet layers of small-strip Thin Gap Chambers (sTGC) and 2 quadruplet layers of MicroMegas detectors (MM). The NSW is built from trapezoidal segments being constructed at institutions around the world including Carleton University. The NSW will be situated ina background radiation dense region (up to 15 kHz/cm2) where it will have to provide Level-1 online trigger information as well as accurately reconstructing muons. The required performance criteria are substantial, particularly a single hit resolution of roughly 100 µm and providing track segments reconstructed online with an angular resolution of roughly 1 mrad. These requirements are motivated by the need to reconstruct muons in the very forward region of ATLAS with high efficiency and high background rejection. The NSW will enable the ATLAS collaboration tostudy the standard model, in particular the decay of the Higgs Boson into 4 muons, throughout future LHC upgrades beyond 2022. The task of simulating the response of these sTGC chambers inthe ATLAS Athena framework and the validation of the simulation is the focus of the research. The sTGC chambers consist of a gas gap with anode wires (1.8 mm pitch) and 2 distinct cathode planes: one with large area pads to serve as a fast trigger (<25 ns) and the other with 2.7 mm wide strips for precise tracking. The research involves simulating the behavior of the chamber due toenergy deposition by ionizing radiation. This simulation includes the drifting of ionization electrons towards the anode wires, an analytic model of the charge dispersion on the cathode strips through a resistive graphite layer, the electronic response of the VMM readout chip, cross talk of neighboring channels and statistical response of the detector as a function of incident muon angle and energy. The simulation is used to perform detailed timing studies of the VMM reading chips includingthe effects of threshold, noise level and dead time. The simulation results are also used toperforma study of trigger efficiency from minimum ionizing muons, an efficiency of 96% was observed.

Primary author: WEBER, Stephen (Carleton University (CA)) Presenter: WEBER, Stephen (Carleton University (CA)) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 67 2016 CAP Congr … / Report of Contributions Chiral basis for particle-rotor mod …

Contribution ID: 1048 Type: Oral (Non-Student) / orale (non-étudiant)

Chiral basis for particle-rotor model for triaxial nuclei Wednesday, 15 June 2016 16:15 (15 minutes)

In the last decade nuclear chirality resulting from an orthogonal coupling of angular momentum vectors in triaxial nuclei has been a subject of numerous experimental and theoretical studies. Three perpendicular angular momenta can form two systems of the opposite handedness, theright- handed and the left-handed system; the time-reversal operator, which reverses orientation ofeach of the components, relates these two systems. The underlying mechanism for generating chiral geometry of angular momentum coupling emphasizes the interplay between single-particle and collective degrees of freedom in nuclear structure physics. In the simplest case of odd- odd nuclei, two out of three mutually orthogonal angular momenta are provided by the high-j valence proton and neutron quasiparticles, which are of particle and hole character as defined by the respective position of the Fermi level within a unique-parity sub-shell. The single-particle contribution to the total energy is minimised when the angular momenta of the particles and holes align along the short and the long axis of the core, respectively. The third angular momentum component is provided by the collective core rotation and aligns along the axis of the largest moment of inertia; this is the intermediate axis for irrotational flow-like moments of inertia for a triaxial body. This simple picture leads to prediction of distinct observables manifesting chirality in rotational structures, most notably to the doubling of states. All these effects can be demonstrated using particle-rotor model for triaxial nuclei, and are especially transparent when a newly developed chiral basis is used in calculations. The model, the basis, numerical results, and comparison to the data will be presented and discussed.

Primary author: Prof. STAROSTA, Krzysztof (Simon Fraser University) Co-authors: CHESTER, Aaron (Simon Fraser University); WILLIAMS, Jonathan (Simon Fraser University); DOMINGO, Thomas (Simon Fraser University) Presenter: Prof. STAROSTA, Krzysztof (Simon Fraser University) Session Classification: W3-1 Nuclear Structure III (DNP) / Structure nucléaire III (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 68 2016 CAP Congr … / Report of Contributions FTIR Synchrotron Spectroscopy of …

Contribution ID: 1049 Type: Oral (Non-Student) / orale (non-étudiant)

FTIR Synchrotron Spectroscopy of the Lower Vibrational Modes of Methyl Mercaptan at the Canadian Light Source Monday, 13 June 2016 16:45 (15 minutes)

The Fourier transform infrared spectra of the lower infrared vibrational bands ofCH3SH have been investigated from 650 to 1200 cm−1 at 0.001 cm−1 resolution employing synchrotron radiation at the Canadian Light Source in Saskatoon. The relative band strengths and structures are remarkably different from those for the analogous CH3OH relative, with the CSH bend being very weak and both the in-plane and out-of-plane CH3 rocks being strong with comparable intensities. The CSH bend has parallel a-type character with no detectable b-type component. The out-of-plane CH3 rock is a purely c-type perpendicular band, whereas the in-plane rock around is of a/b character. The K-reduced vt = 0 sub-state origins for the CSH bend follow the normal oscillatory torsional pattern as a function of K with an amplitude of 0.362 cm−1, as compared to 0.653 cm−1 for the ground state and 0.801 cm−1 for the C-S stretching mode. The torsional energy curves for the out-of-plane rock are also well-behaved but are inverted, with an amplitude of 1.33 cm−1. In contrast, the sub-state origins for the in-plane rock do not display a clear oscillatory structure but are scattered over a range of about 2 cm−1, with indications of some significant perturbations. Our sub-band assignments extend up to about K = 10 for all the modes and are well-determined from GSCD relations, particularly for the a/b in-plane rock for which ∆K = 0, +1 and −1 transitions are all observed.

Primary author: Dr LEES, Ronald M. (Physics Dept., University of New Brunswick) Co-authors: Dr BILLINGHURST, Brant E. (Canadian Light Source); Dr XU, Li-Hong (Physics Dept., University of NB)

Presenter: Dr LEES, Ronald M. (Physics Dept., University of New Brunswick) Session Classification: M3-2 Atomic and Molecular Spectroscopy and Precision Measure- ments II (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision II (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 69 2016 CAP Congr … / Report of Contributions The Promise of Quantum Nonline …

Contribution ID: 1050 Type: Invited Speaker / Conférencier invité

The Promise of Quantum Nonlinear Optics Tuesday, 14 June 2016 17:00 (30 minutes)

This presentation first reviews the historical development of the field of nonlinear optics, starting from its inception in 1961. It then reviews some of its more recent developments, including especially how nonlinear optics has become a crucial tool for the developing field of quantum technologies. Fundamental quantum processes enabled by nonlinear optics, such as the creation of squeezed and entangled light states, are reviewed. We then illustrate these concepts by means of specific applications, such as the development of secure communication systems basedonthe quantum states of light in the form of states that carry orbital angular momentum. Light can carry angular momentum both by means of its spin angular momentum (as manifested for example in circular polarization) and by means of its orbital angular momentum (OAM), whose origin is a helical structure of its wavefront. The orbital angular momentum of light has recently been rec- ognized to constitute a crucial attribute for many photonic technologies, including the trapping and manipulation of small particles and for multiplexing in optical telecommunication. In this presentation we review some of the fundamental properties of OAM including its quantum features such as entanglement. We then go on to describe a secure telecommunication system in which information is encoded in OAM, and which can carry more than one bit of information per photon.

Primary author: BOYD, Robert (University of Ottawa) Presenter: BOYD, Robert (University of Ottawa) Session Classification: T3-3 Quantum Computing and Coherent Control (DAMOPC) /Cal- cul quantique et contrôle cohérent (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 70 2016 CAP Congr … / Report of Contributions Longitudinal perturbations in ther …

Contribution ID: 1051 Type: Oral (Non-Student) / orale (non-étudiant)

Longitudinal perturbations in thermospheric atomic oxygen concentrations observed at mid-latitudes by the Wind Imaging Interferometer compared with the Canadian Ionosphere and Atmosphere Model Wednesday, 15 June 2016 09:00 (15 minutes)

The Canada/France WIND Imaging Interferometer (WINDII) made measurements from NASA’s Upper Atmosphere Research Satellite from 1991 to 2003. The observations were of upper atmospheric winds in the altitude range 80 to 300 km from Doppler shifts of the visible region emissions from a number of species. Altogether the atomic oxygen O(1S) 557.7 nm and O(1D) 630.0 nm emissions along with lines in the OH (8,3) band, and O2 Atmospheric band at 760 nm were observed. As well, emission from the O+(2P) emission at 732 nm was included. This excited ion is produced by solar photoionization from the ground state atomic oxygen and so from the observed emission the concentration of atomic oxygen [O] can be retrieved, but it is only recently that this has been accomplished. In plots of [O] at 250 km versus latitude and longitude acquired during March 1993, a region of depleted [O] near 40 S latitude and 100 W longitude was evident. The GUVI (Global Ultra Violet Imager) far ultraviolet observations of [O] taken ten years later, in March 2003, showed the same feature, but it is not seen in the Canadian Ionosphere and Atmosphere Model. Further preliminary investigations showed that this depletion was the negative portion of a wave 1 in longitude, at that latitude, stationary in local time, and further that this feature appears to have an annual variation. It has also been observed in mass density variations with the CHAMP (CHAllenging Minisatellite Payload). Further investigations are in progress, including the possibility of coupling associated with the “springtime transition” observed with WINDII in the O(1S) 557.7 nm night airglow emission near 100 km and in ground-based observations. One plausible origin is the change in winter to summer circulation. The presentation will include a review ofthe observations, and possible interpretations.

Primary author: Prof. SHEPHERD, Gordon (York University) Co-authors: Dr MARTYNENKO, Oleg (York University); Dr FOMICHEV, Victor (York Univer- sity); Dr CHO, Young-Min (York University) Presenter: Prof. SHEPHERD, Gordon (York University) Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 71 2016 CAP Congr … / Report of Contributions Determination of global-scale diff …

Contribution ID: 1052 Type: Oral (Non-Student) / orale (non-étudiant)

Determination of global-scale diffusion coefficients in the stratosphere using a new model of local mixing Monday, 13 June 2016 10:45 (15 minutes)

Due to the intermittency and spatial distribution of small layers of turbulence in the stratosphere, determination of large-scale diffusion coefficients is a non-trivial process. Previous models haveas- sumed that all layers are perfectly mixed, but generally spatio-temporally disconnected. Our new model allows for partially mixed layers, especially for large and intense layers, which has profound effects on the global-scale diffusion coefficient. We also better represent the spatio-temporal distribution using a 2-dimensional model, as distinct from the more common one-dimensional model. Our newer model is used in combination with balloon and aircraft measurements of layer thicknesses and distributions to place limits on the possible values of large-scale diffusion in the stratosphere and upper troposphere. The values in the stratosphere are particularly well confined.

Primary author: HOCKING, Wayne (University of Western Ontario) Co-authors: Dr TARASICK, David (Environment Canada); Dr OSMAN, Mohammed (Environment Canada)

Presenter: HOCKING, Wayne (University of Western Ontario) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 72 2016 CAP Congr … / Report of Contributions Optical trapping of micrometer siz …

Contribution ID: 1053 Type: Poster (Non-Student) / affiche (non-étudiant)

Optical trapping of micrometer sized latex spheres in the undergraduate advanced lab: learning goals and outcomes Tuesday, 14 June 2016 19:00 (2 minutes)

The all-optical manipulation of 1 to 4 µm latex spheres with a 20 mW He-Ne laser has beenused to demonstrate the concepts of single beam optical trapping in the case when the particle size is comparable to the laser wavelength. Drag coefficient, particle diameter, laser beam waist and trap strength are some of the calculated parameters for the calibration of the optical trap. A CCD camera with high sampling rate is used to video capture the Brownian motion of the spheres in the optical trap as is periodically switched on and off. Students are tested on optics building set-ups and alignment skills. To expand learning outcomes, students conduct analyses on large sets of digitized images for the interpretation of the optical trap properties.

Primary author: MATANSKA, Penka (Carleton Univesity) Co-authors: ROLLIN, Etienne (Carleton University); Mr ANTUNES, Mike (Carleton University)

Presenter: MATANSKA, Penka (Carleton Univesity) Session Classification: DPE Poster Session with beer / Session d’affiches avec bière DPE

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 73 2016 CAP Congr … / Report of Contributions Diffractive vector meson producti …

Contribution ID: 1054 Type: Oral (Non-Student) / orale (non-étudiant)

Diffractive vector meson production using a holographic AdS/QCD light-front wavefunction Thursday, 16 June 2016 10:15 (15 minutes)

We use the colour dipole formalism to compute the rate for diffractive phi meson production using a holographic AdS/QCD wavefunction for the phi. We use a dipole cross-section with parameters fitted to the most recent and very precise 2015 HERA data on the proton’s structure function.We compare our predictions on diffractive phi production to the data collected at the HERA collider and find good agreement.

Primary author: SANDAPEN, Ruben (Acadia University) Co-authors: AHMADY, Mohammad (Mount Allison University); Dr SHARMA, Neetika (Indian Institute of Education and Research Mohali)

Presenter: SANDAPEN, Ruben (Acadia University) Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 74 2016 CAP Congr … / Report of Contributions Astronomy in the undergraduate a …

Contribution ID: 1055 Type: Oral (Non-Student) / orale (non-étudiant)

Astronomy in the undergraduate advanced laboratory: Studying delta-Scuti variable stars Tuesday, 14 June 2016 08:45 (15 minutes)

Astrophysics concepts acquired in undergraduate courses are sometimes difficult to explore ina teaching laboratory for upper year physics students. We will share our experience developing an experiment on variable stars offered as part of an undergraduate advanced lab courses at Carleton University. The stars studied were mainly of the delta-Scuti type (Dwarf Cepheid), becauseof their high amplitude variability and fairly short period. With an amateur level telescope and CCD camera, students collect a sequence of variable star images over the period of a few hours, then process and calibrate the images and extract information related to the star. In addition to the technical aspects of data processing in astronomy, students also learn how differential photometry works, investigate the relationship between the period and the luminosity of the star, calculate the distance of the star and, with photometric filters, study its temperature and radius variations.

Primary author: ROLLIN, Etienne (Carleton University) Co-author: MATANSKA, Penka (Carleton Univesity) Presenter: ROLLIN, Etienne (Carleton University) Session Classification: T1-2 Lab Revitalisation: Innovative and Distance Undergraduate Labs (DPE) / Revitalisation de labos : laboratoires de premier cycle innovateurs et à distance (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 75 2016 CAP Congr … / Report of Contributions Evolution of electronic structure o …

Contribution ID: 1056 Type: Invited Speaker / Conférencier invité

Evolution of electronic structure on transition metal and transition metal doped titanium disulphide by high resolution photoemission spectroscopy study Tuesday, 14 June 2016 09:00 (30 minutes)

In this presentation, I will present the many-body interactions in solids studies by high resolution ARPES. High-resolution angle-resolved photoemission spectroscopy studies of Fe(110) and Ni(110) single crystals has been conducted to clarify the role of many-body interactions acting on the quasiparticles at the Fermi level at low temperatures. We have evaluated the real and imaginary parts of the self-energy for the bulk-derived majority-spin Fermi surface around the Γ point, and found two characteristic energy scales, at ∼40 and ∼270 meV. The former corresponds to the energy scale of the Debye temperature. As for the latter, we found that it is close to the cut-off energy ofthe calculated magnon density-of-states. This correspondence indicates that the energy scale is related to the magnetic excitation. I will also present our high-resolution photoemission measurements on the transition metal doped dichalcogenides system. TiS2 is proved to be a semiconductor with indirect gas around 600 meV. We confirmed that there is no CDW transition happen. Upon iron atoms intercalation, thestrong modification of the valence band structures and the band dispersion in the intercalated com-pound are observed. The hybridization of the S derived states with Fe 3d states is thought to bepredom- inantly the reason. The mechanism of these hybridized bands’ modification has been explained well by Vienna ab initio simulation program and the projected augmented wave poten-tials; the Perdew-Burke-Ernzerhof exchange correlation functional.

Finally I will present some of our latest photoemission work in Canadian Light Source Inc.

Primary author: CUI, xiaoyu (Canadian Light Source) Presenter: CUI, xiaoyu (Canadian Light Source) Session Classification: T1-3 Materials Characterization: Electrical, Optical, Magnetic, Ther- mal (DCMMP) / Caractérisation des matériaux: électrique, optique, magnétique et thermique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 76 2016 CAP Congr … / Report of Contributions Neutron scattering study of magn …

Contribution ID: 1057 Type: Oral (Non-Student) / orale (non-étudiant)

Neutron scattering study of magnetism in HoFeO3 Thursday, 16 June 2016 09:45 (15 minutes)

Rare-earth orthoferrites, RFeO3 where R is Y or rare earth elements with perovskite structure exhibit intriguing magnetic properties, including non-collinear structures and magnetic phase transitions due to a combination of antiferromagnetic (AFM) exchange interactions and Dzyaloshinsky- Moriya (DM) anti-symmetric exchange interactions, which make them promising candidates for innovative spintronic applications. Starting from the paramagnetic state at high temperatures, Fe3+ ions order antiferromagnetically at high temperatures (~600 K) [1]. With further cooling many rare-earth orthoferrites undergo spin-reorientation transitions where the direction of the net magnetic moment rotates from one crystallographic axis to another primarily due to the antisym- metric and anisotropic-symmetric exchange interactions between Fe3+ and R3+. Among different orthoferrites, HoFeO3 is of interest as optical measurements indicate the magnetic splitting of the crystal field (CF) ground state doublet of the Ho3+ ion is located directly in the antiferromagnetic– resonance frequencies of the Fe subsystem [2]. However a complete understanding of its magnetic properties including spin-reorientation transitions, exchange interactions among different magnetic ions, and the crystal field schemes for the lowest J-levels of the Ho3+ ions is still lacking. Here we report the results of our neutron scattering study of HoFeO3. Our inelastic experiments indicate the presence of at least three CF excitations below 30 meV at energy levels different from the indirect estimates obtained from heat capacity measurements. We also identify three temperatures associated with the Fe3+ spin-reorientation transitions in this material.

1. S. E. Hahn, A. A. Podlesnyak, G. Ehlers, G. E. Granroth, R. S. Fishman, A. I. Kolesnikov, E. Pomjakushina, and K. Conder, Phys. Rev. B 89 (2014) 01442. 2. A. M. Balbashov, G.V. Kozlov, S. P. Lebedev, A. A. Mukhin, A. Yu. Pronin, and A. S. Prokhorov, Sov. Phys. JETP 68 (1989) 629.

Primary author: YAMANI, zahra (CNL) Co-authors: Prof. RYAN, Dominic (Physics Department, McGill University); Prof. STEWART, Glen (UNSW, AUSTRALIA)

Presenter: YAMANI, zahra (CNL) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 77 2016 CAP Congr … / Report of Contributions Photoneutron calibration of Super …

Contribution ID: 1058 Type: Oral (Non-Student) / orale (non-étudiant)

Photoneutron calibration of SuperCDMS cryogenic dark matter detectors Thursday, 16 June 2016 10:15 (15 minutes)

A compelling set of diverse astrophysical observations points to the existence of dark matter, mo- tivating the quest for its direct detection. The most widely accepted dark matter candidates are weakly interacting massive particles (WIMPs). SuperCDMS, the advanced successor of the Cryo- genic Dark Matter Search, is designed to directly observe galactic WIMPs via keV-scale nuclear recoils in semiconductor detectors. The sensitivity to WIMPs depends on understanding the nuclear recoil energy scale. This understanding can be achieved by calibrating the detectors with photoneutron sources that emit quasi monoenergetic neutrons of known energy after nuclear excitation by hard gamma radiation. After a short introduction to the detection principle of SuperCDMS, Iwill describe the Sb/Be and Y/Be calibration sources and method applied to the Ge detectors. I will also present SuperCDMS photoneutron data taken at Soudan and summarize the status and plans for the photoneutron calibration efforts.

Primary author: Dr VON KROSIGK, Belina (University of British Columbia) Co-authors: Dr HSU, Lauren (FNAL); Dr OSER, Scott (University of British Columbia) Presenter: Dr VON KROSIGK, Belina (University of British Columbia) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 78 2016 CAP Congr … / Report of Contributions Doppler-shift lifetime measureme …

Contribution ID: 1059 Type: Oral (Non-Student) / orale (non-étudiant)

Doppler-shift lifetime measurements in 94Sr using the TIGRESS Integrated Plunger Tuesday, 14 June 2016 14:00 (15 minutes)

Neutron-rich Sr isotopes are characterized by a sudden onset of quadrupole deformation at neu- + tron number N = 60 demonstrated by the dramatic drop in excitation energy of the first 21 state. While theoretical calculations reproduce this onset of deformation qualitatively, they differ in the details of the deformation parameters and excitation energies. Though the emphasis is usually put on the sudden onset of collectivity at N = 60, it is equally surprising that there is no onset of collectivity when adding up to 8 neutrons beyond the N = 50 shell closure, which points to an amazing robustness of both the Z = 38 and Z = 40 proton (sub)-shell closures. This retardation of the onset of collectivity was first observed by Mach et al. [1] measuring extremely low B(E2) values of ≈ 10 W.u. in even-even Sr isotopes from 90Sr to 96Sr using the fast timing technique. These measurements have an uncertainty of ≈ 40% and are at the limit of the fast timing technique with lifetimes of ≈ 10 ps; a high precision lifetime measurement in 94Sr will elucidate whether the onset of collectivity is as sudden as generally assumed. Intense re-accelerated beams delivered by the ISAC-II facility at TRIUMF, Canada’s national laboratory for particle and nuclear physics, permit access to nuclear structure information for a wide range of radionuclides via in-beam gamma-ray spectroscopy with TIGRESS, a high-efficiency and Compton-suppressed segmented HPGe array. To take advantage of this opportunity, the TIGRESS Integrated Plunger (TIP) has been constructed at Simon Fraser University [2]. The TIP infrastructure supports Doppler-shift lifetime measurements via the Recoil Distance Method (RDM) using a 24-element TIP CsI(Tl) wall for charged-particle + → identification. An experiment aimed towards a high-precision (< 10%) measurement of the B(E2, 21 + 94 01 ) reduced transition probability in Sr was performed in December 2015 using inelastic scattering near the Coulomb barrier coupled with an RDM lifetime measurement of a radioactive 94Sr beam. A Geant4-based code for TIP is being developed as a tool to aid the analysis and for the optimization of future experiments. The device, experimental approach, analysis, and preliminary results will be presented and discussed. This work is presented on behalf of the TIP and TIGRESS collaborations. [1] Mach et al., Nucl. Phys. A 523 (1991) 197. [2] P. Voss et al., Nucl. Inst. and Meth. A 746 (2014) 87.

Primary author: CHESTER, Aaron (Simon Fraser University Department of Chemistry) Presenter: Prof. STAROSTA, Krzysztof (Simon Fraser University) Session Classification: T2-1 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 79 2016 CAP Congr … / Report of Contributions The phase diagram of the Blume- …

Contribution ID: 1060 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

The phase diagram of the Blume-Capel-Haldane-Ising spin chain Tuesday, 14 June 2016 13:45 (15 minutes)

We consider the one-dimensional spin chain for arbitrary spin s on a periodic chain with N sites, H = \sum_i^N ( a (S_i^z)^2 + b S_i^z S_{i+1}^z ),

the generalization of the chain that was studied by Blume and Capel. The Hamiltonian only involves the z component of the spin thus it is essentially an Ising model. The Hamiltonian also figures exactly as the anisotropic term in the famous model studied by Haldane of the largespin Heisenberg spin chain. Therefore we call the model the Blume-Capel-Haldane-Ising model. Al- though the Hamiltonian is trivially diagonal, it is actually not always obvious which eigenstate is the ground state. In this presentation we establish which state is the ground state for all regions of the parameter space and thus determine the phase diagram of the model. We observe the existence of massless soliton-like excitations and we show that the size of the solitons depends only on the ratio a/b and not on the number of sites N.

Primary authors: BOUDREAULT, Christian (Collège militaire royal de Saint-Jean / Université de Montréal); PARANJAPE, Manu (Université de Montréal); OWERRE, Solomon Akaraka Presenter: BOUDREAULT, Christian (Collège militaire royal de Saint-Jean / Université de Mon- tréal) Session Classification: T2-6 Condensed Matter Theory (DTP-DCMMP) / Théorie dela matière condensée (DPT-DPMCM)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 80 2016 CAP Congr … / Report of Contributions The importance of an accurate ma …

Contribution ID: 1061 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The importance of an accurate magnetic field for the estimation of Faraday rotation from total electron content. Monday, 13 June 2016 13:30 (15 minutes)

A plane polarized wave that propagates through a plasma, parallel to a magnetic field, suffers a gradual rotation of its plane of polarization called Faraday rotation. Likewise, radio beacon signals that traverse the ionospheric plasma encounter a parallel component of Earths geomagnetic field and the anisotropy of the medium. Many authors use the average value of the parallel magnetic field for estimation of Faraday rotation (FR) from ionospheric total electron content (TEC) measurements. Although it is known that the strength of Earth’s geomagnetic field varies slowly at ionospheric altitudes, a reference height characteristic value or reference mean value may not always be sufficient. though commonly used.

Numerical modelling has demonstrated that FR, independent of carrier frequency, can be calculated more accurately by applying a weighted average in favour of the ground based values when using an average value of the magnetic field. Values for the electron density from the International Reference Ionosphere (IRI) and magnetic field from the International Geomagnetic Reference Field (IGRF) were sampled for several different days at different latitudes. The TEC was computed from the convolution of the electron densities from IRI and magnetic field values from IGRF. The effect on the conversion of the modelled TEC to FR along vertical paths for different values of the magnetic field, including the average, reference altitude and weighted average. They were compared with the conversion using IGRF as a function of altitude as the ideal solution. For all conditions, an average value for the magnetic field tends to underestimate the degree of FR. This work foundthat a weighted average in favor of the magnetic field values from lower altitudes improved results.

Primary author: CUSHLEY, Alex Co-author: Dr NOËL, Jean-Marc (Royal Military College of Canada) Presenter: CUSHLEY, Alex Session Classification: M2-6 Theory, Modelling, and Forecasting II (DASP) / Théorie, mod- élisation et prévisions II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 81 2016 CAP Congr … / Report of Contributions Complex ordered phases of multib …

Contribution ID: 1062 Type: Invited Speaker / Conférencier invité

Complex ordered phases of multiblock copolymers Thursday, 16 June 2016 13:15 (30 minutes)

Self-assembly of multiblock copolymers presents a great opportunity to generate tailored polymeric materials with hierarchically ordered nano-scale domains. At the same time, the phase complexity of multiblock copolymers presents a great challenge to experimental and theoretical study of their phase behavior. Theoretically the self-consistent field theory (SCFT) provides a powerful framework for the study of inhomogeneous polymeric systems. In particular, many researchers have demonstrated that SCFT can be used to describe the phase behavior of block copolymers. Our recent research focuses on the development of theoretical and simulation methods for the prediction of block copolymer phases, resulting in a generic strategy to discover complex ordered phases of block copolymers within the SCFT framework. Specifically, the strategy utilizes a combination of real-space and reciprocal-space techniques to explore possible ordered phases that could be formed by multiblock copolymer melts, resulting in an array of candidate structures. A comparison of the free energy of the candidate phases can then be used to construct phase diagrams. Our extensive calculations have demonstrated that this strategy could be used to predict the formation of complex and hierarchically ordered phases from multiblock copolymers. In particular, application of this strategy to multiblock copolymers, including linear and star ABC triblock copolymers and BACBA pentablock copolymers, has led to the discovery and understanding of a rich array of ordered phases.

Primary author: SHI, An-Chang (McMaster University) Presenter: SHI, An-Chang (McMaster University) Session Classification: R2-1 Computational Condensed Matter (DCMMP) / Matière conden- sée numérique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 82 2016 CAP Congr … / Report of Contributions Dark matter with Vector-like Ferm …

Contribution ID: 1063 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Dark matter with Vector-like Fermions Wednesday, 15 June 2016 13:30 (15 minutes)

In this work we analyze the effects of introducing vectorlike leptons in the Higgs triplet model to provide a scenario that can explain both neutrino masses and provide a Dark Matter candidate, two essential shortcomings of the Standard Model. We investigate constraints, including the invisible decay width of the Higgs boson and the electroweak precision variables, and impose restrictions on model parameters. We analyze the effect of the relic density constraint on themass and Yukawa coupling of dark matter. We also calculate the cross sections for indirect and direct dark matter detection and show our model predictions for the neutrino and muon fluxes fromthe Sun, and the restrictions they impose on the parameter space. With the addition of vectorlike leptons, the model is completely consistent with dark matter constraints, in addition to improving electroweak precision and doubly charged mass restrictions, which are rendered consistent with present experimental data.

Primary authors: Prof. FRANK, Mariana (Concordia University); BAHRAMI, SAHAR (CONCOR- DIA UNIVERSITY)

Presenter: BAHRAMI, SAHAR (CONCORDIA UNIVERSITY) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 83 2016 CAP Congr … / Report of Contributions Is SmB6 the topological insulator o …

Contribution ID: 1064 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Is SmB6 the topological insulator or not ? Tuesday, 14 June 2016 19:18 (2 minutes)

We theoretically examined whether samarium hexaboride (SmB6) is topological insulator, or not. Despite the fact that the SmB6 has long been known as a topological Kondo insulator, with strong correlations and band hybridization, it is still of a great interest because of low-temperature transport anomalies which have recently been interpreted as evidence that SmB6 is a topological insulator. SmB6 behaves electronically at high temperatures like an insulator, and at low temperature its resistance mysteriously saturates. We studies de Haas van-Alphen quantum oscillation results to resolve the Fermi surface topology in this material. Although dHvA measurement may be consistent with two-dimensional conducting electronic states, we find an elongated 3D ellipsoidal Fermi surface . Furthermore, resistance measurement also can give some evidence of SmB6 topological surface states, by study different geometries to determine whether the conduction is dominated by the surface or the bulk. Another measurement is Scanning Tunneling Microscopy (STM) which use to discover the properties of the surface states with atomic spatial resolution.Finally, Angle- resolved photo-emission spectroscopy (ARPES), is another useful surface state probe directly the electronic structure of the (SmB6).

Primary author: Mrs ELFIED, Khawla (Memorial University of Newfoundland) Co-author: Prof. CURNOE, Stephanie (Memorial university of newfoundland) Presenter: Mrs ELFIED, Khawla (Memorial University of Newfoundland) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 84 2016 CAP Congr … / Report of Contributions Detection of Metastable Particles U …

Contribution ID: 1065 Type: Poster (Non-Student) / affiche (non-étudiant)

Detection of Metastable Particles Using Solid N2 at 10K Tuesday, 14 June 2016 19:04 (2 minutes)

Metastable particles produced in the interaction of electrons of carefully controlled energy with thermal gaseous target beams in a crossed beam set-up have been studied in the energy range from threshold to 300 eV. The e-beam is pulsed and the metastables produced drift to a solid nitrogen detector held at 10 K. Here they transfer their energy to states which radiate. The resultant photons are detected using a photomultiplier-filter combination. Time-of-flight techniques are usedto separate these photons from prompt photons produced in the initial electron collision. With N2 as both target and detection matrix, the emission is strongest in the green but still significant in the red spectral region. Excitation functions will be presented together with threshold measurements. These help to identify the metastable states being observed and the excitation mechanisms which are responsible. The authors thank NSERC and CFI, (Canada), for financial support.

Primary authors: Dr MCCONKEY, William (University of Windsor); Dr KEDZIERSKI, Wladek (University of Windsor)

Co-author: Ms ALSAIARI, Fatimah (University of Windsor) Presenter: Dr KEDZIERSKI, Wladek (University of Windsor) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 85 2016 CAP Congr … / Report of Contributions Conformal Bootstrap in Embeddin …

Contribution ID: 1066 Type: Oral (Non-Student) / orale (non-étudiant)

Conformal Bootstrap in Embedding Space Monday, 13 June 2016 16:15 (15 minutes)

We show how to obtain all conformal blocks from embedding space with the help of the operator product expansion. The minimal conformal block originates from scalar exchange in a four-point correlation functions of four scalars. All remaining conformal blocks are simple derivatives of the minimal conformal block. With the help of the orthogonality properties of the conformal blocks, the analytic conformal bootstrap can be implemented directly in embedding space, leading to a Jacobi-like definition of conformal field theories.

Primary authors: Prof. FORTIN, Jean-Francois (Laval University); Prof. SKIBA, Witold (Yale University)

Presenter: Prof. FORTIN, Jean-Francois (Laval University) Session Classification: M3-3 Fields and Strings (DTP) / Champs et cordes (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 86 2016 CAP Congr … / Report of Contributions The active ear: A ring of fire

Contribution ID: 1067 Type: Oral (Non-Student) / orale (non-étudiant)

The active ear: A ring of fire Tuesday, 14 June 2016 14:30 (15 minutes)

The vertebrate ear both responds to and emits sound. Sounds from the ear, known as otoacoustic emissions (OAEs), provide a means to probe the biophysics of auditory transduction and amplification. Spontaneous emissions (SOAEs) can also be present, appearing as coherent peaks in the spectral domain. Statistical properties of SOAEs, such as the “ring of fire” (observed via a 2-D histogram of the analytic signal of a filtered peak), provide compelling evidence for an “active” ear. Yet the underlying mechanisms are still not well understood. The present study focuses on the lizard ear, a relatively simple case that exhibits robust SOAE. The approach is two-fold. First, we develop a theoretical description that combines active nonlinear oscillators with both local and global coupling. This framework is explored computationally and solved in the time domain. Sec- ond, we report recent measurements from lizards that characterize the dynamics of SOAE activity in response to transient external stimuli (e.g., chirps and tone bursts), primarily a depression effect where SOAEs are reduced towards the noise floor. While the model captures some features ofthe data (e.g., the generation of distinct SOAE spectral peaks) but not others (e.g., SOAE bandwidths and the dynamic range of their response to stimuli), it provides insight into the depression effect. Specifically, SOAEs appear to undergo some combination of entrainment (i.e., synchronization to the external stimulus), suppression (i.e., pushed out of the limit cycle into a quiescent state), or a decoherence (i.e., loss of a clustered group effect that forms a peak).

Primary author: BERGEVIN, Christopher (York University) Presenter: BERGEVIN, Christopher (York University) Session Classification: T2-2 Nonlinear Dynamics (DPMB) / Dynamiques non linéaires (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 87 2016 CAP Congr … / Report of Contributions Nonlinear Optical Response of Arr …

Contribution ID: 1068 Type: Invited Speaker / Conférencier invité

Nonlinear Optical Response of Arrays of Metamolecules: New Observations and Ways of Enhancement Monday, 13 June 2016 13:00 (30 minutes)

Recent advances in nanofabrication made it possible to produce arrays of artificial structures (metamolecules) with good optical quality. This, in turn, enabled the observation of many unusual phenomena, such as invisibility cloaking, negative refraction, generation of beams with orbital angular momentum and other modifications to the polarization state of the incoming light. Of special importance is the nonlinear optical response of such arrays. Since there is a lot of flexibility in the choice of the materials and shapes of individual metamolecules, it is expected that the nonlinear optical properties of such arrays could be largely controlled and tailored. In this talk, we will be discussing two methods of such tailoring. One of the methods involves the resonant enhancement of the overall nonlinear optical response enabled by the coupling between the metamolecules in the arrays.

Another method of tailoring the nonlinear optical properties of an array of metamolecules relies on local-field effects. It has been recently shown that such effects are capable of inducingan additional contribution to a higher-than-the-lowest-order nonlinear optical response present in a material medium. This contribution is of cascaded nature: it relies on the multistep contribution of a lower-order nonlinearity to a higher-order susceptibility. When induced by local-field effects, such a cascading is of local nature: it occurs at the scale of the neighboring metamolecules forming the array. This unique feature distinguishes this effect from a better known macroscopic cascading. Microscopic cascading is a relatively new effect that has not been studied in detail yet. We present our resent efforts at identifying the conditions under which this effect could become the dominant contribution to a higher-order nonlinear optical susceptibility.

Primary author: Prof. DOLGALEVA, Ksenia (University of Ottawa) Co-author: Dr HUTTUNEN, Mikko (University of Ottawa) Presenter: Prof. DOLGALEVA, Ksenia (University of Ottawa) Session Classification: M2-3 Ultrafast and Time-Resolved Processes (DAMOPC) / Procédés ultrarapides et résolus dans le temps (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 88 2016 CAP Congr … / Report of Contributions The role of advanced dose calculat …

Contribution ID: 1069 Type: Invited Speaker / Conférencier invité

The role of advanced dose calculation methods in modern brachytherapy techniques Wednesday, 15 June 2016 08:30 (30 minutes)

Radiation therapy is used in the treatment of almost 50% of all cancers in industrialized countries. Over the years, advances in engineering, computer technology, material sciences and biology has enabled medical physicists to devise more accurate radiation delivery systems. One of the oldest forms of radiation therapy is brachytherapy, or originally called Curiethérapie in honor of Marie Curie. In brachytherapy one or more radiation sources are placed within or in close proximity of the tumor mass, thus spearing more easily normal tissues and limiting irradiation to a small area of the body. While medical imaging has been central to the new generation of brachytherapy systems currently available, it is but one of many enablers. In this presentation, we will underline the increasing role that advanced dose calculation methods, in particular the Monte Carlo, are playing in developing the next generation of treatments for cancer patients. This includes the design of new sources, the extraction of their dosimetric characteristics, the development of new applicators and better treatment planning and dose optimization algorithms. Looking forward, the Monte Carlo method will likely be central to the safe and accurate deployment of targeted therapies based on a combination of radioisotopes and nanomaterials. It could further play an important role in modeling the interaction physics, and ensuing chemical processes, of radiation with DNA and other cellular structures.

Primary author: BEAULIEU, Luc (Université Laval) Presenter: BEAULIEU, Luc (Université Laval) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 89 2016 CAP Congr … / Report of Contributions FTIR Synchrotron Spectroscopy of …

Contribution ID: 1070 Type: Oral (Non-Student) / orale (non-étudiant)

FTIR Synchrotron Spectroscopy of the Asymmetric C-H Stretching Bands of Methyl Mercaptan (CH3SH) – A Perplexity of Perturbations Monday, 13 June 2016 11:45 (15 minutes)

The infrared Fourier transform spectrum of the asymmetric C-H stretching bandsofCH3SH has been recorded in the 2950-3100 cm−1 region using synchrotron radiation at the FIR beamline of the Canadian Light Source in Saskatoon. Assignment of numerous torsion-rotation sub-bands for the asymmetric stretches has revealed a surprising pseudo-symmetric behavior, in which each band is seen in only one of the two possible ∆K selection rules. The upper states of the two asymmetric stretching vibrational bands thus appear to behave more like l = ±1 components of a degenerate E state of a symmetric top rather than distinct vibrational states. The two components are separated by about 1.5 cm−1 at K = 0, and then diverge linearly at higher K with torsional oscillation amplitude similar to that of the ground state of about 1.3 cm−1. The divergence is consistent with an a-type Coriolis splitting picture with an effective Coriolis constant ζ ≈ 0.075.

Primary author: Dr XU, Li-Hong (Physics Dept., University of NB) Co-authors: Mr THAPALIYA, Bishnu P. (Dept. of Chemistry, University of Akron); Dr BILLINGHURST, Brant E. (Canadian Light Source, University of Saskatchewan); Dr PERRY, David S. (Dept. of Chemistry, University of Akron); Mr REID, Elias M. (Physics Dept., University of NB); Dr DAWADI, Mahesh B. (Dept. of Chemistry, University of Akron); Dr LEES, Ronald M. (Physics Dept., University of NB); Dr TWAGIREYAZU, Sylvestre (Dept. of Chemistry, Brookhaven National Laboratory, Upton, NY)

Presenter: Dr XU, Li-Hong (Physics Dept., University of NB) Session Classification: M1-7 Atomic and Molecular Spectroscopy and Precision Measure- ments I (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision I (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 90 2016 CAP Congr … / Report of Contributions Integrated silicon photonics for qu …

Contribution ID: 1071 Type: Invited Speaker / Conférencier invité

Integrated silicon photonics for quantum communication Tuesday, 14 June 2016 13:45 (30 minutes)

The surging progress in silicon photonics over the past decade has been driven by its potential deployment in low cost, high bandwidth, wavelength-division multiplexed short reach optical in- terconnections in datacenters. Many device level advances have been made in recent years, and the variety of high quality components that have become available now motivate extending the application of silicon photonic integrated circuits to quantum information.

In this talk, I will present my group’s recent work on silicon photonics for quantum communication. I will describe high extinction ratio microring modulators and filters, the first polarization rotator- splitters and controllers in standard silicon photonic platforms, and a prototype of an integrated quantum key distribution transmitter for the BB84 protocol.

Primary author: POON, Joyce (University of Toronto) Presenter: POON, Joyce (University of Toronto) Session Classification: T2-5 Photonics I: Applications (DAMOPC-DPP) / Photonique I : applications (DPAMPC-DPP)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 91 2016 CAP Congr … / Report of Contributions Formation and Evaporation of No …

Contribution ID: 1072 Type: Oral (Non-Student) / orale (non-étudiant)

Formation and Evaporation of Nonsingular Black Holes in New 2d Gravity Wednesday, 15 June 2016 16:15 (15 minutes)

I will first briefly review the key features of the black hole information loss paradox andthefamous “firewall” resolution of Almheiri, Marolf, Polchinski and Susskind. I will then go on todescribe work on a different, considerably more mundane solution to the problem based on the observation that the singularity at the center of all black holes lies at the heart of the information loss conundrum. Specifically, I will present a new class of 2D effective actions that can be used to describe the formation and evaporation of non-singular black holes. We are currently completing numerical calculations that will hopefully show that the usual event horizon of the black holes in these theories is replaced by a compact trapping horizon that allows the information to emerge gradually as the black hole evaporates, thereby potentially solving the information loss conundrum.

Primary author: KUNSTATTER, Gabor (University of Winnipeg) Presenter: KUNSTATTER, Gabor (University of Winnipeg) Session Classification: W3-5 Cosmology and Astrophysics (DTP-DIMP-PPD) / Cosmologie et astrophysique (DPT-DPIM-PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 92 2016 CAP Congr … / Report of Contributions Electron-Transfer-Based Combina …

Contribution ID: 1073 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Electron-Transfer-Based Combination Therapy of Cisplatin with a Molecular Promoter for Cancer Treatment Wednesday, 15 June 2016 10:00 (15 minutes)

Cisplatin is a very widely used platinum-based chemotherapy drug and is the cornerstone agent in treating a variety of cancers, including ovarian cancer, testicular cancer, cervical cancer, bladder cancer, lung cancer, head and neck cancer, lymphoma, and brain tumors. It is one of the few curative anticancer agents. However, its clinical application is often limited by severe toxic side effects and resistance possessed by various cancers. Our group has recently, through the femtomedicine approach, unraveled a new molecular mechanism of cisplatin. We found that cisplatin is extremely effective for the dissociative electron transfer (DET) reaction [1,2] to produce a reactive radical that causes DNA strand breaks, apoptosis and final clonogenic cell kill. Based on this DET mechanism, it is proposed that cisplatin may be administered in combination with a biological electron donor PM to enhance the chemotherapeutic efficacy. We have obtained promising results in in vitro tests of a few combinations. Through cell survival experiments, MTT assays and clonogenic assays, it has been shown that our proposed combinations significantly enhance the cell-killing on cancer cells, but surprisingly, not on normal cells. Besides, γ-H2AX staining on treated cells indicates that more double strand breaks can be induced using our combination. In addition, measurements on caspase 3/7 activity clearly show an enhancement in the population of apoptotic cells using our combination. Xenograft mouse models have also proved the anti-cancer effect of our combination. Furthermore, spectroscopic measurement has confirmed the electron transfer reaction between cisplatin and PM. These results show great potential of the DET mechanism to improve the therapy of cancer using cisplatin. [1] Lu, Q.-B., Kalantari, S., and Wang, C.-R. (2007) Electron transfer reaction mechanism of cisplatin with DNA at the molecular level. Mol. Pharm. 4, 624–8.

[2] Lu, Q.-B. (2007) Molecular reaction mechanisms of combination treatments of low-dose cisplatin with radiotherapy and photodynamic therapy. J. Med. Chem. 50, 2601–4.

Primary author: ZHANG, Qinrong (University of Waterloo) Co-authors: Ms WARRINGTON, Jenny (University of Waterloo); Ms OU, Ning (University of Wa- terloo); Prof. LU, Qing-Bin (University of Waterloo) Presenter: ZHANG, Qinrong (University of Waterloo) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 93 2016 CAP Congr … / Report of Contributions The Moyal Equation for open qua …

Contribution ID: 1074 Type: Oral (Non-Student) / orale (non-étudiant)

The Moyal Equation for open quantum systems Monday, 13 June 2016 13:30 (30 minutes)

We generalize the Moyal equation, which describes the dynamics of quantum observables in phase space, to quantum systems coupled to a reservoir. It is shown that phase space observables become functionals of fluctuating noise forces introduced by the coupling to the reservoir. For Markovian reservoirs, the Moyal equation turns into a functional differential equation in which the reservoir’s effect can be described by a single parameter.

Primary author: MARZLIN, Karl-Peter (St. Francis Xavier University) Co-author: Mr DEERING, Stephen (Carleton University) Presenter: MARZLIN, Karl-Peter (St. Francis Xavier University) Session Classification: M2-4 Mathematical Physics (DTP) / Physique mathématique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 94 2016 CAP Congr … / Report of Contributions GPS phase scintillation during the …

Contribution ID: 1075 Type: Oral (Non-Student) / orale (non-étudiant)

GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents Wednesday, 15 June 2016 14:00 (15 minutes)

Ionospheric irregularities cause rapid fluctuations of radio wave amplitude and phase that can degrade GPS positional accuracy and affect performance of radio communication and navigation systems. The ionosphere becomes particularly disturbed during geomagnetic storms caused by impacts of coronal mass ejections compounded by high-speed plasma streams from coronal holes. Geomagnetic storm of March 17, 2015 was the largest in the current solar cycle. The high-latitude ionosphere dynamics is studied using arrays of ground-based instruments including Global Nav- igation Satellite System (GNSS) receivers, HF radars, ionosondes, riometers and magnetometers. The phase scintillation index is computed for L1 signal sampled at the rate of up to 100Hzbyspe- cialized GNSS scintillation receivers of the Expanded Canadian High Arctic Ionospheric Network (ECHAIN) and the Norwegian Mapping Authority network supplemented by additional GNSS receivers operated by other institutions. To further extend the geographic coverage, the phase scintillation proxy index is obtained from geodetic-quality GPS data sampled at 1 Hz. In the context of solar wind coupling to the magnetosphere-ionosphere system, it has been demonstrated that GPS phase scintillation is primarily enhanced in the cusp, tongue of ionization (TOI) broken into patches drawn into the polar cap from the dayside storm-enhanced plasma density (SED) and in the auroral oval during energetic particle precipitation events, substorms and pseudo-breakups in particular. In this paper we examine the relation to auroral electrojet currents observed by arrays of ground-based magnetometers and energetic particle precipitation observed by DMSP satellites. Equivalent ionospheric currents (EICs) are obtained from ground magnetometer data using the spherical elementary currents systems (SECS) technique (Amm and Viljanen, Earth Planets Space, 51, 431–440, 1999) that has been applied over the entire North American ground magnetometer network (Weygand et al., J. Geophys. Res., 116, A03305, 2011).

Primary author: PRIKRYL, P. (Physics Department, University of New Brunswick, Fredericton, NB; Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada)

Co-authors: DANSKIN, D. W. (Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada); THOMAS, E. G. (Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, USA); RUOHONIEMI, J. M. (Bradley Department of Electrical and Computer Engineer- ing, Virginia Tech, Blacksburg, VA, USA); WEYGAND, J. M. (Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA); OKSAVIK, K. (Birkeland Centre for Space Science, Department of Physics and Technology, University of Bergen, Bergen, Norway; The Univer- sity Centre in Svalbard, Longyearbyen, Norway); JACOBSEN, K. S. (Norwegian Mapping Authority, Hønefoss, Norway); AQUINO, M. (Nottingham Geospatial Institute, University of Nottingham, Not- tingham, UK); CONNORS, M. (Athabasca University, Edmonton, AB, Canada); JAYACHANDRAN, P. T. (Physics Department, University of New Brunswick, Fredericton, NB, Canada); GHODDOUSI-- FARD, R. (Canadian Geodetic Survey, Natural Resources Canada, Ottawa, ON, Canada); DURGONICS, T. (Technical University of Denmark, National Space Institute, Kongens Lyngby, Denmark); SREEJA, V. (Nottingham Geospatial Institute, University of Nottingham, Nottingham, UK); ANDALSVIK, Y. L.

September 29, 2021 Page 95 2016 CAP Congr … / Report of Contributions GPS phase scintillation during the …

(Norwegian Mapping Authority, Hønefoss, Norway); ZHANG, Y. (Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA)

Presenter: PRIKRYL, P. (Physics Department, University of New Brunswick, Fredericton, NB; Geo- magnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada) Session Classification: W2-3 Remote Sensing (DASP) / Détection à distance (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 96 2016 CAP Congr … / Report of Contributions Canada’s Triad of Atmospheric Sp …

Contribution ID: 1076 Type: Invited Speaker / Conférencier invité

Canada’s Triad of Atmospheric Space Instruments: A 21st Century Success Story Wednesday, 15 June 2016 13:15 (30 minutes)

18th December, 1999, February 20th, 2001 and 12th August, 2003 marked the launch dates of three Canadian atmospheric experiments: MOPITT, Odin/OSIRIS and SciSat/ACE. These three satellites, launched in the space of less than four years share another enviable characteristic: They are all still working after 13-16 years and between them they have accumulated over 45 years of on-orbit operating time. Not bad for missions whose planned lifetime ranged from 2-5 years! The instruments of these missions all operate by sensing electromagnetic radiation, but differin the instrumentation used to analyse the radiation. MOPITT uses correlation radiometry, OSIRIS uses a grating spectrometer and the ACE instruments use a Fourier transform spectrometer and a grating spectrometer. The differing techniques are suited to the atmospheric components and altitude ranges targeted by these instruments. These global space-based measurements tackle some of the most significant atmospheric issues facing humanity today: ozone and atmospheric pollution, but also provide measurements relevant to climate change. After their several decades of operation each of them has a story to tellof atmospheric discoveries and new science. MOPITT has given us a global picture of lower atmosphere pollution transport showing how carbon monoxide is changing over the planet and is influenced by El Nino, industrialisation and perhaps even the state of the world economy. Over the past fifteen years OSIRIS has provided international climate scientists with a highreso- lution view of both the changing vertical distribution of ozone and the increase of stratospheric sulphate particles that result from volcanic eruptions and that cause noticeable surface cooling. ACE has provided the most comprehensive view of composition of the Earth’s atmosphere including measurements of more than 50 trace gases and isotopologues. It was designed to monitor the recovery of the ozone layer and was the first to measure CFC-113, HCFC-142b, HFC-134a, COClF, COCl2, and HFC-23 from orbit.

Financing for these instruments was provided by the Canadian Space Agency but many other agencies and organisations have also provided funding and support. We also acknowledge that the success of these instruments is due to the dedication and hard work of many people over several decades.

Primary author: DRUMMOND, james (Dalhousie University) Co-authors: Prof. DEGENSTEIN, Douglas (University of Saskatchewan); Prof. WALKER, Kaley (University of Toronto); Prof. BERNATH, Peter (Old Dominion University) Presenter: DRUMMOND, james (Dalhousie University) Session Classification: W2-3 Remote Sensing (DASP) / Détection à distance (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 97 2016 CAP Congr … / Report of Contributions All-Atoms simulations of Hunting …

Contribution ID: 1077 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

All-Atoms simulations of Huntingtin’s N-terminal: solvent and membrane effects Monday, 13 June 2016 17:00 (15 minutes)

The Huntingtin protein has drawn considerable attention as its aggregation into amyloid fibrilsis related to the Huntington disease, a neurodegenerative disease characterized by motor and emo- tional dysfunctonalities and the loss of cognitive functions. Of its 3000 plus residues, attention has focused mostly on the first exon of Huntingtin, composed of a amphipatic region of 17 aminoacids (Htt17), a polyglutamine repeat domainN (Q ) and a proline rich domain (C38), that modulates its aggregation and localization within the cell. The Htt17 segment is particularly important because it serves as a membrane anchor that could accelerate the fibrilation process. Following recent solution and solid-state NMR experiments that unveiled Htt17’s structure and orientation in micelles and POPC bilayer [1], we refine these experimental finds using a state-of- the-art approach combining molecular dynamics (MD), Hamiltonian replica exchange (HREX) and Metadynamics (MetaD). We focus primarily on the characterization of the dynamics and thermodynamics of Htt17 in solution and in a phospholipid bilayer. In solution, we find that Htt17 samples a broad ensemble of alpha-helix, coil and two-helix bundle structures in agreement with NMR chemical shifts. The addition of theQN domain shifts the helical propensity from the amino terminus to the carboxy terminus. Finally, the addition of a polyproline domain stabilizes the helical conformation. Many of the observed structural features could play a crucial role in the aggregation or in the interaction with the membrane [2]. In the phospholipid bilayer, we find that Htt17 could be more structured than the proposed NMR model. Htt17 leads to local deformation of the membrane due to the extension of the neighbor phospholipid acyl chains to cover its nonpolar surface These deformations were shown to promote dimerization of the inserted peptide and could favor the formation of large aggregates [3].

1. Michalek, M. et al. (2013). Biophysical journal, 105(3), 699-710 2. Côté, S. et al. (2015). Biophysical Journal, 108(5), 1187-1198 3. Binette, V. et al. (2016). Biophysical Journal (In press)

Primary author: BINETTE, Vincent (Université de Montréal) Co-authors: Prof. MOUSSEAU, Normand (Université de Montréal); Dr CÔTÉ, Sébastien (Université de Montréal)

Presenter: BINETTE, Vincent (Université de Montréal) Session Classification: M3-6 Computational Biophysics: Methods and Concepts (DPMB) / Biophysique numérique : méthodes et concepts (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 98 2016 CAP Congr … / Report of Contributions A link between high-speed solar w …

Contribution ID: 1078 Type: Oral (Non-Student) / orale (non-étudiant)

A link between high-speed solar wind streams and extratropical cyclones Monday, 13 June 2016 11:15 (15 minutes)

Databases of extratropical-cyclone tracks obtained from two meteorological reanalysis datasets are used in superposed epoch analysis of time series of solar wind plasma parameters and green coronal emission line intensity. The time series are keyed to times of maximum growth ofexplo- sively developing extratropical cyclones during northern and southern winters. The new statistical evidence corroborates the previously published results (Prikryl et al., Ann. Geophys., 27, 1-30, 2009). This evidence shows that explosive extratropical cyclones tend to occur after arrivals ofsolar wind disturbances such as high-speed solar wind streams from coronal holes when large amplitude magneto-hydrodynamic waves couple to the magnetosphere-ionosphere system. These MHD waves modulate Joule heating and/or Lorentz forcing of the high-latitude thermosphere generating medium-scale atmospheric gravity waves. Ray tracing of aurorally-generated gravity waves show that the gravity waves propagate upward and downward through the atmosphere. Simulations of gravity wave propagation in a model atmosphere using the Transfer Function Model (TFM) (Mayr et al., Space Sci. Rev., 54, 297–375, 1990) show that propagating waves originating in the thermosphere can excite a spectrum of gravity waves in the lower atmosphere. At the tropospheric level, in spite of significantly reduced amplitudes, they can provide a lift of unstable air to release the moist symmetric instability thus initiating slantwise convection and forming cloud/precipitation bands (Prikryl et al., Ann. Geophys., 27, 31-57, 2009). The release of latent heat is known to provide energy for rapid development and intensification of extratropical cyclones. It is observed that severe winter storms caused by low pressure systems tend to follow arrivals of high-speed solar wind.

Primary author: PRIKRYL, Paul (Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON; Physics Department, University of New Brunswick, Fredericton, NB, Canada)

Co-authors: MULDREW, Donald B. (Emeritus, Communications Research Centre, Ottawa, ON, Canada); IWAO, Koki (National College of Technology, Kumamoto College, Yatsushiro, Japan); RYBAN- SKÝ, Milan (Slovak Central Observatory, Hurbanovo, Slovakia); BRUNTZ, Robert J. (Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA); TSUKIJIHARA, Takumi (Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan); RUŠIN, Vojto (Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica, Slovakia)

Presenter: PRIKRYL, Paul (Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON; Physics Department, University of New Brunswick, Fredericton, NB, Canada) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 99 2016 CAP Congr … / Report of Contributions Neutrino-less double beta decay se …

Contribution ID: 1080 Type: Invited Speaker / Conférencier invité

Neutrino-less double beta decay search with EXO-200 and nEXO Monday, 13 June 2016 10:30 (30 minutes)

The Enriched Xenon Observatory (EXO) is an experimental program designed to search forthe neutrinoless double beta decay of 136Xe. Observation of this decay would prove that neutrinos are massive Majorana particles (i.e. they are their own anti-particles), and constitute physics beyond the Standard Model. The first phase experiment, called EXO-200, has re-started operation atthe WIPP mine in New Mexico, USA, using 200 kg of liquid xenon enriched to 80% in 136Xe in an ultra-low background time-projection chamber (TPC). The detector performance and response has been thoroughly tested and is well understood. With the EXO-200 detector sensitive searches for neutrinoless and two neutrino double beta decays have been performed along with searches for exotic decay modes and decays to excited states. Some of these searches provided the most stringent limits on these decay modes. In parallel to the operation of EXO-200, the development of nEXO, a next-generation liquid xenon TPC has started. The nEXO detector will consist of 5T enriched xenon and will be deployed at a selected underground laboratory, ideally the SNOLab facility in Sudbury. Advanced detection technologies are being developed to read out charge and scintillation signals from the xenon TPC, such as charge readout tiles and Si photo multipliers, respectively. With these technologies and the increased target mass, the nEXO detector has the potential to completely probe the inverted neutrino-mass scale.

The status of the EXO-200 detector, detector performance, and analysis techniques applied to achieve the current results will be discussed. In addition, current design efforts for the future multi-ton experiment nEXO will be discussed.

Primary author: BRUNNER, Thomas (McGill University) Presenter: BRUNNER, Thomas (McGill University) Session Classification: M1-4 Neutrinoless Double Beta Decay I (PPD-DNP-DTP) / Double désintégration beta sans neutrino I (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 100 2016 CAP Congr … / Report of Contributions Numerically Obtaining the Black H …

Contribution ID: 1081 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Numerically Obtaining the Black Hole Universality Class Tuesday, 14 June 2016 09:30 (15 minutes)

I will discuss methods to find and extract critical exponents from numerical black holes. Thispro- cedure is nontrivial because numerically we compute only the temperature and entropy; assumptions will be made about the complete thermodynamical description via a First Law and Smarr Relation, and tools such as Padé Approximants will be examined. This procedure will be quite general, allowing for utility in scenarios ranging from higher curvature theories to anisotropic solutions.

Primary author: BRENNA, Wilson (University of Waterloo) Co-author: MANN, Robert (University of Waterloo) Presenter: BRENNA, Wilson (University of Waterloo) Session Classification: T1-8 General Relaivity (DTP) / Relativité générale (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 101 2016 CAP Congr … / Report of Contributions Improve Determination of ⁹⁹Tc in …

Contribution ID: 1082 Type: Oral (Non-Student) / orale (non-étudiant)

Improve Determination of ⁹⁹Tc in Environmental Samples by ICP-MS using TRU® Resin Thursday, 16 June 2016 09:15 (15 minutes)

Technetium-99 (⁹⁹Tc) is one of the most important fission products of ²³⁵U (~6% yield). It is along lived radioisotope (2.11X10⁵ years half-life), which decays by emiting beta radiation. ⁹⁹Tc is of environmental concern because it is very mobile in the environment as Tc(VII) (TcO₄⁻)and can be bio-accumulated in some plants and animals. ⁹⁹Tc can be measured by ICP-MS, but ruthenium (Ru) (⁹⁹Ru⁺) and molybdenum (Mo) (⁹⁸Mo¹H⁺) interfere and have to be chemically removed. ⁹⁹Tc is frequently purified from these interferents using an anion exchange or TEVA® resin. Themain issue regarding these resins is that ⁹⁹Tc is eluted with a high acid concentration solution, which cannot be directly introduced into an ICP-MS without causing corrosion issues. The acid solution has to be evaporated, but Tc(VII) is partially volatile in acidic solutions. Also, there is no adequate long-lived Tc isotope that could be used as a tracer to correct the recovery losses.

We have demonstrated that ⁹⁹Tc can be rapidly and selectively extracted on a TRU resin. It can be easily eluted from the resin using near boiling water, a solvent compatible with ICP-MS instrument. Rhenium (VII) (Re) has a similar chemical behavior to Tc(VII) on the resin in some conditions and can be used as a recovery tracer. Ru and Mo interferents can be removed effectively. A method was developed to determine ⁹⁹Tc in environmental waters. ⁹⁹Tc was pre-concentrated from a 1 L water sample using an anion exchange resin and then purified with a TRU® resin. There wasno heating step for this method.

Primary author: GUÉRIN, Nicolas (Canadian Nuclear Laboratories) Co-authors: CORNETT, Jack (University of Ottawa); DE SILVA, Nimal (University of Ottawa); RI- OPEL, Remi (Canadian Nuclear Laboratories); KRAMER-TREMBLAY, Sheila (Canadian Nuclear Labo- ratories); DAI, Xiongxin (China Institute for Radiation Protection) Presenter: GUÉRIN, Nicolas (Canadian Nuclear Laboratories) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 102 2016 CAP Congr … / Report of Contributions Alteration of Bacterial Cell Elemen …

Contribution ID: 1083 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Alteration of Bacterial Cell Elemental Concentrations by Environmental Influences as Determined by Laser-Induced Breakdown Spectroscopy Tuesday, 14 June 2016 19:08 (2 minutes)

There is an urgent demand from many sectors (health, environmental safety, security, andfood- processing) for a diagnostic test to rapidly and accurately identify bacterial pathogens. In recent years, it has been shown that laser-induced breakdown spectroscopy (LIBS) can provide a real- time bacterial cell elemental assay. On the basis of this assay, sensitive and specific discrimination between bacterial specimens at both the species and strain levels is possible.

In this work we investigated the impact of the elemental content of the growth environment on the LIBS spectral signature obtained from bacterial cells with a focus on three specific variables. Growth media used for cultures of E. coli were intentionally doped with zinc, magnesium, and glucose in varying concentrations prior to cell growth. The range of concentrations was chosen to allow both an investigation of extreme environments and also an investigation of fairly low-concentration environments that would typically be encountered in physiological (i.e. in the human body) and environmental settings. The spectra obtained from doped cells were compared to those of the same species grown in an unaltered tryptic soy agar medium to assess potential cell alteration. This study is highly relevant for the use of LIBS on cells obtained fromamedical specimen for infection diagnosis as well on cells obtained from an environmental setting for use as a diagnostic of water or soil contamination.

Primary authors: MALENFANT, Dylan (University of Windsor); Mr DOSHI, Siddharth (Vellore Institute of Technology)

Co-author: REHSE, Steven (University of Windsor) Presenter: MALENFANT, Dylan (University of Windsor) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 103 2016 CAP Congr … / Report of Contributions Simultaneous Determination of Th …

Contribution ID: 1084 Type: Oral (Non-Student) / orale (non-étudiant)

Simultaneous Determination of Th and U in Urine by ICP-MS Tuesday, 14 June 2016 09:15 (15 minutes)

²³²Th is expected to be the major internal dose contributor for nuclear workers in the development of new Th fuels. Since new fuels are usually processed in the same facilities as U fuel ishandled,U might also be a significant internal dose contributor. The development of rapid and sensitive analytical methods for the determination of these elements at the levels observed in bioassay samples such as urine is needed. Inductively coupled plasma mass spectrometry (ICP-MS) allows for fast and sensitive detection of these long-lived radionuclides. However, urine contains a significant amount of dissolved salts, organic matter, and suspended particles, which prevent the direct measurement of Th and U by ICP-MS. The traditional purification method for U consists indirectly passing an acidified urine sample through an extraction chromatography (EXC) resin; however, this rapid method resulted in inconsistent and poor recoveries for Th.

We have demonstrated that the salinity, ligands and suspended particles of urine were hindering the extraction of Th on UTEVA resin without significantly affecting U extraction. A calciumphos- phate coprecipitation was first done to remove most of the interferents. Then, the precipitate was dissolved in 8M HNO₃ and the solution oxidized. The solution was passed through a UTEVA resin and the actinides were eluted with 5 mL of a dilute acidic solution. Using this method, a high and consistent recovery was obtained with a low detection limit of 80 and 230 pg•L⁻¹ for ²³²Th and ²³⁸U, respectively.

Primary author: Dr GUÉRIN, Nicolas (Canadian Nuclear Laboratories) Co-authors: Mrs GALE-MOULDEY, Alexandra (Carleton University); Mr GAGNÉ, Alexandre (Cana- dian Nuclear Laboratories); Ms KRAMER-TREMBLAY, Sheila (Canadian Nuclear Laboratories); Dr DAI, Xiongxin (China Institute for Radiation Protection)

Presenter: Mr GAGNÉ, Alexandre (Canadian Nuclear Laboratories) Session Classification: T1-7 Mass spectrometry in nuclear waste management and control at the border (DIAP-DIMP) / Spectrométrie de masse dans la gestion des déchets nucléaires et surveillance à la frontière (DPIA-DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 104 2016 CAP Congr … / Report of Contributions The New Research Injection Line a…

Contribution ID: 1085 Type: Oral (Non-Student) / orale (non-étudiant)

The New Research Injection Line at the André E. Lalonde AMS Laboratory, University of Ottawa Wednesday, 15 June 2016 08:30 (15 minutes)

In Accelerator Mass Spectrometry (AMS), research into new analytical technologies, the development of new applications, as well as the improvement of existing techniques frequently requires extensive experimental time using ion sources and their associated low energy analytical equipment. To support our research and development program at the André E. Lalonde AMS Laboratory, we are completing a second injection line, which can be connected through to the accelerator and the high energy analysis and detector systems when required. However, it can also be used on a stand-alone basis for low energy experimental work while production analytical work continues on the original injection line. The new line will incorporate two ion sources: one a duplicate of the source on the original line and a second, an upgrade of the SIMS (secondary ion mass spectrometry) source that was used at IsoTrace in Toronto. Either of the sources can be switched into the remainder of the injection line through an electric analyzer with plates that can be rotated, without breaking vacuum, to accept the beam from either source. This analyzer is followed by a 90° magnet with the ability to use electric switching to select nearby isotopes of the element of interest. The magnet is followed by a beam diagnostic box and space for the integration ofa pre-commercial version of the Isobar Separator for Anions (ISA)[1]. The ISA[2] uses ion-gas collisions to preferentially remove unwanted isobars while transmitting the isotope of interest; theeV level energies necessary for these interactions require the use of radio-frequency quadrupole ion guides to reduce the effects of scattering and space charge. Following the ISA location arefurther beam conditioning elements and a 45° magnet for beam analysis during stand-alone operation. In addition to the development work on the ISA, this line will be used for research into improved and new ion source technology. As an example of work that will be done on this line, data obtained using an earlier version of the ISA to separate the isobars Yttrium and Zirconium for the analysis of Strontium will be discussed. More recent work on the development of suitable ion source materials for the analysis of 90Sr will also be presented.

1. Designed and built by Isobarex Corp, Bolton, Ontario - J-F Alary, G. Javahery, W. Kieser, X-L Zhao, A.E. Litherland L. Cousins, C. Charles Isobar Separator for Anions: Current Status, Nuclear Instruments and Methods B 361 (2015) 197-200 2. A.E. Litherland, I. Tomski, X.-L. Zhao, L. M. Cousins, J.P. Doupé, G. Javahery, W.E. Kieser, Isobar separation at very low energy for AMS, Nuclear Instruments and Methods B 259 (2007) 230-235

Primary author: Prof. KIESER, William (Lalonde AMS Lab, Dept of Physics, uOttawa) Co-authors: Dr CHARLES, Christopher (Lalonde AMS Lab, Dept of Earth Sciences, uOttawa); Mr ST-JEAN, Normand (Lalonde AMS Lab, Dept of Earth Sciences, uOttawa); Dr ZHAO, Xiaolei (Lalonde AMS Lab, Dept of Physics, uOttawa)

Presenter: Prof. KIESER, William (Lalonde AMS Lab, Dept of Physics, uOttawa) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

September 29, 2021 Page 105 2016 CAP Congr … / Report of Contributions The New Research Injection Line a…

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 106 2016 CAP Congr … / Report of Contributions Photon-in Photon-out Spectroscop …

Contribution ID: 1087 Type: Invited Speaker / Conférencier invité

Photon-in Photon-out Spectroscopy of Functional Materials using Synchrotron Radiation Tuesday, 14 June 2016 08:30 (30 minutes)

Using a phosphor to “see” X-rays is as old as the discovery of X-rays and is practiced everyday worldwide. The advent of maturing third generation synchrotron light source technology has made it possible to conduct investigations of X-ray excited optical luminescence (XEOL)from solid in both energy and time domain in much greater details than ever before. In parallel with this development are the advancement of optics and detectors, making it possible to provide energy resolution to an unprecedented level. This together with the brightness of theSR source has made the previously difficult experiments such as high resolution X-ray emission/ resonant inelastic X-ray scattering nearly routine. In this talk, I’ll describe some of these developments and their implications.

Primary author: Prof. SHAM, Tsun (Western University) Presenter: Prof. SHAM, Tsun (Western University) Session Classification: T1-3 Materials Characterization: Electrical, Optical, Magnetic, Ther- mal (DCMMP) / Caractérisation des matériaux: électrique, optique, magnétique et thermique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 107 2016 CAP Congr … / Report of Contributions Simultaneous PET/MRI with Clini …

Contribution ID: 1088 Type: Invited Speaker / Conférencier invité

Simultaneous PET/MRI with Clinical and Preclinical Systems Thursday, 16 June 2016 10:00 (30 minutes)

In our experiences with simultaneous PET/MRI (Siemens Biograph mMR), we have seen several inherent advantages beyond improved anatomical information. In the heart, for example, new insight can be gained when fusing cine, gadolinium-enhanced, and relaxation time mapping MRI with PET tracers sensitive to glycolysis (¹⁸F-FDG), perfusion (¹³N-ammonia), or sympathetic innervation (¹¹C-HED). Simultaneous PET/MRI with combined contrast infusions of both MRI and PET tracers may help improve pharmacokinetic modeling in tissue. Simultaneity can also be used to retrospectively correct PET data for motion and partial volume effects based on information derived from the MRI. Efforts at Lawson to improve the quantitative accuracy of clinical PET/MRI have also included improvements to MR-based attenuation corrections, multi-site phantom measurements, and implementation of novel, PET-compatible, 32-channel RF coils designed specifically for the Siemens Biograph mMR. For PET images, the Biograph mMR performs better than most clinical PET systems, with a spatial resolution of 4.3 mm in the centre of its field-of-view and a peak sensitivity of 1.5%. In contrast, small animal PET systems can achieve <1 mm resolution with >5% peak sensitivity. The entire brain of an adult mouse is ~ 400 μL in volume. In order to develop novel PET tracers and perform imaging studies with small animal models that are comparable to our clinical 3T PET/MRI, a truly simultaneous, preclinical PET/MRI system capable of sub-millimeter spatial resolution is required. We have been working with industry and academic partners, led by Dr. Andrew Goertzen at the University of Manitoba, to develop a high-resolution PET insert designed to operate in a preclinical MRI. This technology has been licensed by a Canadian company (Cubresa, Winnipeg) whowill deliver the first commercially available, preclinical PET/MRI insert to Lawson in the first halfof 2016. Although it will initially be installed in our clinical 3T PET/MRI, this system is small enough (113 mm outer diameter) to operate simultaneously in most high-field preclinical MRI systems. The design and initial results from this system will be presented.

Acknowledgements: NSERC, ORF, Mitacs, Siemens Canada, Cubresa, MMI, and the Lawson Interal Research Fund.

Primary author: THIESSEN, Jonathan (Lawson Health Research Institute) Presenter: THIESSEN, Jonathan (Lawson Health Research Institute) Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 108 2016 CAP Congr … / Report of Contributions A generalized model of repeated q …

Contribution ID: 1089 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

A generalized model of repeated quantum interactions Tuesday, 14 June 2016 14:15 (15 minutes)

We study the different scenarios that repeated quantum interactions between a system Sandan ancillary system Sm induces on the former. These latter systems play the role of measurement devices, or meters. Distinct dynamics emerge depending on various limits that can be taken for the ancillae. Of special interest is the case where induced effective interactions between subsystems of acom- posite system arise due to their repeated interactions with a common set of meters, which we use to investigate the possibility of describing gravity as a classical channel, or in other words, that gravity arises as an effective force that cannot transmit quantum information.

Primary authors: ZYCH, Magdalena (University of Queensland); ALTAMIRANO, Natacha (Uni- versity of Waterloo); CORONA UGALDE, Paulina (University of Waterloo); MANN, Robert (University of Waterloo)

Presenter: CORONA UGALDE, Paulina (University of Waterloo) Session Classification: T2-7 Gravity, Astrophysics and Cosmology (DTP) / Gravité, astrophysique et cosmologie (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 109 2016 CAP Congr … / Report of Contributions Testing Landauer’s Principle in a F …

Contribution ID: 1090 Type: Invited Speaker / Conférencier invité

Testing Landauer’s Principle in a Feedback Trap Thursday, 16 June 2016 13:15 (30 minutes)

Landauer’s principle, formulated in 1961, postulates that irreversible logical or computational operations such as memory erasure require work, no matter how slowly they are performed. For example, to “reset to one” a one-bit memory requires at least kT ln2 of work, which is dissipated as heat. Bennett and, independently, Penrose later pointed out a link to Maxwell’s demon: Were Landauer’s principle to fail, it would be possible to repeatedly extract work from a heat bath.

We report tests of Landauer’s principle in an experimental system consisting of a charged colloidal particle in water. To test stochastic thermodynamic ideas, we create a time-dependent, “virtual” double-well potential via a feedback loop that is much faster than the relaxation time of the particle in the virtual potential. In a first experiment, the probability of “erasure” (resetting to one) is unity, and at long cycle times, we observe that the average work is compatible with kT ln2. In a second, the probability of erasure is zero; the system may end up in two states; and, at long cycle times, the average measured work tends to zero. In individual cycles, the work to erase can be below the Landauer limit, consistent with the Jarzynski equality. Finally, in asymmetric wells, the different well sizes can allow for erasure with an average cost below kT ln2.

Primary author: BECHHOEFER, John (Simon Fraser University) Presenter: BECHHOEFER, John (Simon Fraser University) Session Classification: R2-5 Quantum Information and Quantum Optics (DCMMP-DAMOPC) / Information quantique et optique quantique (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 110 2016 CAP Congr … / Report of Contributions CaF3-/KF3- on-line separation met …

Contribution ID: 1092 Type: Oral (Non-Student) / orale (non-étudiant)

CaF3-/KF3- on-line separation methods and the present 41Ca/Ca sensitivity at AEL-AMS Wednesday, 15 June 2016 09:15 (15 minutes)

The use of 41Ca as a sensitive long-period tracer for osteoporosis diagnoses is made possibleby accelerator mass spectrometry (AMS), with which CaF3- ions are produced and the resulting MeV positive 41Ca ions are counted. When the ion energy is sufficiently high, 41Ca and its interfering isobar 41K can be well separated by their dE/dx differences in the final ionization detector. Such applications to the populace at large, however, still await the creation of efficient small (<1MV) AMS systems that can still have a sufficiently high abundance sensitivity (41Ca/Ca~1e-13 orbet- ter). At present, small AMS systems do not have effective means to separate 41Ca from 41K on-line. Two potential methods have been explored in Canada, one exploits the molecular binding differences in CaF3- and KF3-, and the other exploits the yield differences when CaF3- and KF3- are partially fragmented into CaF+ and KF+. While these are being further developed at Lalonde AMS of uOttawa, its existing capability for 41Ca analysis using the AMS system as is, has alsobeende- termined. The 41Ca/Ca abundance sensitivity using the straightforward fast sequential injection technique between 41CaF3- and 40CaF3-, is found to be ≤5e-13 with the 3MV tandem accelerator running at its designed upper voltage limit. This is already adequate for supporting 41Ca medical research at the new and presently the only AMS facility in Canada.

Primary author: ZHAO, Xiaolei (University of Ottawa) Co-authors: Dr CHARLES, Chris (University of Ottawa); MACDONALD, Cole (University of Ot- tawa); Prof. CORNETT, Jack (University of Ottawa); KIESER, William (University of Ottawa) Presenter: ZHAO, Xiaolei (University of Ottawa) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 111 2016 CAP Congr … / Report of Contributions Study of 22Ne and 28Mg excited st …

Contribution ID: 1093 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Study of 22Ne and 28Mg excited states using fusion-evaporation and Doppler shift measurements Tuesday, 14 June 2016 14:15 (15 minutes)

Electromagnetic transition rate measurements serve as a fundamental probe of nuclear structure and provide a stringent test for theoretical models. Doppler shift lifetime measurements offer an opportunity to directly access information about electromagnetic transition rates and discriminate between model calculations. The TIGRESS Integrated Plunger device (TIP), constructed at SFU, supports Doppler shift lifetime measurements via gamma-ray spectroscopy with the TIGRESS segmented Ge array as part of the experimental program at the ISAC-II facility of TRIUMF.

A recent study using TIP employs the fusion-evaporation reaction of 18O + 12C at beam energies of 56 and 48 MeV, with reaction channel selection provided via coincident charged particle detection using ancillary CsI(Tl) detectors. Transitions were identified belonging to the 2 alpha particle and 2 proton evaporation channels from the compound system 30Si, corresponding to 22Ne and 28Mg respectively. Lineshapes, from which lifetimes can be determined by comparison to simulated data, have been observed for these transitions. The experimental approach, analysis procedure, and preliminary comparison of lineshapes to simulations using the GEANT4 toolkit will be discussed.

Primary author: WILLIAMS, Jonathan (Simon Fraser University) Presenter: WILLIAMS, Jonathan (Simon Fraser University) Session Classification: T2-1 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 112 2016 CAP Congr … / Report of Contributions Harnessing butterflies for climate …

Contribution ID: 1094 Type: Invited Speaker / Conférencier invité

Harnessing butterflies for climate closure and for improved monthly, seasonal, and interannual forecasts Monday, 13 June 2016 13:00 (30 minutes)

Although the butterfly effect – sensitive dependence on initial conditions - fundamental limitsde- terministic weather forecasting to horizons of about 10 days, it has not prevented deterministic Global Circulation Models (GCM’s) from being used way past this limit for monthly, seasonal and interannual forecasts. When such models are used for these longer term “macroweather” forecasts, they can only be interpreted statistically. However at monthly, seasonal and multiyear (“interannual”) scales, the atmosphere is governed by new (higher level) stochastic (statistical) laws which imply a huge memory which can be directly exploited by the Stochastic Seasonal and Interannual Prediction System (StocSIPS). StocSIPS is a straightforward, highly efficient forecasting system that makes global, monthly, seasonal and interannual forecasts. For these horizons, StocSIPS is significantly more accurate than the conventional models. StocSIPS’ advantages include: * Convergence to the real – not model - climate: The key to StocSIPS skill is the ScaLIng Macroweather Model (SLIMM) forecasting module that uses past data – and the huge memory in the system - to ensure that the forecast converges to the real world climate. * Speed: In order to get good statistics, conventional seasonal to annual forecasts typically re- forecast over ten to twenty realizations, each time using slightly different initial data typically taking the equivalent of a million CPU hours on the world’s fastest computers. In comparison, StocSIPS uses only a few minutes of CPU time to directly calculate the statistics of an infinite number of realizations. * No data assimilation: StocSIPS can directly forecast either gridded or individual station data, there is no need to transform the input data to make it digestible by the numerical model; Stoc- SIPS avoids complex data “assimilation” techniques. * No ad hoc post processing: The raw temperatures and precipitation rates forecast by conventional models have unrealistic variability. This is usually “corrected” using complex ad hoc post processing algorithms that use hindcasts to incorporate past information in order to make the forecasts more realistic. StocSIPS uses only past information with a theoretically justified forecast procedure. * No need for downscaling: Conventional models have pixels of 100,000 km2 or more in size and must be “downscaled” to adapt them to local conditions. Whenever long station temperature series are available, StocSIPS can forecast them directly. Finally, the global temperature – including the “pause” can be accurately forecast and this can be used to show that the probability that the post industrial warming was simply a giant fluctuation is less than 0.1%, thus closing the climate debate.

Primary author: LOVEJOY, Shaun (McGill University) Co-author: Mr DEL RIO AMADOR, Lenin (McGill University) Presenter: LOVEJOY, Shaun (McGill University)

September 29, 2021 Page 113 2016 CAP Congr … / Report of Contributions Harnessing butterflies for climate …

Session Classification: M2-6 Theory, Modelling, and Forecasting II (DASP) / Théorie, mod- élisation et prévisions II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 114 2016 CAP Congr … / Report of Contributions Relativistic quantum reference fra …

Contribution ID: 1095 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Relativistic quantum reference frames Monday, 13 June 2016 16:30 (15 minutes)

Progress in physics, from Aristotelian physics, to Galilean and Newtonian physics, and then to both special and general relativity, can be viewed as a continual refinement of the notion ofa reference frame. The next natural step in this progression is the idea of a quantum reference frame. In this talk, I will introduce the basic tools that have been developed to study quantum reference frames and examine how they may be applied to relativistic scenarios. In particular, I will look at how two observers in different Lorentz frames that are partially correlated can communicate via the exchange of a single massive spin-1/2 particle. I will then construct an alternative approach to quantum reference frames involving a trace over global degrees of freedom, rather than an average over all possible orientations of a system with respect to an external reference frame. This approach is anticipated to help deal with reference frames associated with non-compact groups, such as the Galilean group and Poincare group.

Primary author: SMITH, Alexander (University of Waterloo) Co-author: MANN, Robert (University of Waterloo) Presenter: SMITH, Alexander (University of Waterloo) Session Classification: M3-3 Fields and Strings (DTP) / Champs et cordes (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 115 2016 CAP Congr … / Report of Contributions Search for single production of a …

Contribution ID: 1096 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Search for single production of a vector-like quark via a heavy gluon in the 4b final state√ with the ATLAS detector in pp collisions at s = 8 TeV Tuesday, 14 June 2016 19:00 (2 minutes)

∗ ¯ ¯ ¯ ¯ A search is performed for the process pp → G → BH b/B¯H b → Hbb → bbbb, predicted in ∗ composite Higgs scenarios, where G is a heavy colour octet vector resonance and BH a vectorlike quark of charge −1/3. The data were obtained from pp collisions at a centre-of-mass energy − of 8 TeV corresponding to an integrated luminosity of 19.5 fb 1, recorded by the ATLAS detector at the LHC. The largest background, multijet production, is estimated using a data-driven method. No significant excess of events with respect to Standard Model predictions is observed, andupper limits on the production cross section times branching ratio are set. Comparisons to the predictions from a specific benchmark model are made, resulting in lower mass limits in the two-dimensional

∗ mass plane of mG vs. mBH .

Primary author: DALLAIRE, Frederick (Universite de Montreal (CA)) Presenter: DALLAIRE, Frederick (Universite de Montreal (CA)) Session Classification: PPD Poster Session with beer / Session d’affiches, avec bière PPD

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 116 2016 CAP Congr … / Report of Contributions Calibration of HALO for Long- …

Contribution ID: 1097 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Calibration of HALO for Long-Term Supernova Monitoring Wednesday, 15 June 2016 13:45 (15 minutes)

Supernovae are the only location where the effects of neutrino-neutrino scattering could plausibly be observed, and they are also the favored location in the universe for certain processes necessary for the formation of heavy elements. This makes supernovae mechanics relevant to the fields of both particle physics and nuclear astrophysics. A core collapse supernova can be detected by the immense burst of neutrinos it produces. For this reason, HALO (Helium And Lead Observatory) was built to detect supernova neutrinos by detecting neutrons released from lead nuclei when struck by neutrinos. The use of lead as a target material gives the detector a unique sensitivity to electron neutrinos, where as other detectors predominantly see electron anti-neutrinos. The comparison of the spectra of different neutrino flavours could provide more information about the structure and mechanics of the core-collapse and the resulting neutrino interactions. HALO has been connected to SNEWS (SuperNova Early Warning System) since Oct 9, 2015. SNEWS is a network of neutrino detectors around the world that will send an alarm to the astronomy community when a galactic supernova is detected. The surface of a supernova progenitor star does not explode until the shock wave from the core collapse reaches it, allowing the neutrino pulse to lead the light by a few hours. Because of this delay, SNEWS can inform astronomers of a supernova before it is visible, which will hopefully allow for a supernova to be observed from its very beginning for the first time. HALO is expected to run continuously for decades in order to detect a supernova. This is important because most other detectors in the SNEWS network are not primarily focused on supernovae, and as such may be shut down for refurbishments aimed at other physics goals when a supernova occurs. An “always on” detector removes the possibility that SNEWS misses a galactic supernova.

The calibration of HALO will be done during March 2016 with a Californium neutron source. Knowledge of the multiplicity of the neutrons emitted will be used to make measurements independent of the listed source strength and to mitigate statistical errors. The calibration will determine the neutron drift lengths, drift times, and capture efficiencies, which will be comparedto simulations and to existing muon-induced spallation event data.

Primary author: Mr BRUULSEMA, Colin (Laurentian University) Presenter: Mr BRUULSEMA, Colin (Laurentian University) Session Classification: W2-4 Neutrino Physics (PPD-DNP-DTP) / Physique des neutrinos (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 117 2016 CAP Congr … / Report of Contributions Nuclear Emergency Response: Co …

Contribution ID: 1098 Type: Oral (Non-Student) / orale (non-étudiant)

Nuclear Emergency Response: Comparison of Different Methodologies to Measure γ-Radiation from Ground Deposition Thursday, 16 June 2016 08:30 (15 minutes)

T.J. Stocki1, M. A. Rodrigues1, R. McCutcheon-Wickham1, L. Chaloner1, J. Rollings1, M.-O. Boudreau1, A. Parujanwala1, J.-F. Mercier1, M. Cooke1, A. Bilton2, A. Ethier2, J. Whitlock2, D. Hunton2, B. Wilson2, D. Killey2, H. Seywerd3, R. Fortin3, L. Sinclair3, D. Oneschuk3, M. Coyle3, F. Grenier4, T. Cunning4, K. Henderson4, R. Hugron4, D. Swann4 and C. Bouchard1* 1Radiation Protection Bureau, Health Canada, Ottawa, Canada 2Canadian Nuclear Laboratories, Chalk River, Canada 3Natural Resources Canada, Ottawa, Canada 4Director Nuclear Safety, Department of National Defence, Ottawa, Canada

The federal radiation assessment field team, led by Health Canada (HC), can be deployed inthe event of a domestic nuclear emergency to measure radioactive contamination in areas where the public could be impacted. Several techniques are used to evaluate ground contamination levels including in-situ gamma spectrometry, soil sampling and field/aerial surveys. A better understanding of the inter-comparability of these methods can be obtained through measurements at a contaminated site. A known and previously characterized contaminated site at Canadian Nuclear Laboratories (CNL) in Chalk River was used to compare different emergency response techniques. A ground contamination survey using RaDCAMS (Radiation Data Collection and Mapping System), developed by HC, was performed to confirm the known distribution of radiation in the field.This survey was supported by an aerial survey performed by Natural Resources Canada. In-situ gamma spectrometry was performed by HC and Department of National Defence using HPGe detectors. Soil samples were collected in a cross pattern geometry centered at the location of the in-situ measurements. Samples were also collected in a square pattern geometry at the same location and were prepared and measured in-field using HC’s Mobile Nuclear Laboratory (MNL). Soil samples from the cross pattern were measured in the MNL and compared to measurements performed by CNL and HC’s National Monitoring Section (fixed laboratories). Results of an inter-comparison analysis, performed to identify areas of improvement and limitations in the detection and analysis of soil samples, will be presented. In addition, comparisons between in-situ measurements and soil samples will be shown. Finally, lessons learned that will be used to adapt methodologies in the event of a real nuclear emergency will be discussed.

Primary author: Dr STOCKI, Trevor (Health Canada) Co-authors: BOUCHARD, Claude (Health Canada); Dr RODRIGUES, Matthew (Health Canada)

Presenter: Dr RODRIGUES, Matthew (Health Canada) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

September 29, 2021 Page 118 2016 CAP Congr … / Report of Contributions Nuclear Emergency Response: Co …

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 119 2016 CAP Congr … / Report of Contributions Exploring conformational switchi …

Contribution ID: 1099 Type: Invited Speaker / Conférencier invité

Exploring conformational switching in proteins with coarse-grained molecular simulations Monday, 13 June 2016 16:30 (30 minutes)

The traditional view holds that proteins fold into essentially unique and stable 3-dimensional structures which, in turn, determine their biological functions. Evidence is mounting, however, for a pervasive role of large-scale conformational changes for how proteins carry out their functions. Examples include the ability of some proteins to switch between entirely different folded structures, and the disorder-order transitions exhibited by so-called intrinsically disordered proteins. I will introduce a coarse-grained approach that allows the physics of such conformational switching in proteins to be studied on the computer. The approach is characterized by an intermediate level of geometric detail and a procedure for determining effective model parameters based on the properties of proteins’ global free energy landscapes. I will discuss the implications of our results for the mechanisms underlying molecular recognition and the evolution of new protein folds.

Primary author: WALLIN, Stefan (Memorial University of Newfoundland) Presenter: WALLIN, Stefan (Memorial University of Newfoundland) Session Classification: M3-6 Computational Biophysics: Methods and Concepts (DPMB) / Biophysique numérique : méthodes et concepts (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 120 2016 CAP Congr … / Report of Contributions Monitoring HF transmissions with …

Contribution ID: 1100 Type: Oral (Non-Student) / orale (non-étudiant)

Monitoring HF transmissions with the e-POP RRI instrument on the CASSIOPE Satellite Tuesday, 14 June 2016 14:15 (15 minutes)

The Radio Receiving Instrument (RRI) on e-POP payload of the CASSIOPE satellite has a relatively high sampling rate and orthogonal dipole antennas which permit the observation of continuous wave (CW), pulse and phase coded signals from transmitters on the earth. In this study, high frequency (HF) 13-bit Barker-coded binary phase shifting keying (BPSK) and CW signals are detected from a transmitter in Ottawa during satellite overpasses. The HF signal experiences several of physical effects such as ionospheric delay, Faraday rotation, Doppler shifting and mode splitting during propagation through the ionosphere. Using the BPSK pulses (of 15 msec repetition rate), independent Doppler shift estimates can be rapidly determined using amplitude and phase characteristics of the waves. During the CW transmissions, amplitude variations on the orthogonal dipoles highlight the nature of the wave propagation through the ionosphere in the HF band.

Primary author: DANSKIN, Donald (Natural Resources Canada) Co-author: JAMES, Gordon (Canadian Space Agency) Presenter: DANSKIN, Donald (Natural Resources Canada) Session Classification: T2-4 Ground-based and In Situ Observations II (DASP) / Observa- tions sur terre et in situ II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 121 2016 CAP Congr … / Report of Contributions Electron-Electron Interactions in …

Contribution ID: 1101 Type: 2016 DCMMP PhD Thesis Award Competition

Electron-Electron Interactions in Optical Properties of Graphene Quantum Dots Wednesday, 15 June 2016 13:45 (30 minutes)

In this thesis, I present a theory of electron-electron interactions in optical properties of graphene and transition metal dichalcogenides (TMDCs), two dimensional nanostructures with a hexagonal lattice. We start our discussion with electron-electron interactions in artificial rings for which the strength of interactions can be varied and exact results can be obtained. The artificial rings are described by the extended Hubbard model and solved using an exact diagonalization method in real and Fourier space of configurations. Exact and analytical results for charged rings are obtained inthe limit of very strong interactions. For the quadruple quantum dot ring and the artificial benzene ring, we find that chirality leads to the appearance of a topological phase and an effective gauge field that determines the ground state character with varied interaction strength. For thecharged artificial benzene ring, our numerical results show a transition from a degenerate to anondegen- erate ground state with increasing strength of Coulomb interactions. We show that the artificial gauge and the transition in the ground state can be detected as changes in the optical absorption spectrum. In the second part of the thesis, the electronic and optical properties of colloidal graphene quantum dots (CGQD) consisting of many benzene rings are determined. The CGQDs are described by the combination of tight binding, mean field Hartree Fock (HF) and Configuration Interaction methods. The single particle properties are described through the tight binding method basedonthe pz carbon orbitals. Screened Coulomb interactions between electrons, including direct, exchange, and scattering matrix elements, are calculated using Slater pz orbitals. HF ground states corresponding to semiconductor, Mott-insulator, and spin-polarized phases are obtained as a function of the strength of the screened interaction versus the tunnelling matrix element. The many-body ground and excited states in the semiconducting phase are constructed as a linear combination of a finite number of electron-hole pair excitations from the HF ground state (GS). The Hamiltonian is constructed in the subspace of multi-pair HF excitations to obtain the low energy, many body states by exact diagonalization using the Lanczos method. The degeneracy of the valence- and conduction-band edges of 3-fold rotationally symmetric CGQDs is shown to lead to a characteristic exciton and bi-exciton spectrum. The low-energy exciton spectrum is predicted to consist of two bright-singlet exciton states corresponding to two circular polarizations of light and a lower- energy band of dark singlets and dark triplets. The robustness of the bright degenerate singlet pair against correlations in the many-body state is demonstrated as well as the breaking of the degeneracy by the lowering of symmetry of the CGQD. Band edge biexciton energies and binding energies are predicted, and two degenerate exciton (X) states and a corresponding biexciton (XX) state are identified for the generation of an XX-X cascade. The Auger coupling of XX and excited X states is determined and our theoretical results are compared with experimental absorption and non-linear transient absorption spectra.

In the third and final part of the thesis, we replace the two non-equivalent carbon atoms ofthe graphene hexagonal lattice with a heavy transition-metal atom M, (e.g. Mo or W) andadimer X2 (e.g. S). The bandstructure of a monolayer MX2 is calculated using density functional theory (DFT). It is shown that a direct gap opens up at all K points of the Brillouin zone and strong spin orbit coupling leads to spin splitting of the valence and conduction bands and emergence ofvalley dependent optical selection rules. Finally, the magnetoluminescence experiments on a monolayer WS2 emitting circularly polarized light upon its excitation by unpolarized light are described. The emission of polarized light in zero magnetic field is explained by the possibility of formation ofa

September 29, 2021 Page 122 2016 CAP Congr … / Report of Contributions Electron-Electron Interactions in …

valley polarized 2D electron gas in unintentionally doped WS2.

Primary author: OZFIDAN, isil (University of Alberta) Presenter: OZFIDAN, isil (University of Alberta) Session Classification: W2-6 DCMMP PhD Thesis Award Competition / Compétition du Prix de thèse doctorale DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 123 2016 CAP Congr … / Report of Contributions Gapless superconductivity on the s …

Contribution ID: 1102 Type: Oral (Non-Student) / orale (non-étudiant)

Gapless superconductivity on the surface of a 3D topological insulator Wednesday, 15 June 2016 09:15 (15 minutes)

Recent angle-resolved photoemission experiments have observed a proximity-induced superconducting gap in the helical surface states of the 3D topological insulator Bi2Se3, when a thin film of the latter is grown on a superconducting NbSe2 substrate. The superconducting coherence peaks are strongly suppressed when the topological insulator thin film is doped with magnetic Mnim- purities, which was interpreted as a destruction of superconductivity in the topological surface states. Motivated by these experiments, we explore a different possibility: gapless superconductivity, where a gapless electronic density of states coexists with a nonzero superconducting order parameter. We study a model of superconducting Dirac fermions coupled to random magnetic impurities within the Abrikosov-Gor’kov framework, and find finite regions of gapless superconductivity in the phase diagram of the system for both proximity-induced and intrinsic superconductivity.

Primary authors: HAN, Jinsen (University of Alberta); MACIEJKO, Joseph (University of Al- berta); OZFIDAN, isil (University of Alberta) Presenter: OZFIDAN, isil (University of Alberta) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 124 2016 CAP Congr … / Report of Contributions Field-aligned currents associated …

Contribution ID: 1103 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Field-aligned currents associated with multiple arc systems Tuesday, 14 June 2016 14:00 (15 minutes)

The field-aligned current (FAC) system associated with auroral arcs provides important information regarding the generator responsible for multiple arc systems, and presumably for individual arcs themselves. We have identified two types of FAC configurations in multiple parallel arcsys- tems using ground-based optical data from the Themis all-sky imagers (ASIs), and magnetometers onboard the Swarm satellites during the period from December 2013 to March 2015. The first type represents a collection of multiple up/down current pairs and the other is an arc system within a broad unipolar upward current sheet. We find that (1) events corresponding to the first FAC type are mainly located in the 23-0 MLT sector, and the second type between 20-22 MLT. (2) The average current intensities for upward and downward currents in the first type are similar (~0.16 A/m). However, for the second type, the upward average current intensity (~0.32 A/m) is greater than the downward current (~0.21 A/m). (3) the average current density is larger in the first type for both upward and downward currents, with the latter, however, having a larger average density than the former in both types. (4) upward currents with more arcs embedded have a larger intensity, although the intensity of upward currents and the number of arcs do not show a linear relationship.

Primary authors: KNUDSEN, David (University of Calgary); WU, Jiashu (University of Cal- gary)

Co-authors: DONOVAN, Eric (University of Calgary); BURCHILL, Johnathan (University of Cal- gary); GILLIES, Megan (University of Calgary) Presenter: WU, Jiashu (University of Calgary) Session Classification: T2-4 Ground-based and In Situ Observations II (DASP) / Observa- tions sur terre et in situ II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 125 2016 CAP Congr … / Report of Contributions Statistical investigation of anisotro …

Contribution ID: 1104 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Statistical investigation of anisotropic ion temperature enhancements observed by the CASSIOPE/e-POP satellite Tuesday, 14 June 2016 13:45 (15 minutes)

Terrestrial ion outflow and loss to space is the result of acceleration to escape speed of ionospheric ions that normally are strongly bound to earth through gravity. Previous research suggests this acceleration takes place in multiple steps. We investigate low-energy (<10 eV) ion initial energization processes in the topside ionosphere in both hemispheres using data from the SEI, MGF and RRI instruments onboard the CASSIOPE/e-POP satellite. Using the high-frame-rate (100 Hz) two-dimensional ion distribution function data measured by the SEI, we statistically investigate anisotropic ion temperature enhancements, where ion temperatures perpendicular to B rise by more than 0.4 eV relative to the background values while temperatures parallel to B decrease, and study their morphology and Kp dependence. Multiple field-aligned current (FAC) sheets are found to be always associated with these events based on magnetic data from the MGF instrument. For some events, signatures of broad-band extremely low frequency (BBELF) plasma waves, auroral hiss and chorus are detected by the RRI instrument. We study the causal relations between the anisotropic ion temperature increases and the magnitudes of the FACs and the power spectral density (PSD) of plasma waves.

Primary author: SHEN, Yangyang (University of Calgary) Co-authors: KNUDSEN, David (University of Calgary); MILES, David (University of Alberta); JAMES, Gordon (Communications Research Council); BURCHILL, Johnathan (University of Calgary) Presenter: SHEN, Yangyang (University of Calgary) Session Classification: T2-4 Ground-based and In Situ Observations II (DASP) / Observa- tions sur terre et in situ II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 126 2016 CAP Congr … / Report of Contributions Exploring the Electromagnetic Str …

Contribution ID: 1105 Type: Oral (Non-Student) / orale (non-étudiant)

Exploring the Electromagnetic Structure of the Charged Pion and Kaon Tuesday, 14 June 2016 17:30 (15 minutes)

In Quantum Chromodynamics (QCD), the elastic form factor of the charged pion is unique inthat it can be rigorously calculated perturbatively in the limit of asymptotically large momentum transfer. However, the lack of a “free pion” target makes experimental studies of this quantity challenging, and one must make measurements using the virtual pion cloud of the nucleon via pion electroproduction. The kaon is a similar object, and experimental measurements of the ratio of the kaon and pion form factors versus Q2 are of significant interest.

This talk will describe the pion and kaon form factor program at JeffersonLab, where experiments at 6 GeV have provided precise measurements of the pion form factor at moderate momentum transfers. Upcoming measurements using the upgraded 12 GeV beam and Hall C facilities will allow us to extend these measurements to even larger momentum transfer.

Primary author: HUBER, Garth (University of Regina) Presenter: HUBER, Garth (University of Regina) Session Classification: T3-1 Hadronic Structure (DNP) / Structure hadronique (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 127 2016 CAP Congr … / Report of Contributions Frequency-Domain Synthetic Ape …

Contribution ID: 1106 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Frequency-Domain Synthetic Aperture Focusing Techniques for Imaging with Single-Element Focused Transducers Tuesday, 14 June 2016 09:00 (15 minutes)

The resolution of conventional single-element ultrasound imaging varies spatially and depends on several factors, such as the central frequency, bandwidth, and the transducer’s active aperture size. Synthetic aperture focusing techniques (SAFT) enable dynamic focusing, which, among others, could lead to improvements in the spatial resolution of ultrasound imaging systems. In SAFT, a large effective aperture is mathematically synthesized by lateral scanning a single-element transducer. Several time-domain SAFT algorithms have been proposed for a single-element focused transducer. In this work, two new frequency-domain SAFT algorithms are proposed, which are based on matched filtering technique and taking into account the diffraction effects of asingle- element transducer. The performance of the proposed SAFT algorithms is evaluated for single- element focused transducers with frequencies of 5 MHz, 25 MHz, and 55 MHz. The spatial resolution, signal-to-noise ratio (SNR) and contrast of the proposed frequency-domain SAFT algorithms are compared with conventional B-mode and time-domain SAFT using simulated and experimental data. Preliminary simulation results have shown that the proposed SAFT algorithms yield improved spatial resolution and SNR compared to conventional B-mode and time-domain SAFT. However, the contrasts of the proposed SAFT algorithms are similar to the conventional B-mode and time-domain SAFT.

Primary author: Mr SHASWARY, Elyas (Dept. of Physics, Ryerson University) Co-authors: Prof. KUMARADAS, Carl J. (Dept. of Physics, Ryerson University); Prof. TAVAKKOLI, Jahan (Dept. of Physics, Ryerson University & Institute for Biomedical Engineering, Science and Tech- nology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital)

Presenter: Mr SHASWARY, Elyas (Dept. of Physics, Ryerson University) Session Classification: T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 128 2016 CAP Congr … / Report of Contributions Measurements of 236U by Acceler …

Contribution ID: 1109 Type: Oral (Non-Student) / orale (non-étudiant)

Measurements of 236U by Accelerator Mass Spectrometry Thursday, 16 June 2016 08:45 (15 minutes)

236U is used as a signature in nuclear forensic, environmental and oceanographic studies. Its atomic ratio with the most abundant uranium isotope (238U) in environmental and bioassay samples can vary widely from 10-8 to 10-12. Therefore, its full-range measurement is a challenge by conventional radiometric or mass spectrometric methods. Accelerator Mass Spectrometry (AMS) offers interference-free measurement with ultra-high abundance sensitivity for several long-lived radioactive isotopes, including 236U. This is mainly due to the molecular destruction process involved in AMS. For 236U, however, AMS suffers from poor ionization and transmission efficiencies compared to other mass spectrometric methods such as ICP-MS and TIMS, due to the low formation probability of negatively charged uranium-containing ions. The main objective of this work is to enhance a negative ion current of the analyte, in this case UO- ion, from the cesium-sputter ion source used in AMS. We tested various diluents including Al, Ag, Nb, SiC, Ta, Si and Ta+Si with Fe-UOx for the UO- anion beam using the AMS system at A.E. Lalonde AMS Laboratory, Univer- sity of Ottawa. The addition of Ta and Si to the Fe-UOx target matrix increases the productionof UO- ion beam current by three fold to about 9nA from 2.5nA when using Al powder. Preliminary results from these tests will be presented and possible mechanism for the UO- anion beam increase will be discussed.

Primary author: Dr KAZI, Zakir (University of Ottawa) Co-authors: Dr CHARLES, Christopher (University of Ottawa); Prof. CORNETT, Jack (University of Ottawa); Prof. KIESER, Liam (University of Ottawa); Dr ZHAO, Xiaolei (University of Ottawa) Presenter: Dr KAZI, Zakir (University of Ottawa) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 129 2016 CAP Congr … / Report of Contributions Hollow-core photonic Bragg fiber …

Contribution ID: 1110 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Hollow-core photonic Bragg fiber for bulk and surface sensing applications Tuesday, 14 June 2016 14:30 (15 minutes)

We demonstrate a hollow-core photonic Bragg fiber for bulk and surface sensing applications. The sensor operates on a resonant sensing modality. Variation in the fiber core effective refractive index modifies the bandgap guidance of the fiber, leading to a spectral shift in the fiber transmission spectrum. As a demonstration for the bulk sensing application, we apply the fiber sensor to detect refractive index of analyte filling in the fiber core, a sensitivity of 1500nm/RIU is achieved. Asa demonstration for the surface sensing application, we use it to monitor the dissolution dynamic of a thin film coated on the fiber core inner surface, the obtained surface sensitivity isfoundto be 0.05nm/nm. The proposed sensor presents a ‘one fiber’ solution for both bulk andsurface sensing applications, which is promising for the development of a new generation of the fiber- based biosensors.

Primary author: LI, Jingwen (polytechnique de montreal) Co-author: Prof. SKOROBOGATIY, Maksim (Ecole polytechnique de Montreal) Presenter: LI, Jingwen (polytechnique de montreal) Session Classification: T2-5 Photonics I: Applications (DAMOPC-DPP) / Photonique I : applications (DPAMPC-DPP)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 130 2016 CAP Congr … / Report of Contributions On a minimal set of separable mea …

Contribution ID: 1112 Type: Poster (Non-Student) / affiche (non-étudiant)

On a minimal set of separable measurements for a pure state determination in a two-qubit system. Tuesday, 14 June 2016 19:02 (2 minutes)

On a minimal set of separable measurements for a pure state determination in a two-qubit system. I.D. Ivanovic, Department of Physics, Carleton University In this note I will address the problem of minimum set of separable measurements necessary to determine a pure state of a two-qubit system. A set of measurements for a complete state determination of a 2x2 system was given in[1], later it was expanded to arbitrary 2\^{}(n) in [2], and 2x2 was experimentally confirmed in [3]. Besides, a question of determining an unknown pure state was always present, and as recently as this year, it was discussed e.g. in [4] and [5]. In [5] a set of measurements was suggested aiming at determining an unknown pure state P,(\{P0,tr(P)=1,P\^{}2=P \}) of a two-qubit system. The set of nine operators allows pure state determination. The set of seven expected values for operators \_i\_j ,tr(P\_i\_j ), plus normalization, where \_i\{I,\_x,\_y,\_z \} are Pauli matrices, { σ_x⊗I,σ_y⊗σ_x ,σ_y⊗σ_y ,σ_y⊗σ_z ,σ_z⊗σ_x ,σ_z⊗σ_y ,σ_z⊗σ_z } does not. It is shown, by construction, that this particular choice of operators is inadequate. Some other possible solutions are discussed. Email: [email protected]

References: [1] I.D. Ivanovic , in CISM Courses and lectures No.294 Proceedings of “Information complexity and control in quantum physics”, Editors Blaquiere et al –Udine,1985, Springer Verlag 1987, p 67- 76. [2] W. K. Wooters and B. D. Fields, Ann. Phys (NY) 191 (189) p.363 [3] Adamson R.B.A and A.M. Steinberg arxiv: 0808.0944v4[quant-ph] [4] Chapman R. J. et al arxiv:1602.04194v1[quant-ph] [5] Xian Ma, et al arXiv: 1601.05379v1 [quant-ph]

Primary author: Dr IVANOVIC, Igor (Carleton University) Presenter: Dr IVANOVIC, Igor (Carleton University) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 131 2016 CAP Congr … / Report of Contributions X-ray Detectors for the Unique Th …

Contribution ID: 1113 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

X-ray Detectors for the Unique Third Forbidden Decay of Potassium-40 Tuesday, 14 June 2016 17:15 (15 minutes)

Enigmatic dark matter is responsible for 26% of the total mass-energy in the known universe. Since 1997, the DAMA/LIBRA experiment has claimed to have the first direct evidence for the observation of dark matter. One major source of background for this experiment isthe 40K isotope. The chemical similarity between potassium and sodium is why trace amounts can be found in the NaI scintillators that DAMA/LIBRA uses as detectors. This contamination presents a challenging background that makes any interpretation of the dark matter signal difficult. 40K occurs in potassium (~0.0117%), which is a contaminant even in ultra-pure NaI(Tl). Two decay channels of 40K are of particular consequence. The first is the electron capture (EC*) into an excited state of 40Ar* which quickly de-excites to ground level. This releases a 2.95 keV x-ray or a 2.5 keV auger electron. A 1460 keV gamma ray is released in coincidence. There is also an electron capture (EC) directly to the ground state of 40Ar, which only releases a 2.95 keV x-ray (or 2.5 keV Auger Electron). Both decays contributes to the ~3 keV bump seen in the data by DAMA/LIBRA and are a factor in their extraordinary claim. DAMA/LIBRA is able to remove a fraction of the decays to the excited state by tagging the 1460 keV gammas. However, the branching ratio to the ground state is not known. This branching ratio will help reduce and understand the background in the dark matter signal region of the DAMA/LIBRA experiment. In addition, this will be the first observation of a unique third forbidden decay. We report on the performance of a Large Area Avalanche Photo Diode (LAAPD) for the direct measurement of the low energy x-rays and electrons. By observing multiple sources and x-ray fluorescence the LAAPD can be studied and characterised for the 40K energy range.Their viability for the use in a dedicated measurement of the EC branching ratio will then be

determined.

Primary author: Mr STUKEL, Matthew (Queens University) Co-author: Dr DI STEFANO, Philippe (Queens University) Presenter: Mr STUKEL, Matthew (Queens University) Session Classification: T3-5 Cosmic Frontier: Dark Matter III (PPD) / Frontière cosmique: matière sombre III (PPD)

September 29, 2021 Page 132 2016 CAP Congr … / Report of Contributions X-ray Detectors for the Unique Th …

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 133 2016 CAP Congr … / Report of Contributions Search for New Physics: Dark Vec …

Contribution ID: 1114 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Search for New Physics: Dark Vector Boson Wednesday, 15 June 2016 14:30 (15 minutes)

Based on the simple U’(1) extension of Standard Model (SM), we have used Dark Vector boson kinetic and mass mixings to generate the new beyond the SM extension: dark photon and Z’ bosons. Both dark photon and Z’ have different masses and couplings to the original SM particles defined by the set of mixing parameters. In addition, Z’ boson have parity -violating nature and could be used as candidate for physics beyond the SM in precision electroweak searches. Comparing the theoretical predictions and the experimental data, we made exclusion plots to determine possible allowed region of masses and mixing parameters for these new particles. Our calculations have been completed up to one-loop level with dark photon or Z’ participating in Moller scattering or electron-positron collisions. We also plan to include a discussion of possible SU(2)’ SM extension in order to study strong CP violation in electron-positron collisions. The talk will give detailed analysis of the impact of dark photon and Z’ on the observables of the proposed Moller and Belle II experiments.

Primary author: Mr WU, Shihao (Memorial University Grenfell Campus) Presenter: Mr WU, Shihao (Memorial University Grenfell Campus) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 134 2016 CAP Congr … / Report of Contributions New exact solutions to the Einstei …

Contribution ID: 1115 Type: Invited Speaker / Conférencier invité

New exact solutions to the Einstein field equations Tuesday, 14 June 2016 13:15 (30 minutes)

We present new classes of exact solutions to the five dimensional Einstein gravity with cosmological constant, coupled to the Maxwell and dilation fields. The theory has two coupling constants for dilation-Maxwell and dilation-cosmological constant terms. The solutions are non-stationary and moreover almost regular everywhere for non-zero coupling constants. The cosmological constant depends on the dilation coupling constant and can take positive, zero or negative values.

Primary author: GHEZELBASH, Masoud (University of Saskatchewan) Presenter: GHEZELBASH, Masoud (University of Saskatchewan) Session Classification: T2-7 Gravity, Astrophysics and Cosmology (DTP) / Gravité, astrophysique et cosmologie (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 135 2016 CAP Congr … / Report of Contributions Finding the rules of blood regener …

Contribution ID: 1116 Type: Invited Speaker / Conférencier invité

Finding the rules of blood regeneration Monday, 13 June 2016 15:45 (30 minutes)

Much of complex biology results from interactions among a large number of individually simpler elements. Blood regeneration is no different. About 100 billion new blood cells are made everyday from a much smaller yet a large population of diverse stem cell population. I will present a phenomenological model of blood regeneration, which provides a framework to understand large variation (~3 orders of magnitude) among contributions from individual stem cells observed in recently reported experiments with primates. We show that a combination of slow stem cell dif- ferentiation to progenitor followed by their bursty amplification is at the heart of this observed variability. With our model we develop a counter hypothesis to the role of cell-level differences as an explanation for the large variability and highlight the role of progenitors in maintaining blood homeostasis.

Primary author: Prof. GOYAL, Sidhartha (Univ of Toronto) Co-authors: CHEN, Irvin (UCLA); KIM, Sanggu (UCLA); CHOU, Tom (UCLA) Presenter: Prof. GOYAL, Sidhartha (Univ of Toronto) Session Classification: M3-6 Computational Biophysics: Methods and Concepts (DPMB) / Biophysique numérique : méthodes et concepts (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 136 2016 CAP Congr … / Report of Contributions The PICO 0.1 bubble chamber cali …

Contribution ID: 1117 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The PICO 0.1 bubble chamber calibration Tuesday, 14 June 2016 14:15 (15 minutes)

The search for dark matter calls for increasingly sensitive experiments. For several decadesnow, scientists have built more and more sensitive detectors in the hope to directly detect WIMPs, a type of candidate particles for dark matter. WIMPs should interact with normal matter by elastic scattering with nuclei. Experiments are typically performed underground to shield themfrom cosmic and atmospheric radiation. However, an important background radiation for dark matter experiments is neutrons present underground, whose response in detectors is indistinguishable form that of a WIMP. The full understanding of the neutrons’ response in dark matter detectors is, therefore, of the utmost importance. The PICO collaboration presently operates two bubble chambers in the SNOLAB underground laboratory in Sudbury, Ontario. An effort is being made by the collaboration towards the understanding of those chambers’ behavior. To this aim, multiple calibration chambers have been built. The PICO 0.1 chamber is operated at the Tandem Van deGraaff facility of the Université de Montréal where a proton beam is used to produce mono-energetic neutrons from the 51V (p, n)51Cr reaction. This chamber has shown to be one of the cleanest and most reliable chamber designed by the collaboration, which makes it the perfect detector to perform the neutron calibration. This talk will explain the goal and experimental method ofthe measurements. Preliminary results of the calibration will also be presented.

Primary author: Mr GIRARD, Frédéric (Laurentian University) Presenter: Mr GIRARD, Frédéric (Laurentian University) Session Classification: T2-3 Cosmic Frontier: Dark Matter II (PPD) / Frontière cosmique: matière sombre II (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 137 2016 CAP Congr … / Report of Contributions Half-life measurements of nuclei a …

Contribution ID: 1118 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Half-life measurements of nuclei around the doubly-magic 100Sn Monday, 13 June 2016 13:00 (15 minutes)

100Sn is the heaviest self-conjugate doubly magic nuclei with N = Z = 50. Research on this nucleus has been aggressively pursued, for its properties yield valuable information on many topics of nuclear physics: the robustness of the magic number 50 far from stability, the effect of proton- neutron interaction, and the location of the proton dripline and the end of the rapid proton-capture process path, to name a few. Due to the lack of experimental information on the structure of 100Sn itself, the properties of 100Sn have to be inferred from spectroscopy results of the neighbouring isotopes. As one of the experimental observables, half-life measurements of these radioactive nuclei reflect their general stability, while enabling the calculation of transition strengths fordecay matrix elements. These results serve as benchmark tests against modern shell model calculations and inputs for astrophysical rapid proton-capture models of nucleosynthesis.

Record quantities of N ∼ Z ≤ 50 nuclei were produced at RIKEN Radioactive Isotope Beam Fac- tory, via fragmentation of an intense 124Xe beam on a thin 9Be target. Their decay products were measured with EURICA, consisting of high-purity germanium detectors for γ rays, and WAS3ABi, a set of position-sensitive silicon detectors for positrons and protons. Half-lives of exotic 91Pd, 95Cd, 97In, and 99Sn isotopes were measured for the first time, and higher precision in half-lives of several isotopes in the vicinity of 100Sn was achieved. A systematic study of the measured half- lives will be presented, probing the robustness of the magic number 50 in nuclei near the proton dripline.

Primary author: Mr PARK, Joochun (Jason) (University of British Columbia/TRIUMF) Co-authors: Mr LUBOS, Daniel (Technische Universitaet Muenchen); LEWITOWICZ, Marek (GANIL); KRUECKEN, Reiner (TRIUMF); GERNHAEUSER, Roman August (Technische Universitaet Muenchen (DE)); NISHIMURA, Shunji (RIKEN)

Presenter: Mr PARK, Joochun (Jason) (University of British Columbia/TRIUMF) Session Classification: M2-1 Nuclear Structure I (DNP) / Structure nucléaire I (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 138 2016 CAP Congr … / Report of Contributions Photon pair generation in fiber mi …

Contribution ID: 1119 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Photon pair generation in fiber microcouplers for quantum information Wednesday, 15 June 2016 09:15 (15 minutes)

Due to its inherent stability and compactness, integrated photonics can allow for experimental complexity not currently achievable with bulk optics. This opens up the possibility for large-scale quantum technological applications, such as quantum communication networks and quantum information processing. Most demonstrations so far have featured the on-chip manipulation of photon states using a free-space bulk-optic source of photons [1, 2]. This has the drawback that it introduces loss due to mismatch between the diverse spatial modes of the produced photons and the chip’s waveguide modes. In this way loss limits the number of photons that are simultaneously in the integrated optical device, and thus limits the number of qubits. One way to avoid this loss is to generate the photons in another waveguide device. This can be done through, for example, spontaneous four-wave mixing (SFWM) [3]. In this work, we experimentally and theoretically investigate the SFWM generation of photons in a waveguide coupler comprised of two touching tapered optical fibres, which we call a micro- coupler. The two silica tapered fibers are 1 micron in diameter and 10 cm long. Thedevicehas three advantages over a standard telecom 2x2 fiber coupler. 1. The small mode area enhances the photon generation rates. 2. Since the coupler exhibits both birefringence and has two output fibres, in principle the device should be able to produce polarization-entangled photon pairs.3. The strong waveguide-waveguide coupling and waveguide dispersion (due to the tapering) forces the photons to be far in wavelength from the background light around the pump. We present experimental characterizations of the produced photons.

References: [1]. Matthews, J. C. F. et al. Nat. Photon. 3, 346–350 (2009). [2]. Silverstone, J. et al. Nat. Photon. 8, 104–108 (2014). [3]. Smith, B. et al. Opt. Express 17, 23589-23602 (2009).

Primary author: CHENG, Xinru (University of Ottawa) Co-authors: SUSSMAN, Benjamin J. (National Research Council of Canada); BAKER, Chams (Uni- versity of Ottawa); ENGLAND, Duncan G. (National Research Council of Canada); LUNDEEN, Jeff S. (University of Ottawa); GINER, Lambert (University of Ottawa); BUSTARD, Philip J. (National Research Council of Canada); BAO, Xiaoyi (University of Ottawa) Presenter: CHENG, Xinru (University of Ottawa) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 139 2016 CAP Congr … / Report of Contributions Observation of coupling between …

Contribution ID: 1121 Type: Oral (Non-Student) / orale (non-étudiant)

Observation of coupling between microscopic diffusion and macroscopic elasticity in soft matter Monday, 13 June 2016 13:30 (15 minutes)

Material diffusion processes are fundamentally driven by local microscopic interactions. Many important applications of diffusion, including drug delivery, are based on this concept. However, some orientational microscopic interactions can generate a collective macroscopic organization. Thus, macroscopic boundary conditions may affect the microscopic diffusion if orientational interactions are involved in the diffusion process. Liquid crystalline materials are the best examples of orientationally correlated (oriented) molecular complexes where we can observe such phenomena. However, many other self-organized (oriented) material systems, particularly those present in the biological tissue, have similar behavior. My presentation will describe the experimental observation and theoretical modeling of the diffusion of chiral guest molecules in a nematic liquid crystal host and will discuss the possible implications of our observation in the drug diffusion phenomena in the biological tissue. Future developments will be also shortly discussed.

Primary author: GALSTIAN, tigran (Laval University) Presenter: GALSTIAN, tigran (Laval University) Session Classification: M2-2 Molecular Biophysics (DPMB) / Biophysique moléculaire (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 140 2016 CAP Congr … / Report of Contributions Electron temperature anisotropies …

Contribution ID: 1122 Type: Oral (Non-Student) / orale (non-étudiant)

Electron temperature anisotropies measured by CHAMP Wednesday, 15 June 2016 10:00 (15 minutes)

CHAMP (CHAllenging Minisatellite Payload), a low Earth orbit minisatellite launched by the Ger- man Space Agency (DLR), was operated between July 2000 and September 2010. Its primary mission was to provide high accuracy measurements of Earth gravity and magnetic fields, but it was also equipped with other instruments to monitor its near ionospheric environment, including a large area planar Langmuir probe (PLP) used to measure local electron density and temperature. Over the ten years of operation of the satellite, it was observed that, at given latitudes, there were a small but systematic difference between electron temperatures obtained when the satellite was Southbound compared to those when it was Northbound [1]. The largest relative differences ofor- der 10%, were observed at mid latitudes in both hemispheres. In this work we show that a possible explanation for these differences can be attributed to the geometry of the planar Langmuir probe, and the varying “magnetic connection” between the probe and the boom of the satellite. With the boom and the attached magnetometer in the upstream direction, and under normal CHAMP flying attitude, magnetic field lines passing through the PLP will intersect the boom when the satelliteis Northbound in the southern hemisphere, or when it is Southbound in the Northern hemisphere. Otherwise, magnetic field field lines passing trough the LPL do not intersect the boomorany other satellite structure. Given thermal electron gyroradii of order 2 cm at CHAMP altitude, the fact that electrons essentially trapped in magnetic flux tubes of radius of order of a gyroradius, and the dimensions of the boom and LPL, it follows that when the probe is “magnetically connected” to the boom, the latter effectively obstructs the flow of electrons to the probe and hence thenum- ber and velocity distribution of collected electrons. This hypothesis is tested with Particle in Cell (PIC) simulations of the CHAMP PLP characteristics measured under representative ionospheric plasma parameters assuming a simplified satellite geometry. Characteristics obtained from computed collected currents as a function of probe bias voltage are then fitted using the probe response function derived by Rother, et al. and shown to be consistent qualitatively and quantitatively with observation. In particular, it is found that, using the same plasma density and temperatures in the simulations, the electron temperature is lower by approximately 10% when magnetic lines at the PLP intersect the boom, than when they don’t.

[1] Rother, et al., Radio Science, Vol. 45, RS6020, doi:10.1029/2010RS004445, 2010

Primary author: MARCHAND, Richard (University of Alberta) Presenter: MARCHAND, Richard (University of Alberta) Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 141 2016 CAP Congr … / Report of Contributions A Neural Network (NN)-based foF …

Contribution ID: 1123 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

A Neural Network (NN)-based foF2 model for a single station in the polar cap Monday, 13 June 2016 14:15 (15 minutes)

The work on neural networks (NN) by several authors has shown promising results in modeling nonlinear and complex processes in the near Earth space. For instance, NN-based models have been developed to forecast solar and magnetic activity indices, and different ionospheric parameters. However, the developed models have been faced with the challenge of data paucity in the polar region, a major drawback in obtaining suitable relevant models for various geophysical applications in the region.

A neural network based model for the critical frequency of the F2 layer (foF2) has been developed using selected geophysical inputs and observed data from Resolute (74.75° N, 265.00° E) spanning from 1975 – 1995 and 2009 – 2012, obtained from the Space Physics Interactive Data Resource (SPIDR) and the Canadian High Arctic Ionospheric Network (CHAIN), respectively. A comparison between the NN and the IRI (International Reference Ionosphere) model values with observations was investigated. Both models reproduce the observed diurnal and seasonal variations in foF2 except that the IRI model tends to underestimate the values during low solar activity. The NN model is able to reproduce the enhancements in the foF2 observed in the measurements during the equinoxes, and also shows an improvement in foF2 predictions during disturbed days. An analysis of the root mean square errors (RMSE) computed between the model predictions and observed values show a noticeable margin between the NN and IRI – predicted foF2 values.

Primary author: ATHIENO, Racheal (University of New Brunswick) Co-author: THAYYIL, Jayachandran (University of New Brunswick) Presenter: ATHIENO, Racheal (University of New Brunswick) Session Classification: M2-6 Theory, Modelling, and Forecasting II (DASP) / Théorie, mod- élisation et prévisions II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 142 2016 CAP Congr … / Report of Contributions Bubbles: A Model And Formation …

Contribution ID: 1124 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Bubbles: A Model And Formation Process Within Superheated Liquid Bubble Chambers Tuesday, 14 June 2016 19:04 (2 minutes)

The PICO experiment uses superheated liquid bubble chambers with different freons, presently C3F8, as the active fluid to search directly for dark matter. When a particle deposits energy inthe active fluid, within a certain critical length, a local phase transition might occur if thisenergyis greater than a certain critical energy. This phase transition is explosive in nature and will befol- lowed by an emission of an acoustic signal. This signal carries enough information that allows for the discrimination the main background particles, alphas and neutrons. A more complete model of the formation of the bubble, the explosive bubble growth and the generation of the acoustic signal can help to improve the background discrimination techniques. This work summarizes the progress we have made in the understanding of those issues.

Primary author: Mr LE BLANC, Alexandre (Laurentian University) Presenter: Mr LE BLANC, Alexandre (Laurentian University) Session Classification: PPD Poster Session with beer / Session d’affiches, avec bière PPD

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 143 2016 CAP Congr … / Report of Contributions Conformational free energy of pol …

Contribution ID: 1125 Type: Oral (Non-Student) / orale (non-étudiant)

Conformational free energy of polymers under confinement Thursday, 16 June 2016 14:00 (15 minutes)

An understanding of the physical properties of polymers in confined environments is essential for the development of nanofluidic devices for DNA analysis, as well as for understanding the organization of bacterial chromosomes. Theoretical treatments of the dynamical behaviour of confined polymers often employ analytical approximations of the conformational free energy. Monte Carlo (MC) computer simulation methods provide an effective means to directly measure the free energy for simple model systems and test these approximations. In this study, we employ MC simulations measure the free energy for linear, ring, and star polymers subject to cylindrical confinement. The free energy is measured as a function of intramolecular overlap along the cylinder axis, in the case of single-polymer systems, and intermolecular overlap for two-polymer systems. We examine the variation of the free energy functions with polymer length, stiffness and confinement dimensions. The results are compared with theoretical predictions using the de Gennes blob model, andwe identify the parameter regime in which this scaling theory is valid. Finally, we discuss the relevance of the results to the following phenomena: the unfolding of cylindrically confined DNA, the arm-retraction relaxation mechanism of star polymers, and entropic separation of confined ring polymers.

Primary author: Prof. POLSON, James (University of Prince Edward Island) Co-authors: Mr TREMBLETT, Aidan (University of Prince Edward Island); Ms KERRY, Deanna (University of Prince Edward Island)

Presenter: Prof. POLSON, James (University of Prince Edward Island) Session Classification: R2-1 Computational Condensed Matter (DCMMP) / Matière conden- sée numérique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 144 2016 CAP Congr … / Report of Contributions Towards First Physics At Belle II

Contribution ID: 1126 Type: Invited Speaker / Conférencier invité

Towards First Physics At Belle II Wednesday, 15 June 2016 10:00 (30 minutes)

The next-generation B-factory Belle II at the upgraded KEKB accelerator, SuperKEKB, isaimingto start physics data taking in 2018. It is an asymmetric e+e- collider that will operate with 40x the instantaneous luminosity of KEKB/Belle. The broad physics program will cover physics with Band D mesons, muon and tau leptons as well as measurements using the method of radiative returns and direct searches for New Physics. This talk will summarize the current status of the accelerator and the detector with emphasis on the electromagnetic calorimeter. This talk will furthermore give an overview about physics topics for the first data with a focus on direct searches forDark Photons decaying into standard model particles or light dark matter.

Primary author: FERBER, Torben (University Of British Columbia) Presenter: FERBER, Torben (University Of British Columbia) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 145 2016 CAP Congr … / Report of Contributions Helium-3 thermal neutrons counte …

Contribution ID: 1127 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Helium-3 thermal neutrons counters in the SuperKEKB commissioning detector Monday, 13 June 2016 13:30 (15 minutes)

Thermal neutron detectors have been installed into BEAST II, the commissioning detector ofthe SuperKEKb accelerator. These detectors use helium-3 to detect neutrons via the capture process 3He+n →3H+p + 720keV and are only sensitive to thermal neutrons, and are therefore an excellent means of monitoring the thermal neutron flux in the BEAST. Commissioning began in February and continued until the end of May, providing a large variety of beam conditions in which to measure the neutron flux. These flux measurements are compared with simulation in order to test the validity of the simulations.

Primary author: DE JONG, Samuel (University of Victoria) Presenter: DE JONG, Samuel (University of Victoria) Session Classification: M2-5 Energy Frontier: SUSY and Exotics (PPD) / Frontière d’énergie: supersymétrie et particules exotiques (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 146 2016 CAP Congr … / Report of Contributions Upgrading the Shield of the GIOV …

Contribution ID: 1128 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Upgrading the Shield of the GIOVE High-purity Germanium Detector Tuesday, 14 June 2016 16:30 (15 minutes)

The GIOVE (Germanium Inner-Outer Veto) detector is a highly sensitive germanium spectrometer used to screen materials for trace amounts of radioactivity. Material screening is an important aspect of the construction rare-event experiments such as GERDA and XENON, which require extremely low background levels. GIOVE is located at the Max Planck Institute for Nu- clear and Particle Physics in Heidelberg, Germany, housed in the lower level laboratory at a depth of 15 m water equivalent. The extensive shield and unique passive-active veto system allows the detector to achieve sub-mBq sensitivities despite its shallow depth. A variety of new shield configurations and materials were investigated to further improve the sensitivity of the detector. Monte Carlo simulations demonstrate that substantial reductions in the neutron and gamma-ray spectrum at the diode may be possible by either rearranging the existing shield layers or making use of new materials tungsten and boron carbide. The results indicate that new materials and construction techniques may allow GIOVE to achieve higher sensitivity levels and suggest potential improvements to current material screening methods available to rare-event experiments.

Primary author: MAUEL, Jennifer (Queen’s University) Presenter: MAUEL, Jennifer (Queen’s University) Session Classification: T3-5 Cosmic Frontier: Dark Matter III (PPD) / Frontière cosmique: matière sombre III (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 147 2016 CAP Congr … / Report of Contributions ”Macroporous Silicon as an IR Filter”

Contribution ID: 1129 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

”Macroporous Silicon as an IR Filter” Monday, 13 June 2016 16:30 (15 minutes)

Authors: T. Beniac, C. Vendromin, N. Dwyer, N. Majtenyi, M. Reedyk. Currently, optical cutoff filters in the infrared range are primarily based on scattering or multilayers. These types of filters, however, comewith disadvantages. In multilayer filters the varying material properties between the different layers causes mechanical instability at extreme temperatures. Scattering-type filters can be very fragile; the filters may be damaged by exposing them to high pressure gradients or by accidental mechanical removal of the scatterers. It has recently been found that macroporous Silicon can act as an optical cutoff filter in the infrared range.[1] Filters constructed from porous Silicon do not exhibit the same disadvantages as do the scattering and multilayer filters. Macroporous Silicon is created via an electrochemical etching process using an anodic (i.e. the Silicon sample acts as the anode) electrochemical cell containing an electrolyte solution of hydrofluoric acid and ethanol. When a current is passed across the cell, it is observed that pores form on the surface of the sample over time. The morphological properties of these pores seem to differ depending on etching conditions such as the concentration of acid in the electrolyte, the electronic and crystallographic properties of the sample, the current, and the etching time. The cutoff wavelength of the porous silicon filters appears tobe dependent on the morphological properties of the sample. Silicon samples of differing resistivity and crystal orientation have been etched under various conditions in order to perform a systematic investigation of the relationship between the optical and morphological properties of porous Silicon filters. The cutoff wavelength of the filter is determined by transmission spectroscopy while the morphological properties are investigated by SEM imaging to extract the pore-to-area density of the samples.

[1] V. Kochergin, and H. Foell, ‘Novel Optical Elements Made From Porous Si’, Materials Science and Engineering, R 52, (2206) 93-140.

Primary author: BENIAC, Thomas (Brock University) Co-authors: VENDROMIN, Colin (Brock University); REEDYK, Maureen (Brock University) Presenter: BENIAC, Thomas (Brock University)

September 29, 2021 Page 148 2016 CAP Congr … / Report of Contributions ”Macroporous Silicon as an IR Filter”

Session Classification: M3-4 Materials Characterization: Microscopy and Imaging (DCMMP) / Caractérisation des matériaux: microscopie et imagerie (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 149 2016 CAP Congr … / Report of Contributions Understanding the signal induced …

Contribution ID: 1130 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Understanding the signal induced within a gaseous spherical detector used by the NEWS experiment Tuesday, 14 June 2016 14:00 (15 minutes)

More than eighty years after its existence was originally postulated, the search for Dark Matteris still ongoing. NEWS is a direct detection experiment that aims to detect WIMPs with a metallic spherical detector with a high voltage electrode in its centre, with gas as its target mass.

In the context of the NEWS experiment, our estimators of the energy of events, and their position within the detector, are based on the amplitude and risetime of our signal. We have developed an in-depth understanding of the formation process of our signal, specifically the response function of our physical detector and its electronics. Through a digital deconvolution of this response function, we recover the original electronic signal released by an energy deposition in the target volume. This allows for optimum discrimination between nuclear recoils and other pulses, and improved estimators of the energy and position of events.

Primary author: VAZQUEZ DE SOLA, Francisco Andres (Queen’s University) Presenter: VAZQUEZ DE SOLA, Francisco Andres (Queen’s University) Session Classification: T2-3 Cosmic Frontier: Dark Matter II (PPD) / Frontière cosmique: matière sombre II (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 150 2016 CAP Congr … / Report of Contributions A Fine Pointing System Suitable fo …

Contribution ID: 1132 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

A Fine Pointing System Suitable for Quantum Communications on a Satellite Tuesday, 14 June 2016 19:00 (2 minutes)

In order to perform quantum key distribution (QKD) to a moving satellite, a fine pointing system is needed to ensure the collection of as many photons as possible. Since QKD only relies on the number of detected photons, any lost signal will not reduce security but will decrease the amount of key generated. A dedicated fine pointing system would help reduce the amount of photons that are lost within the satellite after collection by the primary optics. We have designed a novel fine pointing apparatus, along with the Institute national d’optique and Neptec Design Group, to assist photon coupling into multimode fibres after the photons undergo polarisation analysis on a QKD receiver. This system keeps in mind weight and volume restrictions imposed by future space applications. It also mitigates polarisation error through the design of custom mirror coatings. Pointing accuracy of the APT is sufficient to allow QKD to be performed even with angular disturbances to the receiver telescope and fluctuations of the laser beacon.

This presentation will outline the APT design concept, summarize the fine pointing performance of the unit as demonstrated through various laboratory tests, and discuss plans to use the device to perform outdoor QKD trials with receivers aboard trucks, boats or aircraft.

Primary author: PUGH, Christopher (University of Waterloo) Co-author: Dr JENNEWEIN, Thomas (Institute for Quantum Computing) Presenter: PUGH, Christopher (University of Waterloo) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 151 2016 CAP Congr … / Report of Contributions Towards correcting atmospheric t …

Contribution ID: 1133 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Towards correcting atmospheric turbulence effects via pump beam control in a down conversion process Tuesday, 14 June 2016 16:45 (15 minutes)

Quantum Communication can be done using single photons generated via spontaneous parametric down conversion (SPDC). Since these protocols only use the signals that are collected by the receiver, the system is not as negatively affected by occasional drop outs as compared to classical communication protocols. In order to collect as many photons as possible, it is necessary to have a mechanism to guide them to the receiver. The photon pairs that are created through the process of SPDC conserve their momentumand are therefore spatially correlated. The temporal and spatial modes of the photons can be adjusted according to the specific requirements of a transmission link. The correction for tip/tilt errorsin pointing is usually performed on the transmitted beam itself. However, due to the correlations between the pump beam and the down converted photons, it is possible to manipulate the pump beam instead of the transmitted arm to achieve a similar effect. This technique can be veryuseful for Quantum Communication protocols since interfering with the transmitted arm can cause alterations to the polarisation and other properties and thus destroy the encoding in the photon. By manipulating the pump, the transmitted arm remains untouched but is guided towards the receiver for a higher collection efficiency.

We have developed a theoretical model to calculate the effect of varying the pump beam angle into the nonlinear crystal on the signal photon while holding the idler photon in a fixed position. The technique we use to observe these correlations is based on an array of single photon avalanche diodes (SPAD), offering temporal and spatial resolution on a single photon level. Here we investigate the possibility to control the spatial characteristics of one of the down converted photons by altering the direction of the pump beam.

Primary author: Mr PUGH, Christopher (University of Waterloo/Institute for Quantum Comput- ing)

Co-authors: Dr KOLENDERSKI, Piotr (Nicolaus Copernicus University); Dr JENNEWEIN, Thomas (Institute for Quantum Computing)

Presenter: Mr PUGH, Christopher (University of Waterloo/Institute for Quantum Computing) Session Classification: T3-3 Quantum Computing and Coherent Control (DAMOPC) /Cal- cul quantique et contrôle cohérent (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 152 2016 CAP Congr … / Report of Contributions Diffusion-Controlled Drug Release …

Contribution ID: 1134 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Diffusion-Controlled Drug Release: Beyond Weibull Thursday, 16 June 2016 08:30 (15 minutes)

Characterizing and predicting time release profiles is crucial in order to optimize the performance of drug devices. The exact analytical expression for the drug release function, which is a solution of the diffusion equation, is generally too complex to be employed for this purpose. Therefore, it is convenient to use simpler fitting functions which reproduce qualitatively the overall release profile. When the dominant release process is diffusion, the most used fitting function isastretch exponential called Weibull function. Nevertheless, the Weibull function has a major drawback: it does not reproduce the short- and long-time behaviors imposed by diffusion theory. We propose a new fitting function, built from a semi-analytical approach, which reduces correctly toboth limiting behaviors. Therefore, it allows to extract a crossover time between the transient and the stationary states which is crucial to characterize the release dynamic. Furthermore, thanks to Lattice Monte Carlo simulations, we show that our fitting function greatly outperforms theWeibull function and enables one to obtain the microscopic physical properties of the drug release system.

Primary author: IGNACIO, maxime (University of Ottawa) Co-authors: Prof. SLATER, Gary (University of Ottawa); Dr CHUBYNSKY, Mykyta (University of Ottawa)

Presenter: IGNACIO, maxime (University of Ottawa) Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 153 2016 CAP Congr … / Report of Contributions Deuterium NMR and Rheology of …

Contribution ID: 1135 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Deuterium NMR and Rheology of Microgel Colloids at Ambient and High Pressure Monday, 13 June 2016 11:45 (15 minutes)

Microgel colloids exhibit a polymer collapse transition resulting in a large reduction in colloid size at high temperatures or pressures. They have potential for drug delivery and chemical separation applications that involve uptake and release of small or biological molecules. Our goal is to obtain a microscopic understanding of the structure and dynamics of the microgels by examining the temperature and pressure dependence of collapse transition in order to investigate the energetic and entropic contributions to polymer collapse. The nature of this collapse transition can be controlled by crosslink density (Cd) thus we plan a systematic study as a function of Cd. We have used deuterium NMR (2H-NMR) to probe the microscopic dynamics of cross-linked poly- N-isopropylacrylamide (p-nipam) chains, in microgel colloids, as a function of temperature and pressure. Dynamic light scattering (DLS) and rheology were employed to characterize the microgels and probe their macroscopic properties. The observed changes in particle size and viscosity by DLS and rheology measurements with temperature were related to changes in the internal structure of the microgel particle investigated by 2H-NMR. Microgels colloids were synthesized with deuteron labels on the nipam side chains (d7-nipam) or on the backbone (d3-nipam). 2H-NMR spectra of both suspensions indicated freely moving chains in the microgel particle at low temperature, and a nearly immobilized fraction of the d3-nipam suspension above 35℃, consistent with DLS observations of transition from swollen to collapsed colloids. We continue to investigate the role of crosslink density in microstructure and macroscopic response by 2H-NMR, rheology and DLS.

Primary author: Ms SBEIH, Suhad (Memorial University of Newfoundland) Co-authors: Dr YETHIRAJ, Anand (Memorial University of Newfoundland); Prof. MORROW, Michael (Memorial University of Newfoundland); Dr MOHANTY, Priti (KIIT University) Presenter: Ms SBEIH, Suhad (Memorial University of Newfoundland) Session Classification: M1-5 Soft Matter and Polymers (DCMMP-DPMB) / Matière molle et polymères (DPMCM-DPMB)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 154 2016 CAP Congr … / Report of Contributions Dynamic analysis of the polar ion …

Contribution ID: 1136 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Dynamic analysis of the polar ionosphere during scintillation: towards an optimization of the detrending frequency Tuesday, 14 June 2016 16:45 (15 minutes)

In the context of scintillation, the chaotic behavior of the ionospheric plasma in the high latitude region is investigated using the GPS (Global Positioning System). The study is carried out with the use of the data from the Canadian High Arctic Ionospheric Network (CHAIN). The L1 GPS signal, sampled at 50 Hz, is characterized and analyzed. The statistical analysis is performed on both components of the signal, namely the amplitude and the phase. The Tsalis entropy is constructed for the signal, and along a multiscale analysis, criteria for the determination of the optimum detrending frequency, delimiting the scintillation components from the background variations, are defined. I will present the method used in this study and discuss the importance of thedetrend- ing frequency in the mitigation process of the effect of the ionospheric scintillation on the Global Navigational Satellite System (GNSS).

Primary author: MEZAOUI, Hichem (University of New Brunswick) Co-authors: HAMZA, Abdelhaq M (University of New Brunswick); THAYYIL, Jayachandran (Uni- versity of New Brunswick)

Presenter: MEZAOUI, Hichem (University of New Brunswick) Session Classification: T3-9 Atmospheric and Space Physics (DASP) / Physique atmosphérique et de l’espace II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 155 2016 CAP Congr … / Report of Contributions Recent Results and Future Plans fo …

Contribution ID: 1137 Type: Invited Speaker / Conférencier invité

Recent Results and Future Plans for Dark Matter Searches with PICO Monday, 13 June 2016 15:45 (30 minutes)

The PICO experimental program at SNOLAB uses superheated bubble chambers to searchfor evidence of dark matter primarily through spin-dependent interactions on ¹⁹F in C₃F₈. Recoiling nuclei from WIMP-nucleon interactions in the active fluid deposit enough energy locally to initiate a phase transition in the fluid. The bubbleswhich form are observed with stereo cameras and their acoustic signature is recorded by sensitive piezoelectric transducers. By controlling the degree of superheat, the detector can be made insensitive to gamma and electron backgrounds. Alpha particles with relatively longer tracks have a distinctly different acoustic signal when compared to nuclear recoils which enables this background tobe identified and discriminated against. The recent results from the PICO collaboration will bepre- sented, along with an outlook for the future program with this unique technology.

Primary author: NOBLE, Tony (Queen’s University) Presenter: NOBLE, Tony (Queen’s University) Session Classification: M3-5 Cosmic frontier: Dark matter I (PPD) / Frontière cosmique: matière sombre I (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 156 2016 CAP Congr … / Report of Contributions An absolute neutron flux measure …

Contribution ID: 1138 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

An absolute neutron flux measurement of the 51V (p, n)51Cr reaction for PICO bubble chambers calibration Tuesday, 14 June 2016 19:04 (2 minutes)

The PICO collaboration presently operates two bubbles chambers for the search of darkmatterin the SNOLAB underground laboratory in Sudbury, Ontario. Multiple calibration chambers were created to understand the detectors’ behavior when exposed to different background radiation. The PICO 0.1 bubble chamber is used to perform neutron calibration at the Tandem Van deGraaff facility of the Université de Montréal. The electrostatic accelerator uses a 1.6 MeV proton beamto produce mono-energetic neutrons from the 51V (p, n)51Cr reaction off a 14 nm thick vanadium target. Only the relative neutron flux had been measured with either one ortwo 3He neutron counters since the beginning of the previous PICASSO experiment as a mean to normalize the chamber’s count rate. A measurement of the absolute neutron flux was therefore made by Proton Activation Analysis (PAA). 51Cr produced by the nuclear reaction always decays by beta decay, characterized by a half-life of 27.7 days, with the emission of a 320 keV gamma roughly 10% of the time. The activation of a new Vanadium target, followed by a gamma emission analysis with a calibrated High Purity Germanium detector (HPGe) enabled us to calculate the total amount of nuclear reactions triggered during the activation. The 3He counters’ efficiencies and absolute neutron flux where thereafter determined. This poster presentation describes the experimental setup and present the results of the measurement.

Primary author: GIRARD, Frédéric (Laurentian University) Presenter: GIRARD, Frédéric (Laurentian University) Session Classification: DNP Poster Session with beer / Session d’affiches, avec bière DPN

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 157 2016 CAP Congr … / Report of Contributions Dynamique ultra-rapide de polarit …

Contribution ID: 1139 Type: Invited Speaker / Conférencier invité

Dynamique ultra-rapide de polaritons excitoniques: de leur création à leur condensation dans un état macroscopique quantique Wednesday, 15 June 2016 15:15 (30 minutes)

Récents progrès dans les techniques de fabrication de microcavités à semi-conducteurs ont permis d’observer des nouveaux états propres issus du couplage fort entre un champ photonique fortement confiné et des excitons de puits quantiques. Ces états, appelés exciton-polaritons, ontun caractère mixte lumière-matière qui leur confère des propriétés très particulières. Notamment, leur faible masse leur permet de former, à des températures relativement élevées (au-delà de 4 K), un état quantique macroscopique similaire aux condensats de Bose-Einstein (CBE). Depuis, de nombreux travaux de recherche se sont basés sur la détection de la photoluminescence émise par la microcavité pour caractériser et analyser le CBE. Toutefois, ces expériences ne permettent que de sonder la composante photonique des polaritons sans possibilité d’adresser directement la partie matière. De par sa structure semi-conductrice similaire à un autre système cohérent, le laser en microcavité, un doute s’est d’ailleurs installé sur la nature exacte du CBE et de ses propriétés qui le démarquent du laser. Notre approche expérimentale se base sur l’utilisation de la spectroscopie térahertz (THz) résolue en temps pour sonder la formation du CBE à partir de ses interactions mi- croscopiques. Cette technique nous permet non seulement d’accéder directement à la composante matière des polaritons, mais elle donne aussi accès à une dynamique ultra-rapide très riche qui comprend la formation d’exciton-polaritons à partir de porteurs de charges libres et le processus complet de condensation qui s’en suit [1]. Nos résultats démontrent directement l’existence de la composante matière de l’état quantique macroscopique établissant ainsi une différence fondamen- tale entre le CBE et le laser en microcavité.

[1] Ménard, J.-M. et al. Revealing the dark side of a bright exciton-polariton condensate. Nature Communications 5, 4648 (2014).

Primary author: Prof. MÉNARD, Jean-Michel (University of Ottawa, University of Regensburg)

Co-authors: Dr AMO, Alberto (CNRS-Laboratoire de Photonique et Nanostructures); Dr LEMAÎTRE, Aristide (CNRS-Laboratoire de Photonique et Nanostructures); Dr ELISABETH, Galopin (CNRS-Labo- ratoire de Photonique et Nanostructures); Dr BLOCH, Jacqueline (CNRS-Laboratoire de Photonique et Nanostructures); Mrs URSULA, Leierseder (University of Regensburg); Dr PORER, Michael (Univer- sity of Regensburg); Mr CHRISTOPH, Poellmann (University of Regensburg); Prof. HUBER, Rupert (University of Regensburg)

Presenter: Prof. MÉNARD, Jean-Michel (University of Ottawa, University of Regensburg) Session Classification: W3-3 Quantum Transport (DCMMP) / Transport quantique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 158 2016 CAP Congr … / Report of Contributions Ultrafast dynamics of a charge den …

Contribution ID: 1140 Type: Oral (Non-Student) / orale (non-étudiant)

Ultrafast dynamics of a charge density wave in non-equilibrium in 1T-TiSe2 Wednesday, 15 June 2016 10:15 (15 minutes)

Spontaneously broken symmetries in solids often result from many-body interactions that fall outside the scope of conventional solid-state models. As a consequence, some of the most fascinating phase transitions such as stripe formation, unconventional superconductivity or colossal magnetoresistance are still not fully understood. Time-resolved multi-terahertz spectroscopy is an ideal optical technique to resolve the microscopic interactions in complex materials and to trace their dynamics on an ultrafast time scale. We apply this optical technique to investigate the non-equilibrium dynamics of a charge density wave (CDW), an intriguing phase characterized by a static modulation of the electronic charge distribution accompanied by a periodic lattice distortion (PLD). In the transition metal dichalcogenide 1T-TiSe2, the CDW occurs at temperatures below 200 K and has been studied with several experimental techniques such as x-ray diffraction and photoemission experiments. These experiments have highlighted two potential driving mechanisms of the phase transition: excitonic correlations and a Jahn-Teller lattice distortion. Despite intense efforts, both in experiments and theory, no consensus could be reached on which oneof these interaction mechanisms is the actual driving force of the CDW and which one is simply a consequence of it. Here we perturb the CDW in a 80 nm thin film of single crystalline TiSe2 and monitor the subsequent ultrafast dynamics of the two constituent orders via PLD induced phonons resonances and characteristic terahertz fingerprints of excitonic order [1]. Our experiment reveals a new transient phase in which the PLD persists in a coherently oscillating state while the excitonic order is entirely quenched. These results prove that the CDW transition in 1T-TiSe2 isnot solely driven by excitonic correlations, but also by a Jahn-Teller distortion in a cooperative process. Our low-energy spectroscopic technique of ultrafast dynamics associated to a complex long-range order provides a new benchmark for exploring this fascinating class of quantum phenomena in strongly correlated materials.

[1] M. Porer et al. Non-thermal separation of electronic and structural orders in a persisting charge density wave. Nature Materials 13, 857 (2014)

Primary author: Prof. MÉNARD, Jean-Michel (University of Ottawa, University of Regensburg)

Co-authors: Dr DACHRAOUI, Hatem (University of Bielefeld); Prof. DEMSAR, Jure (Ilmenau Uni- versity of Technology); Prof. ROSSNAGEL, Kai (University of Kiel); Dr MOUCHLIADIS, Leonidas (University of Crete & FORTH/IESL); Dr PORER, Michael (University of Regensburg); Prof. KON- STANTINOS, Perakis (University of Crete & FORTH/IESL); Prof. HUBER, Rupert (University of Re- gensburg); Prof. HEINZMANN, Ulrich (University of Bielefeld); Mrs LEIERSEDER, Ursula (University of Regensburg)

Presenter: Prof. MÉNARD, Jean-Michel (University of Ottawa, University of Regensburg) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 159 2016 CAP Congr … / Report of Contributions Towards efficient second-order no …

Contribution ID: 1141 Type: Invited Speaker / Conférencier invité

Towards efficient second-order nonlinear optical processes in hollow-core photonic crystal fibres Wednesday, 15 June 2016 08:30 (30 minutes)

Second-order solid-state nonlinear crystals are used for a wide variety of parametric frequency- conversion processes including the generation of second harmonic, degenerate entangled photon pairs and phase-locked terahertz transients. These crystals can have a high χ(2) coefficient enabling efficient nonlinear effects, but their spectral range of operation is limited because oftheir strong linear dispersion properties and their relatively narrow transmission window. Gas-filled hollow-core photonic crystal fibres (PCFs) are efficient nonlinear optical platforms featuring low- loss broadband guidance and tunable dispersion (via an adjustable gas pressure) [1]. However, both the gas and the glass are amorphous materials with a vanishingly small χ(2). Here we rely on a strong dc electric field Edc, which breaks the centrosymmetry of the gas inside the fibre and (2) (3) induces an effective χ ∝ χ Edc, to enable a new design of second-order nonlinear medium with highly tunable linear properties [2]. We demonstrate the concept by monitoring the electric- field-induced second harmonic generation (EFISH) when pumping a xenon-filled kagomé PCFwith nanosecond and femtosecond pulses at λ ∼ 1 µm. A second harmonic (SH) signal is detected at Xe pressures where intermodal phase-matching is satisfied. For example, SH can be generated inthe LP02 mode when the Xe pressure is 3.85 bar and the pump beam is launched into the fundamental LP01 mode. Also, by means of quasi-phase-matching (QPM) using a periodic electrode, we demonstrate generation of SH in the low-loss LP01 mode. We observe a maximum conversion efficiency of 2.5 × 10−3 % with a non-optimized electrode configuration and we discuss modified designs that will lead to larger electric-field-induced optical nonlinearities. [1] P. St.J. Russell et al. Hollow-core photonic crystal fibres for gas-based nonlinear optics. Nature Photonics 8, 278 (2014).

[2] J.-M. Ménard and P. St.J. Russell. Phase-matched electric-field-induced second-harmonic generation in Xe-filled hollow-core photonic crystal fiber. Optics Letters 40, 3679 (2015).

Primary author: Prof. MÉNARD, Jean-Michel (University of Ottawa, Max Planck Institute for the Science of Light)

Co-author: Prof. RUSSELL, Philip (Max Planck Institute for the Science of Light) Presenter: Prof. MÉNARD, Jean-Michel (University of Ottawa, Max Planck Institute for the Science of Light) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 160 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Characterizatio …

Contribution ID: 1142 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

**WITHDRAWN** Characterization and mitigation of particulate sources of backgrounds in the PICO-60 experiment Tuesday, 14 June 2016 14:30 (15 minutes)

The PICO experiment is a dark matter search using superheated liquidC3F8. The experiment operates two bubble chambers, PICO-2L and PICO-60, at the SNOLAB facility 2km underground, and is designed to be most sensitive to spin-carrying dark matter particles with a mass range of 10-10,000 GeV/c2. PICO bubble chambers are threshold detectors that can be operated within a set of conditions where they are insensitive to minimally ionizing particles. Acoustic, pressure and video information is used to discriminate between nuclear recoil events and background alpha events.

PICO-60 is presently being upgraded to perform dark matter searches with 60 kg of active liquid at a threshold energy of 3.2 keV. A large fraction of the background events in the previous run of PICO-60 with CF3I exhibited behaviours consistent with particulates in the active volume. In this talk, an overview of the particulate contamination and background events with a possible particulate origin will be presented. The procedure developed to identify the particulates and to characterize them and their sources will be discussed, along with assay results from previous run. Strategies for mitigation of the generation mechanism and modifications to the detector to eliminate the particulate load on the detector in the next run are also presented.

Primary author: MITRA, Pitam (University of Alberta) Presenter: MITRA, Pitam (University of Alberta) Session Classification: T2-3 Cosmic Frontier: Dark Matter II (PPD) / Frontière cosmique: matière sombre II (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 161 2016 CAP Congr … / Report of Contributions *WITHDRAWN** Status of the up …

Contribution ID: 1143 Type: Oral (Non-Student) / orale (non-étudiant)

*WITHDRAWN** Status of the upgraded PICO-60 experiment Thursday, 16 June 2016 09:00 (15 minutes)

The PICO collaboration searches for dark matter particles with superheated fluid detectorsop- erated under conditions in which they are insensitive to the electron recoils that constitute the traditionally dominant background for direct detection searches. By measuring the acoustic energy emitted during bubble formation, these detectors are also able to discriminate against alpha particle backgrounds. The current target fluid, C3F8, allows for excellent sensitivity to the spin- dependent WIMP-proton cross section due to its high density of 19F. The chamber can be operated with other target fluids with relatively minor changes to detector operations, allowing study ofthe coupling of dark matter to ordinary matter in the case of a positive signal.

The PICO-60 experiment has been upgraded since the completion of the previous run in May2014. The original 20 L CF3I target fluid has been exchanged for 40 L ofC3F8. There have been corresponding upgrades to the stereoscopic camera system to allow imaging of the doubled volume and detailed studies of bubble growth, as well as many hardware improvements focused on eliminating the particulate contamination that was one source of backgrounds in the detector. This talk presents the status of the experiment and these upgrades.

Primary author: FALLOWS, Scott (University of Alberta) Presenter: FALLOWS, Scott (University of Alberta) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 162 2016 CAP Congr … / Report of Contributions Measurement of Curium Fluoride …

Contribution ID: 1144 Type: Poster (Non-Student) / affiche (non-étudiant)

Measurement of Curium Fluoride Anions by Accelerator Mass Spectrometry Tuesday, 14 June 2016 19:00 (2 minutes)

Radiotoxic actinides including 236U, 239/240Pu, 241Am, and 244Cm are found in spent nuclear fuels and high-level radioactive waste. In particular 244Cm (half-life 18.1 y) is a useful tracer of exposure to radioactive materials, but dose assessments typically require measuring atto- to femtogram levels of curium in biological and environmental media. Accelerator mass spectrometry (AMS) is the only technique able to measure such ultra-low level abundances, but suffers from relatively poor ionization efficiencies for curium oxides made in sputter-ion sources used by AMS. Inourwork (i.e. Cornett et al [NIMB 2015]) we have experimented with a variety of sample chemistries and target matrices in an ongoing effort to boost anion currents for AMS actinide measurements ofU, Am and Pu. To-date, the addition of PbF2 is shown to boost specific fluoride anions for actinides, and the addition of Si and Ta appears to form the most promising matrix for UO– current enhancement, resulting in a 3x increase of anion currents (Kazi et al [this meeting]). The situation for Cm remains unknown. Here we present the first AMS spectrum of curium fluoride anions generated during sputtering. We use samples spiked with 244Cm, and assess whether curium fluorides, with the assistance of PbF2, give an improvement in beam current compared to curium oxides, and whether Si/Ta matrices further boost curium oxide anion currents. The ability to increase curium currents may allow lower-level measurements of 244Cm in natural samples, and may be useful for studies of even rarer heaver elements including Bk, Cf and others by AMS.

Primary author: CHARLES, Christopher (University of Ottawa) Co-authors: Prof. CORNETT, Jack (University of Ottawa); KIESER, William (University of Ot- tawa); ZHAO, Xiaolei (University of Ottawa); KAZI, Zakir (University of Ottawa) Presenter: CHARLES, Christopher (University of Ottawa) Session Classification: DIAP Poster Session with beer / Session d’affiches, avec bière DPIA

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 163 2016 CAP Congr … / Report of Contributions Reentrant phase transitions and va …

Contribution ID: 1145 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Reentrant phase transitions and van der Waals behaviour for hairy black holes Tuesday, 14 June 2016 09:45 (15 minutes)

The thermodynamics of black holes has remained a subject of interest for more than 40years. Recently attention has been devoted to the thermodynamics of black holes in extended phase space where the cosmological constant is treated as a thermodynamic variable with the interpretation of pressure. Within this framework, Kubiznak and Mann demonstrated that the charged anti de Sitter black hole is thermodynamically analogous to the van der Waals fluid. A plethora of subsequent work deepened this connection, finding examples of van der Waals behaviour, triple points, and (multiple) reentrant phase transitions for AdS black holes. In my talk I will discuss recent work where we have applied this formalism for the first time to hairy AdS black holes by considering Einstein-Maxwell-AdS gravity conformally coupled to a scalar field in five dimensions. In the absence of electric charge we recover a van der Waals analogy for these black holes for particular configurations of the scalar field. More interesting behaviour is found in the charged case,where both van der Waals behaviour and reentrant phase transitions are seen to occur, the latter due to a modified Bekenstein-Hawking entropy of these black holes. These black holes have an interesting zero-entropy limit at which all critical behaviour ceases.

Primary author: HENNIGAR, Robie Co-author: MANN, Robert (University of Waterloo) Presenter: HENNIGAR, Robie Session Classification: T1-8 General Relaivity (DTP) / Relativité générale (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 164 2016 CAP Congr … / Report of Contributions How redesigning our first-year lab …

Contribution ID: 1146 Type: Oral (Non-Student) / orale (non-étudiant)

How redesigning our first-year labs grew into a “Gesamtkunstwerk” in Physics Education Tuesday, 14 June 2016 08:30 (15 minutes)

In this talk, we’ll tell the story of how an initial idea for course redesign grew into something much bigger, incorporating ideas from Physics Education research and the Physics Education community, design of learning spaces, SOTL (scholarship of teaching and learning), building a community of practice etc. along the way – thus “Gesamtkunstwerk”. We will describe how funding for teaching lab renovation and new equipment was combined with turning the lab courses from cookbook style to inquiry-based, including group work with assigned roles, and in-class feedback and assessment. The design team, in consultation with a large number of faculty members, shifted thelearning focus towards a more reflective approach to making measurements and analyzing data, andmade an introduction to the iterative process of doing science explicit in the course learning goals. This focus allowed much shorter lab instructions, now completely online instead of printed, which required thorough exploration of the technical possibilities of our learning management system, Canvas. We tested our original design in a two-stage process involving faculty, high school/first year students and grad students, using pre-/post-tests, focus groups and observations. We’ll show examples for the labs, results from the two-stage testing (specifically on alignment of the activities and assessment methods with the learning goals) and how they were included in the course design, as well as observations from the first round of implementations. We’ll also point out some spin-off projects, such as the need for an Excel tutorial and restructuring of the teaching materials archive.

Primary author: AHRENSMEIER, Daria (Simon Fraser University) Co-authors: FRISKEN, Barbara (Simon Fraser University); MCGUIRK, Jeffrey (Simon Fraser Uni- versity); JOHNSON, Sarah (Simon Fraser University) Presenter: AHRENSMEIER, Daria (Simon Fraser University) Session Classification: T1-2 Lab Revitalisation: Innovative and Distance Undergraduate Labs (DPE) / Revitalisation de labos : laboratoires de premier cycle innovateurs et à distance (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 165 2016 CAP Congr … / Report of Contributions Measurement of 236U in Biota by a …

Contribution ID: 1147 Type: Oral (Non-Student) / orale (non-étudiant)

Measurement of 236U in Biota by accelerator mass spectrometry. Tuesday, 14 June 2016 08:30 (15 minutes)

236U (half-life 2.34×107 y) is a radioisotope of uranium of key importance for tracing the move- ment of nuclear waste through the environment. Accelerator mass spectrometry (AMS) is the most robust and capable method for measuring 236U, which has a natural abundance range between 10−8 to 10−12 or lower. Here we study 236U uptake in biota samples (plants, animals) and river water samples collected in the region surrounding the Chalk River Nuclear laboratories (Chalk River, ON) by AMS. Plants included the common submerged aquatic waterweeds elodea, myriophyllum and vallisneria. Animals consisted of a variety of freshwater mussle (unionids), an amphipod crustacean (gammarus), a freshwater crustacean resembling small lobsters (cray- fish), a small freshwater minnow (spot- tail), a freshwater fish (yellow perch) and a mayfly variety (heptageniids). Samples were ashed, digested, spiked with a 233U tracer and cleaned through a single-pass UTEVA chemistry in HNO3 followed by U elution in HCl. Post-load UTEVA washes were saved for 90Sr analysis (Francisco et al [this meeting]). A fraction of the final U eluent was removed for 235U/238U isotopic composition measurements by multi-collector ICP-MS, and the remaining U fraction co-precipitated in iron hydroxide, calcinated, and pressed into AMS targets with an appropriate matrix to optimize uranium emission (Kazi et al [this meeting]). Water samples were processed by direct iron hydroxide co-precipitation of U followed by UTEVA chemistry. We present the AMS analytical testing and results of 236U partitioning and the 235U/238U isotopic compositions of these biota and water samples.

Primary author: CHARLES, Christopher (University of Ottawa) Co-authors: Dr FRANCISCO, Barbara (University of Ottawa); MACDONALD, Cole (University of Ottawa); Prof. CORNETT, Jack (University of Ottawa); Mr GRINTER, Michael (University of Ot- tawa); Dr DAVID, Rowan (Chalk River Laboratories); ZHAO, Xiaolei (University of Ottawa); KAZI, Zakir (University of Ottawa)

Presenter: CHARLES, Christopher (University of Ottawa) Session Classification: T1-7 Mass spectrometry in nuclear waste management and control at the border (DIAP-DIMP) / Spectrométrie de masse dans la gestion des déchets nucléaires et surveillance à la frontière (DPIA-DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 166 2016 CAP Congr … / Report of Contributions 45◦ Ion Motion in an RFQ: a Study …

Contribution ID: 1148 Type: Poster (Non-Student) / affiche (non-étudiant)

45◦ Ion Motion in an RFQ: a Study of SIMION 8.1 for Modeling Isobar Separator Beam Dynamics in AMS Tuesday, 14 June 2016 19:02 (2 minutes)

Radiofrequency multipoles (RFM’s) are a promising new technology in accelerator mass spectrometry (AMS) for contributing to the removal of atomic and molecular isobars when combined with appropriate gases. The motion of charged particles in vacuo through the hyperbolic RFQ version are governed by the Mathieu functions for which convenient algebraic solutions exist for direct, continuous calculation of position, velocity and energy of a particle over a range of initial conditions and RF inputs for the continuous RFQ. Though the Mathieu solutions for the RFQ are well known, the ability to model reliably cation and anion trajectories in a general isobar separator column for AMS remains incompletely explored. This difficulty is due to issues inherent to matching an RFM to particle beams from AMS sputter-ion sources, i.e.: (1) large time-dependent phase- space variations of the beams into the RFQ, (2) space-charge effects, (3) the effect of (residual) gas collisions during deceleration, reactions and final re-acceleration, and (4) geometric impedances associated with an RFM column. A key reason for using the software SIMION extensively is to assist the designs of such devices, thus it is highly desirable to ensure SIMION results are reliable by comparing it to purely algebraic solutions. Here we report one such comparable case: the study of the ion motion in an RFQ for the extreme 45◦-limit between the hyperbolic poles under vacuum conditions. Particle positions, trajectories and energies for the RFQ ions initially at ±45◦ are compared with the “direct” Mathematica calculations and those obtained by SIMION “simulations”. We confirm that SIMION results are trustworthy for assisting RFM device designs.

Primary author: CHARLES, Christopher (University of Ottawa) Co-authors: Prof. LITHERLAND, Albert E (University of Toronto); ZHAO, Xiaolei (University of Ottawa)

Presenter: CHARLES, Christopher (University of Ottawa) Session Classification: DNP Poster Session with beer / Session d’affiches, avec bière DPN

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 167 2016 CAP Congr … / Report of Contributions NEWS experiment: results from a …

Contribution ID: 1149 Type: Oral (Non-Student) / orale (non-étudiant)

NEWS experiment: results from a 60 cm prototype run with Neon Thursday, 16 June 2016 09:45 (15 minutes)

Modern precision astronomy strongly suggests the presence of Dark Matter particles whose hunt is among the forefront activities in particle physics nowadays. The NEWS-SNO project (News Experiment With Spheres in SNOLAB) is setting up to probe very low mass Dark Matter particles using a large spherical gaseous detector and very light target nuclei such as H, He and Ne. A 60 cm diameter prototype filled with neon gas was installed and operated in Modane (Laboratoire Souterrain de Modane) with a very low threshold which allowed to investigate less than 10 GeV WIMP (Weakly Interacting Massive Particle) Dark Matter. The analysis of the collected datato extract a Dark Matter signal will be presented and discussed. The attained performance pavesthe way forward for the larger scale detector to be installed at SNOLAB.

Primary author: Dr KAMAHA, Alvine (Queen’s University) Presenter: Dr KAMAHA, Alvine (Queen’s University) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 168 2016 CAP Congr … / Report of Contributions Online versus paper homework – …

Contribution ID: 1150 Type: Oral (Non-Student) / orale (non-étudiant)

Online versus paper homework – how does it affect student experience, attitudes, and learning? Thursday, 16 June 2016 08:45 (15 minutes)

In many first-year physics courses, students use publisher-created online homework systems that provide student learning supports including hints to address specific mistakes and additional resources such as tutorials, videos, or simulations. Compared to traditional paper-based homework, these online systems have advantages (e.g. 24/7 hint access, problems often Physics Education Research-informed) as well as disadvantages (e.g. very expensive, potential privacy or technical issues).

To learn more about how students use and perceive different homework formats, as well as the realized effects of their advantages/disadvantages, we provided students in an introductory physics class with both an e-textbook with publisher-created online homework problems and equivalent paper homework problems. Each student was randomly assigned to a group that was graded on either the online or the written homework to separate students into two groups. Students were provided access to both forms of homework for equitability purposes, but we found the vast majority of students exclusively used the form of homework they were graded on. Using surveys at the beginning and at the end of the term, we studied the students’ attitudes towards online vs paper homework, how they used it, their satisfaction with the format, the relative effect on their grades, as well as other questions related to course behavior and preferences. We will report our findings from these surveys, including changes between the beginning and the end of the term,as well as the educational implications of our findings.

Primary author: AHRENSMEIER, Daria (Simon Fraser University) Co-authors: HUM, Gregory (Simon Fraser University); MCGUIRK, Jeffrey (Simon Fraser Univer- sity)

Presenter: AHRENSMEIER, Daria (Simon Fraser University) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 169 2016 CAP Congr … / Report of Contributions High-Statistics β+/EC-Decay Stu …

Contribution ID: 1151 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

High-Statistics β+/EC-Decay Study of 122Xe Tuesday, 14 June 2016 13:45 (15 minutes)

The Xe isotopes are centrally located in the Z > 50, N < 82 region that displays an extraordinarily smooth evolution of simple collective signatures. However, the collectivity of excited states in this region is very poorly characterized because of a general lack of spectroscopic data for low-spin states that provide measures of collective properties such as relative and absolute B(E2) decay strengths and the occurrence of E0 decays. There are spectroscopic hints to unusual structures in this region. + 124−132 The 03 states in Xe are very strongly populated in (3He, n) reactions, suggesting a pairing vibrational structure influenced by proton subshell gaps, perhaps leading to shape-coexistence that could give rise to strong E0 transitions. Recent work on 124Xe [1] has established nearly + identical quadrupole collectivity for the pairing vibrational 03 band and 122 + the ground state band. However, in Xe, the 03 state has not been firmly identified. A high-statistics 122Cs β+/EC decay experiment to obtain detailed spectroscopic data for low-spin states was performed at the TRIUMF-ISAC facility using the 8π γ-ray spectrometer and its auxiliary detectors including PACES, an array of five Si(Li) detectors, for conversion electrons spectroscopy. The status of the data analysis and preliminary results will be presented.

[1] A.J. Radich et al., Phys. Rev. C 91, 044320 (2015).

Primary author: JIGMEDDORJ, Badamsambuu (University of Guelph) Co-authors: GARNSWORTHY, Adam (TRIUMF); RADICH, Allison (University of Guelph); HA- DINIA, Baharak (University of Guelph); SVENSSON, Carl (University of Guelph); ANDREOIU, Co- rina (Simon Fraser University); CROSS, David (Simon Fraser University); RAND, Evan (University of Guelph); BALL, Gordon (TRIUMF); HACKMAN, Greg (TRIUMF); PARK, Jason (TRIUMF); PORE, Jennifer (Simon Fraser University); WOOD, John (Georgia Institute of Technology); MOUKADDAM, Mohamad (TRIUMF); RAJABALI, Mustafa (TRIUMF); GARRETT, Paul (University of Guelph); VOSS, Phil (Simon Fraser University); YATES, Steven (University of Kentucky); BRUHN, T (Simon Fraser University); RIZMAN, Usman (Simon Fraser University); WANG, Zhimin (TRIUMF) Presenter: JIGMEDDORJ, Badamsambuu (University of Guelph) Session Classification: T2-1 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 170 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Phase-imaging …

Contribution ID: 1152 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

**WITHDRAWN** Phase-imaging mass measurements with the Canadian Penning trap mass spectrometer Monday, 13 June 2016 16:45 (15 minutes)

Roughly half of the elements heavier than iron are thought to be produced through the astrophysical rapid-neutron capture process of nucleosynthesis. Despite its large influence in explaining the observed abundance of heavy elements, much of the r process is still poorly understood. A more thorough library of nuclear data, particularly masses, of neutron-rich nuclei is needed to improve the accuracy and progression of r-process calculations. The Canadian Penning trap mass spectrometer (CPT) is currently located in the CARIBU facility at Argonne National Laboratory where intense radioactive beams of neutron-rich nuclei are produced from the spontaneous fission of 252Cf. Since its move to CARIBU in 2010, the CPT has successfully measured the masses of more than 110 isotopes to a typical precision of 15 keV/c2 by measuring the cyclotron frequency of ions through a time-of-flight (TOF) technique. An upgrade to a position-sensitive microchannel plate detector at the CPT has facilitated a contemporary technique in the determination of masses by measuring the phases of orbital motion of trapped ions. This phase-imaging method is intrinsically more efficient than the TOF technique, and provides an order of magnitude improvement inmass- resolving power without loss in precision, allowing access to more weakly produced isotopes with shorter half-lives than was previously achievable at CARIBU. The low-energy beamline at CARIBU was recently fitted with a multi-reflection time-of-flight mass separator (MR-TOF) which improved beam purity by more than an order of magnitude. In a preliminary measurement campaign the phase-imaging technique, buoyed by the MR-TOF, has yielded the masses of eight previously un- measured ground-state rare-earth isotopes, and another three nuclear isomers whose masses were directly measured for the first time. These results and future plans to probe another 1-3 neutrons from stability will be discussed.

Primary author: ORFORD, Rodney (McGill University) Presenter: ORFORD, Rodney (McGill University) Session Classification: M3-1 Nuclear Astrophysics (DNP) / Astrophysique nucléaire (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 171 2016 CAP Congr … / Report of Contributions The Ultra-Cold Neutron Facility at…

Contribution ID: 1153 Type: Oral (Non-Student) / orale (non-étudiant)

The Ultra-Cold Neutron Facility at TRIUMF Wednesday, 15 June 2016 09:30 (15 minutes)

Construction of an Ultra-Cold Neutron (UCN) facility is nearing completion in the TRIUMF Meson Hall. The new 500 MeV proton beamline (BL1U) and neutron spallation target, which feeds the superthermal UCN source, will be completed and transition over to the commissioning phase in Spring 2016. As well, the front end of the UCN source will be installed and also undergoing commissioning tests. Installation of the full UCN source is scheduled for completion during the second half of 2016, with UCN production expected in late 2016. A first experiment searching for the neutron electric dipole moment (nEDM) is currently being planned. The design and construction highlights, as well future plans for the UCN facility, will be presented.

Primary author: LEE, Larry (TRIUMF) Presenter: LEE, Larry (TRIUMF) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 172 2016 CAP Congr … / Report of Contributions Incompatibility of Determinism, In …

Contribution ID: 1154 Type: Poster (Non-Student) / affiche (non-étudiant)

Incompatibility of Determinism, Independence, and Objectivity Tuesday, 14 June 2016 19:10 (2 minutes)

Quantum mechanics is often described as “weird” and “strange” because it abandons manyofthe intuitive traits of classical physics. Specifically, the notion that the world is objective, is deterministic, and exists independent of measurement are basic features of classical theory, but do not always hold up in quantum theory. I point out that these intuitive ideas are actually not genuine features of classical physics. Instead, these three apparently reasonable classical assumptions — objectivity, determinism, and independence—are mutually incompatible with any theory, not only with quantum mechanics. While any two of these three assumptions are compatible, all three are not. Hence our seemingly reasonable classical assumptions may not be so reasonable after all.

Primary author: MANN, Robert (University of Waterloo) Co-authors: Prof. TERNO, Daniel (MacQuarie University); Prof. IONICIOIU, Radu (Department of Theoretical Physics, National Institute of Physics and Nuclear Engineering, 077125 Bucharest–Magurele, Romania)

Presenter: MANN, Robert (University of Waterloo) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 173 2016 CAP Congr … / Report of Contributions Relativistic Geoids

Contribution ID: 1155 Type: Oral (Non-Student) / orale (non-étudiant)

Relativistic Geoids Tuesday, 14 June 2016 14:00 (15 minutes)

In non-relativistic physics a geoid is a surface of constant gravitational potential. Here I propose, in the context of general relativity, the notion of a geoid – a surface of constant “gravitational potential”. This idea emerges as a specific choice of a previously proposed, more general andoper- ationally useful construction called a quasilocal frame – that is, a choice of a two-parameter family of timelike worldlines comprising the worldtube boundary of the history of a finite spatial volume. I describe the geometric properties of these geoid quasilocal frames, and construct solutions for them in some simple spacetimes. These results are then compared to their counterparts in Newto- nian gravity and compute general relativistic corrections to some measurable geometric quantities. This work may have applications in applied geodesy.

Primary author: MANN, Robert (University of Waterloo) Co-authors: Mr OLTEAN, Marius (Laboratoire de Physique et Chimie de l’Environnement et de l’Espace Centre National de la Recherche Scientifique, Universite d’Orleans France); Dr MCGRATH, Paul; Dr EPP, Richard (University of Waterloo) Presenter: MANN, Robert (University of Waterloo) Session Classification: T2-7 Gravity, Astrophysics and Cosmology (DTP) / Gravité, astrophysique et cosmologie (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 174 2016 CAP Congr … / Report of Contributions Super-Entropic Black Holes

Contribution ID: 1156 Type: Poster (Non-Student) / affiche (non-étudiant)

Super-Entropic Black Holes Tuesday, 14 June 2016 19:06 (2 minutes)

Black Hole Chemistry is a new perspective on black hole thermodynamics, one that indicates that once vacuum energy is taken into account, black holes behave more like chemical systems. As a consequence mass becomes chemical enthalpy, the notion of a thermodynamic volume appears, and black holes exhibit a broad range of chemical phenomena, including liquid/gas phase transitions similar to a Van der Waals fluid, triple points similar to that of water, and re-entrant phase transitions that appear in gels. One conjecture to follow from this program is that the entropy of an AdS black hole is bounded above by a function of its thermodynamic volume via a relation known as the Reverse Isoperimetric Inequality. Here I construct a new new class of rotating AdS black holes that provide counterexamples to this conjecture. They are formed by taking a new ultraspinning limit to the Kerr-AdS class of black holes, yielding objects whose event horizons are non-compact but have finite area. The structure of the spacetime is qualitatively changed since it isnolonger possible to return to a frame that does not rotate at infinity. I shall present both the construction of these “super-entropic” black holes and their implications for black hole thermodynamics.

Primary author: MANN, Robert (University of Waterloo) Co-authors: KUBIZNAK, David (Perimeter Institute); HENNIGAR, Robie Presenter: MANN, Robert (University of Waterloo) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 175 2016 CAP Congr … / Report of Contributions Spectroscopic measurements of m …

Contribution ID: 1157 Type: Oral (Non-Student) / orale (non-étudiant)

Spectroscopic measurements of marine atmospheric boundary layer composition in Halifax Wednesday, 15 June 2016 09:15 (15 minutes)

As part of a new research program dedicated to understanding atmospheric composition, we have initiated measurements of marine boundary layer trace gases using the technique of Open- Path Fourier Transform Infrared Spectroscopy (OP-FTIR) deployed in monostatic mode (collocated source and detector) in 2015. The recently acquired system significantly expands the measurement capability of atmospheric trace gases in Halifax and in Atlantic Canada. To date, we have conducted field campaigns in traffic conditions, as well as coastal forest and indoor environments. Trace gas concentrations are derived from atmospheric absorption spectra recorded over one-way atmospheric open paths ranging from 100-400 m. The retrieval process is being optimized to target greenhouse gases (CO2, CH4, N2O), ozone and its precursors (CO, NOx and many VOCs), trace gases implicated in particle formation (SO2, HNO3, NH3), and other IR-active species permanently imprinted in stored absorption spectra. Details of retrievals and detection limits under variable atmospheric conditions (primarily driven by absolute water vapour amounts) will be presented, along with first results from field measurements to date. Progress on long-term plans forincor- porating the active-source OP-FTIR system into a diurnal/nocturnal observatory at Saint Mary’s University will be discussed. Finally, as the system is planned to remain mobile, planned direct measurements of marine shipping sector emissions in Halifax Harbour will be presented.

Primary author: Prof. WIACEK, Aldona (Saint Mary’s University) Co-authors: Mr CHEN, Bryan (Saint Mary’s University); Ms PURCELL, Julia (Saint Mary’s Univer- sity); Mr TOBIN, Keane (Saint Mary’s University); Dr LI, Li (Saint Mary’s University) Presenter: Prof. WIACEK, Aldona (Saint Mary’s University) Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 176 2016 CAP Congr … / Report of Contributions Electrophoresis of a charged poly …

Contribution ID: 1158 Type: Oral (Non-Student) / orale (non-étudiant)

Electrophoresis of a charged polymer attached to an uncharged object: does the nature of the object matter? Thursday, 16 June 2016 13:45 (15 minutes)

Electrophoresis is the motion of charged objects in a fluid in an electric field. Electrophoretic separation of DNA molecules by length is important in many biomedical applications. It is normally done in a nanoporous medium, such as a gel, since uniformly charged polymers move at the same speed, regardless of their length. This is because such polymers are electrophoretically free-draining, meaning that their parts move in the fluid independently (essentially in “free fall”), with negligible hydrodynamic interactions (HI) between them. Separation by length without a gel becomes possible, if identical neutral objects are attached to the DNA molecules, thus breaking the uniformity. If one still naively assumes free-draining for such composite objects, neglecting HI, then the DNA length dependence of the electrophoretic mobility is predicted to have a universal form, independent of the nature of the object (a linear or branched polymer, a globular protein, a micelle, etc.) and the way it is attached to the DNA, with a single parameter depending onlyon the hydrodynamic friction coefficient of the object. Taking HI into account in the pre-averaging approximation, we show that, in fact, the form of the length dependence of the electrophoretic mobility depends strongly on the nature of the neutral object and the place of attachment, with, for example, power laws with different exponents observed for short DNA in different casesand a much stronger, exponential dependence when the DNA is attached inside a cavity in a solid object. The mobility can differ by several orders of magnitude for different objects with thesame friction coefficient, or even between different attachment points for the same object. Electrostatic analogies help explain some of these cases qualitatively. For a heteropolymer, the electrophoretic mobility is a weighted average of the mobilities of its parts; when an object is attached, the way the weights are modified can be described by an “influence function” that, in many cases,has interesting properties.

Primary authors: Prof. SLATER, Gary W. (Department of Physics, University of Ottawa); Dr CHUBYNSKY, Mykyta V. (Department of Physics, University of Ottawa)

Presenter: Dr CHUBYNSKY, Mykyta V. (Department of Physics, University of Ottawa) Session Classification: R2-1 Computational Condensed Matter (DCMMP) / Matière conden- sée numérique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 177 2016 CAP Congr … / Report of Contributions Search for supersymmetry in final …

Contribution ID: 1159 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Search for supersymmetry in final state with jets and two same-sign leptons or three leptons with the ATLAS detector. Monday, 13 June 2016 14:00 (15 minutes)

Supersymmetry (SUSY) is one of the most popular and the most studied theory proposed as an extension to the Standard Model (SM). If R-parity is conserved the lightest supersymmetric particle (LSP) is stable and in many models LSP can be a good candidate for dark matter. I will present the method and the results about the search of strongly produced supersymmetric particles using a specific signature involving final states with multiple hadronic jets and either two isolated leptons (e ou µ) with the same electric charge or at least three isolated leptons. This signature is present in many SUSY scenarios and Standard Model processes leading to such final states√ have a very small cross-section. The analysis uses a data sample of proton-proton collisions at s = 13 recorded with the ATLAS detector at the Large Hadron Collider (LHC) in 2015 corresponding to a total integrated luminosity of 3.2 fb−1. During the talk, I will cover different aspects of the analysis such as the detector, the dataset and simulated event samples, the event selection, the background estimation (and validation) and finally the results, interpreted in several simplified SUSY models.

Primary author: TREPANIER, Hubert (Universite de Montreal (CA)) Presenter: TREPANIER, Hubert (Universite de Montreal (CA)) Session Classification: M2-5 Energy Frontier: SUSY and Exotics (PPD) / Frontière d’énergie: supersymétrie et particules exotiques (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 178 2016 CAP Congr … / Report of Contributions In-situ investigation of charge tran …

Contribution ID: 1160 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

In-situ investigation of charge transport/recombination dynamics in organic semiconductors over wide time range at microscopic scale Wednesday, 15 June 2016 09:30 (15 minutes)

Organic semiconductors have garnered a lot of interest in the recent years owing to their easy processibility, tunability to required optical and electrical properties, and of course to their cost- effectiveness. Their use in the organic light-emitting diodes and photovoltaics is already quite promising. However, the charge mobility in these materials is strongly affected by their structural disorder and the energetic disorder introduced by the defects that act as traps to the charge carriers. Depending upon their physical location, be it interfacial or the bulk of the material; and distribution of energetically favoured level, these traps significantly affect the carrier current flow. In this work, the dynamics of injected/photogenerated charge carriers’ recombination and transportation are studied over wide range of time scales. The charged carrier current relaxation dynamics, post pulsed electrical/optical excitation, is studied using time-resolved fluorecence(TRF) in the time range of few tens of picoseconds to few microseconds, while higher time-range dynamics of upto many milliseconds is investigated using the technique called Charge extraction by linearly increasing voltage(CELIV). Polythiophene based polymer P3HT, and the same blend-doped with Phenyl-C61 -Butyric acid Methyl ester(PCBM) molecules and Zinc Oxide nanoparticles are studied at microscopic scale under optical microscopy.

Primary authors: Prof. NUNZI, Jean-Michel (Department of Physics, Engineering Physics & As- tronomy,Queen’s Univesity, ON, Canada); Mr BOBBARA, Sanyasi Rao (Department of Physics, Engi- neering Physics & Astronomy, Queen’s University, ON, Canada)

Presenter: Mr BOBBARA, Sanyasi Rao (Department of Physics, Engineering Physics & Astronomy, Queen’s University, ON, Canada) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 179 2016 CAP Congr … / Report of Contributions A Study of Optical Calibration for …

Contribution ID: 1161 Type: Oral (Non-Student) / orale (non-étudiant)

A Study of Optical Calibration for the DEAP-3600 Dark Matter Search Thursday, 16 June 2016 08:45 (15 minutes)

Rashid Mehdiyev, for the DEAP Collaboration, Carleton University, Department of Physics

DEAP-3600 is a direct dark matter search experiment at SNOLAB. The optical system forDEAP- 3600 consists of 255 high quantum efficiency photomultipier tubes (PMTs), which detect and monitor the scintillation light produced by particle interactions in the liquid argon target of the detector. The PMT response is calibrated with two kinds of optical calibration sources: an LED-fed fiberar- ray located at the positions of 20 PMTs, and a central laser source. This talk will discuss the optical calibration of the PMTs, present a method to determine relative PMT efficiency values in-situ using the optical calibration sources, and discuss PMT calibration results from commissioning data.

Primary author: Dr MEHDIYEV, Rashid (Carleton Unversity, Department of Physics) Presenter: Dr MEHDIYEV, Rashid (Carleton Unversity, Department of Physics) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 180 2016 CAP Congr … / Report of Contributions A Study of Alpha Particle Backgro …

Contribution ID: 1163 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

A Study of Alpha Particle Backgrounds in the Neck of the DEAP-3600 Detector Wednesday, 15 June 2016 14:15 (15 minutes)

The DEAP-3600 experiment searches for spin-independent interactions of weakly interacting massive particle (WIMP) dark matter candidates. The detector utilizes a 3600 kg mass of liquid argon as the dark matter target, which is contained in a spherical acrylic vessel. There is anopeningat the top of the acrylic vessel where the cooling system is located, in the ‘neck’ of the detector. The decay of alpha particles from components in this region can potentially mimic a WIMP signal, and so it is critically important to understand and mitigate this source of alpha backgrounds. Monte Carlo simulation is used to estimate the rate of such neck background events, employing material radioactivities that were carefully measured and constrained in the construction of DEAP-3600. A likelihood ratio method has been developed to identify and remove alpha particle backgrounds originating in the neck region. This talk will present the results of the Monte Carlo simulation and a preliminary analysis of neck alphas from data taken during DEAP-3600 commissioning with gaseous argon.

Primary author: MIELNICHUK, Courtney (for the DEAP Collaboration, University of Alberta, Department of Physics)

Presenter: MIELNICHUK, Courtney (for the DEAP Collaboration, University of Alberta, Department of Physics) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 181 2016 CAP Congr … / Report of Contributions Installation of EMMA, a Recoil Ma …

Contribution ID: 1164 Type: Poster (Non-Student) / affiche (non-étudiant)

Installation of EMMA, a Recoil Mass Spectrometer for TRIUMF’s ISAC-II Facility Tuesday, 14 June 2016 19:00 (2 minutes)

EMMA is a recoil mass spectrometer designed to separate the recoils of nuclear reactions from the beams that produce them. It is being installed in the ISAC-II experimental hall of TRIUMF, where it will be used with heavy radioactive ion beams accelerated to energies close to the Coulomb barrier on a variety of targets. An update on its installation will be given.

Primary author: DAVIDS, Barry (TRIUMF) Presenter: DAVIDS, Barry (TRIUMF) Session Classification: DNP Poster Session with beer / Session d’affiches, avec bière DPN

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 182 2016 CAP Congr … / Report of Contributions The motion of spherical particles i…

Contribution ID: 1165 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The motion of spherical particles in a simple ratcheting system with AC Fields Tuesday, 14 June 2016 14:00 (15 minutes)

Hanyang Wang, Gary W. Slater University of Ottawa

Ratcheting systems make it possible to control the motion of particles in such a way that it becomes possible to separate mixtures of particles on the basis of various physical properties (such as charge, size, shape, etc.). The ratcheting system that we study is a standard microfluidic channel with symmetry breaking obstacles placed periodically. Zero-mean alternating electric fields are found to lead to a net ratcheting motion of the particles, whether the field is applied along the channel’s axis or perpendicular to it. The resulting particle velocities depend on the particle’s size and charge, thus permitting separation. We show that it is possible to make particles movein opposite directions even though their charge is of the same sign. We then explore the possibility of using rotating electric fields, with and without channel walls. In the absence of walls, i.e.with a two-dimensional distribution of obstacles, we show that it is possible to make different particles move along different directions in the plane.

Primary author: WANG, Hanyang (University of Ottawa) Presenter: WANG, Hanyang (University of Ottawa) Session Classification: T2-6 Condensed Matter Theory (DTP-DCMMP) / Théorie dela matière condensée (DPT-DPMCM)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 183 2016 CAP Congr … / Report of Contributions Improved limit on the charge of an …

Contribution ID: 1166 Type: Oral (Non-Student) / orale (non-étudiant)

Improved limit on the charge of antihydrogen Thursday, 16 June 2016 13:30 (15 minutes)

Cold atoms of antihydrogen present a unique opportunity to study the properties of atomic antimatter, and via comparisons with its well-studied matter counterpart, the possibility to testfunda- mental symmetries such as CPT invariance. In order to probe matter-antimatter symmetry at the highest possible precision, it is essential that the anti-atoms be suspended in vacuum to allow for detailed interrogation via laser light or microwaves. The ALPHA experiment, performed at the CERN AD, has trapped upward of 1000 antihydrogen atoms since 2010. This presentation will describe the physics measurement that we have performed with some of these atoms to study their charge neutrality. By applying stochastic acceleration to trapped antihydrogen atoms, we determine an experimental bound on the antihydrogen charge, Qe, of |Q| < 0.71 parts per billion (one standard deviation), in which e is the elementary charge. This bound is a factor of 20 lower than was determined from the best previous measurement. I will also offer an outlook towards the spectroscopic studies being attempted using the new ALPHA2trap that we have commissioned.

For the ALPHA collaboration http://alpha-new.web.cern.ch: M. Ahmadi, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. Carruth, C.L. Cesar, M. Charlton, A.E. Charman, S. Eriksson, A.L. Evans, L.T. Evans, N. Evetts, J. Fajans, T. Friesen, M.C. Fujiwara, D.R. Gill, A. Gutierrez, J.S. Hangst, W.N.Hardy, M.E. Hayden„ C.A. Isaac, A. Ishita, S.A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen,M. Mathers, J.T.K. McKenna, S. Menary, J.M. Michan, T. Momose, J.J. Munich, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R.L. Sacramento, M. Sameed, E. Sarid, D.M. Silveira, C. So, T. D. Tharp. J. Thompson, R.I. Thompson, D.P. van der Werf, J.S. Wurtele, A. I. Zhmoginov.

Primary author: OLIN, Art (TRIUMF (CA)) Presenter: OLIN, Art (TRIUMF (CA)) Session Classification: R2-3 Testing Fundamental Symmetries II (PPD-DNP-DTP) / Tests de symétries fondamentales II (PPD-DPN-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 184 2016 CAP Congr … / Report of Contributions Calculation and Analysis of High R …

Contribution ID: 1167 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Calculation and Analysis of High Rate Total Electron Content in the Canadian High Arctic Monday, 13 June 2016 14:00 (15 minutes)

The Canadian High Arctic Ionospheric Network (CHAIN) [1] includes Global Positioning System (GPS) receivers capable of sampling specific observables at very high rates, up to 100 Hz.With these high rate observables, 100 Hz Total Electron Content (TEC), and Rate of TEC index (ROTI), can be calculated. This study outlines the methods and limitations of calculating both relative and absolute 100 Hz TEC, specifically from the observables provided by the Septentrio PolaRxS Pro GPS. Spectral analyses of the high rate TEC and ROTI is also presented, determining whether important results can be obtained within the higher frequency data. The expected hardware noise is predicted to aid in the determination of important results in the data, in an attempt to extract ionospheric information from possible sources of noise.

[1] Jayachandran, P. T., R. B. Langley, J. W. MacDougall, S. C. Mushini, D. Pokhotelov, A. M. Hamza, I. R. Mann, D. K. Milling, Z. C. Kale, R. Chadwick, T. Kelly, D. W. Danskin, and C. S. Carrano (2009), The Canadian high arctic ionospheric network (CHAIN), Radio Sci., 44, RS0A03, doi:10.1029/2008RS004046, 2009.

Primary author: MCCAFFREY, Anthony (University of New Brunswick) Co-author: THAYYIL, Jayachandran (University of New Brunswick) Presenter: MCCAFFREY, Anthony (University of New Brunswick) Session Classification: M2-6 Theory, Modelling, and Forecasting II (DASP) / Théorie, mod- élisation et prévisions II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 185 2016 CAP Congr … / Report of Contributions Commissioning the SNO+ Detector

Contribution ID: 1168 Type: Oral (Non-Student) / orale (non-étudiant)

Commissioning the SNO+ Detector Tuesday, 14 June 2016 09:15 (15 minutes)

SNO+ is a multipurpose neutrino experiment at SNOLAB. Our main physics goal is searching for neutrinoless double beta decay in Tellurium-130. Much work had been done to transform a heavy water detector into a scintillator detector. We are currently commissioning the experiment with water and I will show some early data.

Primary author: CADEN, Erica (Laurentian University) Presenter: CADEN, Erica (Laurentian University) Session Classification: T1-5 Neutrinoless Double Beta Decay II (PPD-DNP-DTP) / Double désintégration beta sans neutrino II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 186 2016 CAP Congr … / Report of Contributions Assembly of Gold Nanoparticles in …

Contribution ID: 1169 Type: Invited Speaker / Conférencier invité

Assembly of Gold Nanoparticles in Blue Phase Liquid Crystals: Towards New Generation of Soft Nanocrystals Monday, 13 June 2016 11:00 (30 minutes)

The use of nanoparticles in the field of nanotechnology is one of the most promising approaches for novel technological applications through the development of reconfigurable ordered structures with rich properties. As well, the coupling of nanoparticles within liquid crystals is an emerging topic in the field of soft matter that offers new possibilities for designing reconfigurable nanomaterials that respond to a wide range of external stimuli. In this work, we report the spontaneous formation of thermally reversible, cubic crystal nanoparticle assemblies in Blue Phases. Gold nanoparticles, functionalized to be highly miscible in cyanobiphenyl-based liquid crystals, were dispersed in Blue Phase mixtures and characterized by polarized optical microscopy and synchrotron small-angle X-ray scattering (SAXS). The nanoparticles assemble by selectively migrating to periodic strong trapping sites in the Blue Phase disclination lines. At the Blue Phase I to Blue Phase II phase transition, the nanoparticle lattice reversibly switches between two different cubic structures. The simultaneous presence of two different symmetries in a single material presents an interesting opportunity to develop novel dynamic optical materials. Recent progress in understanding the mechanism of nanoparticle self-organization is presented.

Primary author: GHARBI, Mohamed Amine (McGill University) Presenter: GHARBI, Mohamed Amine (McGill University) Session Classification: M1-5 Soft Matter and Polymers (DCMMP-DPMB) / Matière molle et polymères (DPMCM-DPMB)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 187 2016 CAP Congr … / Report of Contributions Muon Tomography applications to …

Contribution ID: 1170 Type: Poster (Non-Student) / affiche (non-étudiant)

Muon Tomography applications to nuclear non-proliferation and waste management Tuesday, 14 June 2016 19:02 (2 minutes)

Muon Scattering Tomography (MST) exploits the naturally occurring flux of high energy cosmic ray muons at the surface of the Earth to non-destructively assay the distributions of dense materials in a region of interest. The Cosmic Ray Inspection and Passive Tomography (CRIPT) detector was designed and built for this application. CRIPT is a unique MST apparatus using extruded plastic scintillating strips coupled with wavelength shifting fiber optics to reconstruct muon tracks. This information is used to extrapolate spatial points where muons have scattered off high density/high- Z materials therefore allowing for the reconstruction of 2D and 3D images. This is of particular relevance in the fields of nuclear non-proliferation, spent fuel verification, and reactor imaging. The former two fields are being explored in detail by research activities underway atCanadian Nuclear Laboratories’ Chalk River site. Using the CRIPT detector, fresh PHWR fuel, shielding materials, and storage containers have been successfully imaged. The characterization of these materials and geometries serves as a demonstration of the applicability of MST to current issues in nuclear materials management and nuclear non-proliferation.

Primary author: ERLANDSON, Andrew (Canadian Nuclear Laboratories) Co-authors: Dr JEWETT, Cybele (Canadian Nuclear Laboratories); Mr THOMPSON, Martin (Cana- dian Nuclear Laboratories); Dr KAMAEV, Oleg (Canadian Nuclear Laboratories); Dr LIVINGSTONE, Steve (Canadian Nuclear Laboratories); Dr ANGHEL, Vinicius (Canadian Nuclear Laboratories) Presenter: Dr KAMAEV, Oleg (Canadian Nuclear Laboratories) Session Classification: DIAP Poster Session with beer / Session d’affiches, avec bière DPIA

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 188 2016 CAP Congr … / Report of Contributions Exploring the exotic landscape wit …

Contribution ID: 1171 Type: Invited Speaker / Conférencier invité

Exploring the exotic landscape with direct reactions Tuesday, 14 June 2016 13:15 (30 minutes)

Nuclei far from stability offer us the scope of exploring new features that surface prominently at large isospin and weak binding. This led to the discovery of the nuclear halo bringing a newerain nuclear science breaking the boundaries of conventional concepts. The halo properties elucidate new features that till date remain a challenge to decipher from fundamental principles. Defining the nuclear force from the foundations built on quantum chromodynamics remains one of the major tasks in nuclear physics. The nuclear force is manifested in the characteristics of the nuclei and hence new efforts are underway to couple experiments of the exotic nuclei to ab initio theories. Nuclear reactions are highly sensitive and definitive probes to unravel the unknown new features of the exotic nuclei and hence the nuclear interaction.

In this presentation we will introduce a new reaction spectroscopy facility, IRIS, using a novel thin windowless solid hydrogen target. Recent experiments from the facility will be discussed to show observation of halo related excitation modes in the neutron halo nucleus, 11Li. To define the wavefunction of this Borromean halo nucleus, first exploration of its configuration with the unbound 10Li sub-component will be presented. New observations at the proton-drip line exploring the nuclear force will also be discussed.

Primary author: Prof. KANUNGO, Rituparna (Saint Mary’s University) Presenter: Prof. KANUNGO, Rituparna (Saint Mary’s University) Session Classification: T2-1 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 189 2016 CAP Congr … / Report of Contributions Dynamic measurements at THz fr …

Contribution ID: 1172 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Dynamic measurements at THz frequencies with a fast rotary optical delay line Wednesday, 15 June 2016 14:00 (15 minutes)

For several years, THz spectroscopy and imaging have been applied to many different fields. How- ever, some burdens still remain in its commercial generalization, particularly for the industry sector. One of these difficulties lies in the acquisition time. In a typical THz time-domain spectroscopy system (THz-TDS), the THz pulse is sampled in time by the means of a micrometer linear delay line. This operation is highly time-consuming, often on the minute scale. We design and fabricate a fast rotary optical delay line (FRODL) consisting of two curvilinear reflectors directly connected to a rotating motor. The optical delay is linear with the rotation angle of the FRODL. Theoptical input and output are separate and stable to avoid the use of other moving components. We present an experimental implementation of such FRODL. The FRODL surface is made with a CNC machine. We fabricated four blades on the same disk to increase by four the total scan rate. We tested the FRLODL with speeds up to 48 Hz (192 Hz maximum). The motor and the electronics were limiting this speed. The total delay was experimentally evaluated to 100 ps. As a first application, we present contactless monitoring of spray painting process and thickness real-time evaluation of the thickness of the paint layer. As a second application, we present the simultaneous detection and thickness characterization of fast moving objects.

Primary author: GUERBOUKHA, Hichem (Ecole Polytechnique de Montreal) Co-authors: Dr MARKOV, Andrey (École Polytechnique de Montréal); Dr QU, Hang (École Poly- technique de Montréal); Prof. SKOROBOGATIY, Maksim (École Polytechnique de Montréal) Presenter: GUERBOUKHA, Hichem (Ecole Polytechnique de Montreal) Session Classification: W2-7 Terahertz Science and Applications (DAMOPC) / Sciences et applications des Terahertz (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 190 2016 CAP Congr … / Report of Contributions Silk Foam Terahertz Waveguides f …

Contribution ID: 1173 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Silk Foam Terahertz Waveguides for Biomedical and Agri-Food Applications Wednesday, 15 June 2016 13:45 (15 minutes)

Silk is a unique kind of nature protein. In recent years this ancient material has been introduced into biomedical field as a promising biomaterial which opened a new era in the development of optical interfaces and sensors for biomedical applications. In this work, we present biocompatible THz waveguides made from silk foam. To our knowledge, this is the first time when biocompatible waveguides are demonstrated in the mid-THz frequency range. Silk foams were obtained from a purified aqueous silk fibroin solution and lyophilised in a vertical freezer at -80 ℃ for several hours. Density measurements show a porosity (air fraction by volume) higher than 94%. Fiber silk foams are investigated with a THz Time-Domain Spectroscopy setup. We measure the THz transmission through different lengths of samples. We extract both the refractive index and the extinction coefficient in the THz virtually constant with a value of 1.0654, close to that of air. The losses follow a square law (0.3 cm^-1 at 0.3 THz). Because of its high porosity, the absorption losses are reduces by one order of magnitude compared to solid silk. Its main advantage compared to other waveguides is that it is biocompatible, biodegradable and it could be biofunctionalized. Moreover the foam porous structure can be useful for sampling of biofluids using capillary effect for applications in biosensing. This cannot be done with usual THz polymer waveguides.

Primary author: GUERBOUKHA, Hichem (École Polytechnique de Montréal) Co-authors: Dr YAN, Guofeng (Zhejiang University); Prof. SKOROBOGATIY, Maksim (École Poly- technique de Montréal); Dr SKOROBOGATA, Olga (McGill University) Presenter: GUERBOUKHA, Hichem (École Polytechnique de Montréal) Session Classification: W2-7 Terahertz Science and Applications (DAMOPC) / Sciences et applications des Terahertz (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 191 2016 CAP Congr … / Report of Contributions Contactless Real-time Dynamic M …

Contribution ID: 1174 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Contactless Real-time Dynamic Measurements with THz waves and a Rotary Delay Line Tuesday, 14 June 2016 09:00 (15 minutes)

For several years, THz spectroscopy and imaging have been applied to many different fields. How- ever, some burdens still remain in its commercial generalization, particularly for the industry sector. One of these difficulties lies in the acquisition time. In a typical THz time-domain spectroscopy system (THz-TDS), the THz pulse is sampled in time by the means of a micrometer linear delay line. This operation is highly time-consuming, often on the minute scale. We design and fabricate a fast rotary optical delay line (FRODL) consisting of two curvilinear reflectors directly connected to a rotating motor. The optical delay is linear with the rotation angle of the FRODL. Theoptical input and output are separate and stable to avoid the use of other moving components. We present an experimental implementation of such FRODL. The FRODL surface is made with a CNC machine. We fabricated four blades on the same disk to increase by four the total scan rate. We tested the FRLODL with speeds up to 48 Hz (192 Hz maximum). The total delay was experimentally evaluated to 100 ps. As a first application, we present contactless monitoring of spray painting process and thickness real-time evaluation of the thickness of the paint layer. As a second application, we present the simultaneous detection and thickness characterization of fast moving objects.

Primary author: GUERBOUKHA, Hichem (École Polytechnique de Montréal) Co-authors: Dr MARKOV, Andrey (École Polytechnique de Montréal); Dr QU, Hang (École Poly- technique de Montréal); Prof. SKOROBOGATIY, Maksim (École Polytechnique de Montréal) Presenter: GUERBOUKHA, Hichem (École Polytechnique de Montréal) Session Classification: T1-7 Mass spectrometry in nuclear waste management and control at the border (DIAP-DIMP) / Spectrométrie de masse dans la gestion des déchets nucléaires et surveillance à la frontière (DPIA-DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 192 2016 CAP Congr … / Report of Contributions Fingerprints of the axion in the ph …

Contribution ID: 1175 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Fingerprints of the axion in the phonon properties of topological semimetals Wednesday, 15 June 2016 16:00 (15 minutes)

Weyl semimetals are three dimensional crystals that contain topologically protected Dirac fermions in the electronic band structure. These materials display an array of unusual transport and optical properties, which can betraced to the emergence of an axion term in Maxwell’s equations. Predicted four decades ago in the context of high energy physics, the axion has remained experimentally elusive until its recent discovery in topological materials. Following this discovery, the impact of the axion in the electronic properties has been extensively studied. However, little is known about the interplay between the axion and the lattice vibrations. In this talk, I will present a theory which describes the coupling between the axion and the polar optical phonons in Weyl semimetals. I will thereafter show how this coupling modifies the dynamical properties of the lattice andthe electron-phonon interactions.

Primary authors: GARATE, Ion (U); RINKEL, pierre (Université de Sherbrooke) Presenter: RINKEL, pierre (Université de Sherbrooke) Session Classification: W3-3 Quantum Transport (DCMMP) / Transport quantique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 193 2016 CAP Congr … / Report of Contributions Long-term behaviour of granular c …

Contribution ID: 1176 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Long-term behaviour of granular chains held between walls is really equilibrium. Tuesday, 14 June 2016 14:15 (15 minutes)

Granular chains have been the focus of a number of studies, in part due to their numerous applications, ranging from shock absorption and vibration reduction to energy localization. Force impulses to an unloaded granular chain result in a propagating solitary wave (SW), analogous to a soliton of the Korteweg-de Vries equation. When SWs collide with a boundary or another SW, secondary solitary waves (SSWs) are produced as grains break contact. A consequence of this process is the transition from a non-ergodic, SW dominant, phase to the stable “quasi-equilibrium” (QEQ) phase, thought to be distinct from true thermodynamic equilibrium due to the absence of equipar- titioning of energy. We show that, in the absence of energy dissipation, when granular systems are allowed to evolve to extremely long times, the number of SSWs becomes sufficiently large that the system actually approaches a true equilibrium phase. In this extreme-time limit, energy in fact becomes equipartitioned among all grains, and we illustrate how the specific heat and kinetic energy fluctuations can be predicted by the generalized equipartition theorem, regardless ofthe degree of the interaction potential. This opens up the possibility that granular systems should be treated by equilibrium statistical mechanics.

Primary author: PRZEDBORSKI, Michelle (Brock University) Co-authors: Prof. SEN, Surajit (State University of New York at Buffalo); Prof. HARROUN, Thad (Brock University)

Presenter: PRZEDBORSKI, Michelle (Brock University) Session Classification: T2-6 Condensed Matter Theory (DTP-DCMMP) / Théorie dela matière condensée (DPT-DPMCM)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 194 2016 CAP Congr … / Report of Contributions Backgrounds involved in dark mat …

Contribution ID: 1177 Type: Oral (Non-Student) / orale (non-étudiant)

Backgrounds involved in dark matter signal extraction for DEAP-3600 Thursday, 16 June 2016 08:30 (15 minutes)

Astrophysical lines of evidence point towards dark matter constituting 27\% of the energy density of the Universe and 85\% of all matter. DEAP-3600, located at SNOLAB in Sudbury Canada, is a single phase liquid argon direct detection dark matter experiment. The light produced by nuclear recoil within liquid argon has considerable light yield andischar- acteristic of the interaction type allowing for powerful pulse shape discrimination. The discovery potential is a combination of the radio purity of construction materials andthesuc- cess of active rejection and identification criteria. This talk will report on preliminary results of these background reduction efforts.

Primary author: Dr OUELLET, Christian (Carleton University) Presenter: Dr OUELLET, Christian (Carleton University) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 195 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Growth of Cu- …

Contribution ID: 1178 Type: Oral (Non-Student) / orale (non-étudiant)

**WITHDRAWN** Growth of Cu-Ni (90/10) films by DC magnetron sputtering Tuesday, 14 June 2016 16:45 (15 minutes)

It is a common fact about alloys that surface chemical composition varies from the bulk in terms of elemental ratio and chemical state of the elements which can affect their material performances. That’s why deposition of alloy films is very challenging. We prepared CuNi (90/10) alloythin films by D.C. magnetron sputtering on Si(111) substrates and studied the effect of deposition times and sputtering powers on their surface and bulk chemical compositions and microstructures. Ac- cording to XRD studies, all deposited films were composed of single phase CuNi (90/10) alloy and predominantly (111) textured. Crystallite sizes increased linearly with the increase in deposition times and sputtering powers. SEM studies revealed that sputtering powers have relatively stronger influence on the surface roughness and island formation as compared to the deposition times.Our XPS analysis showed slight Ni enrichment on the surface and presence of Ni2O3 along with NiO strongly which strongly suggested existence of a surface defect in all films. Furthermore, there was a clear evidence of presence of CuO along with Cu2O as Cu2p core level had a strong satellite peak. Neutron Reflectometry measurements, indicated that the film thickness increases linearly both with deposition times and sputtering times.

Primary author: Dr BUKHARI, Syed (Canadian Nuclear Laboratories) Co-authors: Dr FRITZSCHE, Helmut; Dr TUN, Zin (NRC) Presenter: Dr BUKHARI, Syed (Canadian Nuclear Laboratories) Session Classification: T3-8 Thin Films I (DSS-DCMMP) / Couches minces I (DSS-DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 196 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Neutron Reflec …

Contribution ID: 1179 Type: Oral (Non-Student) / orale (non-étudiant)

**WITHDRAWN** Neutron Reflectometry: A non-destructive probe for in-situ corrosion monitoring in Cu-Ni (90/10) alloy Tuesday, 14 June 2016 16:30 (15 minutes)

Neutron Reflectometry (NR) is an ideal technique to study chemical reactions at surfaces and interfaces because it is a non-destructive technique which can determine in-situ the chemical profile in a film with nanometre resolution. Therefore, NR can provide information on the metal andoxide layer thickness and the changing interfaces between metal and oxide layer as well as oxide layer and an aqueous environment, thereby investigating the corrosion process on the atomic scale. The Cu-Ni (90/10) alloy is an interesting material from its corrosion resistance property and is being used in many industries including marine and nuclear applications. The accelerated corrosion of this alloy in seawater under certain conditions has been attributed to the breaking and removal of the passive Cu2O/CuO layer. According to this picture, the density of the Cu2O/CuO passive layer, as well as the film thickness, should start changing at the onset of the corrosion process. Todate, this phenomenon has not been observed directly and in situ. In this study, we used NR to monitor the surface corrosion to get insight into the passive layer modification during the very early stages of corrosion. We prepared 60 nm thick Cu90Ni10 films on Si wafers using DC magnetron sputtering and exposed them to simulated seawater and to a similar seawater but contaminated with sulphur, and measured neutron reflectivity as a function of time. The first experiment (i.e. without sulphur) showed that the reaction at the surface starts after a few minutes and progresses slowly. In contrast, in sulphur polluted seawater (10 ppm S) the reaction was much faster.

Primary author: BUKHARI, Syed (Candian Nuclear Laboratories (CNL)) Co-authors: Dr FRITZSCHE, Helmut; Dr TUN, Zin (NRC) Presenter: BUKHARI, Syed (Candian Nuclear Laboratories (CNL)) Session Classification: T3-8 Thin Films I (DSS-DCMMP) / Couches minces I (DSS-DPMCM)

Track Classification: Surface Science / Science des surfaces (DSS)

September 29, 2021 Page 197 2016 CAP Congr … / Report of Contributions Cholesterol Expels Ibuprofen from …

Contribution ID: 1182 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Cholesterol Expels Ibuprofen from the Hydrophobic Lipid Membrane Core Tuesday, 14 June 2016 09:30 (15 minutes)

All drugs must cross the lipid membrane to enter the cell, either by passive or active transport. Dif- fusing drug molecules may interact with, or embed in, the bilayer and change membrane structure and function. We have observed a significant interaction between cholesterol and the common analgesic, ibuprofen, in model lipid membranes [1]. Using X-ray diffraction in highly oriented, multi-lamellar stacks of lipid membranes, we located the ibuprofen molecule within the bilayer and determined that the drug induces a lamellar to cubic phase transition at concentrations of more than 5 mol%. The phase transition is caused by the presence of ibuprofen in the hydrophobic membrane core, where it induces negative membrane curvature. Cholesterol is a stiff, hydrophobic sterol molecule which also embeds within the membrane core and stiffens lipid tails [2]. When ibuprofen is introduced into membranes prepared with20mol% cholesterol, the cubic phase transition is suppressed, as ibuprofen is not able to partition into the core of cholesterol-containing membranes. The results indicate that ibuprofen-membrane interactions strongly depend on membrane composition and properties. The work adds to the growing evidence that amphiphilic molecules, such as aspirin or ibuprofen, significantly disrupt membrane structure [3,4].

[1] RJ Alsop et al. Soft Matter (2015). 11(24) 4756-4767. [2] MA Barrett, S Zheng, LA Toppozini, RJ Alsop, et al. Soft Matter (2013). 9(39) 9342-9351. [3] RJ Alsop et al. Soft Matter (2014). 10(24) 4275-4286. [4] RJ Alsop et al. BBA-Biomembranes (2015). 1848. 805-812.

Primary authors: RHEINSTADTER, Maikel (McMaster University); ALSOP, Richard (McMaster University)

Presenter: ALSOP, Richard (McMaster University) Session Classification: T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 198 2016 CAP Congr … / Report of Contributions Maximizing electrophoretic mobili …

Contribution ID: 1183 Type: Oral (Non-Student) / orale (non-étudiant)

Maximizing electrophoretic mobility differences among polymorphic materials Monday, 13 June 2016 11:45 (15 minutes)

Physical separation of different polymorphs is a serious experimental challenge, but success would help efforts in applications as diverse as drug discovery, environmental remediation, and cultural conservation. To meet this challenge, we demonstrate a proof-of-principle method to separate polymorphic materials by tuning their electrophoretic mobility differences. Our test case involved two different phases of calcium carbonate (aragonite and calcite, both CaCO₃) in aqueous suspensions. Two serendipitous benefits arose when we used conventional additives in the suspension to prevent particle aggregation. First, phosphate-based additives increase the magnitude of the electrophoretic mobility differences between calcite and aragonite. This isad- vantageous because the greater the electrophoretic mobility difference, the less time and distance would be required for polymorph separation. Second, the phosphate additives prevent aragonite dissolution, even when the particles remain in aqueous suspension for many months. This is very fortuitous because it makes electrophoresis a non-destructive separation strategy for these calcium carbonate polymorphs.

Primary author: PODUSKA, Kristin (Memorial University of Newfoundland) Co-authors: Dr XU, Chuan (Memorial University of Newfoundland); Mr WALSH, Cole (Memo- rial University of Newfoundland); Dr BOARETTO, Elisabetta (Weizmann Institute of Science (Israel))

Presenter: PODUSKA, Kristin (Memorial University of Newfoundland) Session Classification: M1-2 Material Growth and Processing (DCMMP) / Croissance et traitement des matériaux (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 199 2016 CAP Congr … / Report of Contributions The Lipid Bilayer Provides a Site f…

Contribution ID: 1184 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The Lipid Bilayer Provides a Site for Cortisone Crystallization at High Cortisone Concentrations Monday, 13 June 2016 13:45 (15 minutes)

Cortisone is an injected anti-inflammatory drug that is used to treat inflammation. Cortisone’s mechanism of action involves binding to an intracellular receptor which transduces a biochemical cascade to reduce the production of inflammatory prostaglandins. However, cortisone is known to confer side effects, such as pain, known as a “steroid flare” for which the mechanism is unknown. Using X-ray diffraction of highly oriented, multi lamellar stacks of lipid membranes and molecular dynamics (MD) simulations, we locate the cortisone molecules within the bilayer, quantified its crystallization, and measured the respective insertion dynamics [1]. At low cortisone concentrations, the molecules localize near the glycerol group of the lipid, and decreased membrane width in a dose-dependent manner. The formation of the cortisone crystallites was observed at higher concentrations, which conferred to a cubic lattice. While the cortisone molecules align parallel to the bilayers at low concentrations, they start to penetrate the hydrophobic core at higher concentrations. Trans-membrane crystallites start to nucleate when the membrane thickness has decreased such that cortisone molecules in the different leaflets can find partners from the opposite leaflet. The results manifests to potentiate a mechanism ofaction for “steroid flares” by forming crystallites in the bilayer, and offers greater understanding ofthe drug’s action.

[1] RJ Alsop, A Khondker, JS Hub, MC Rheinstädter,. Sci. Rep. 6, 22425 (2016).

Primary author: KHONDKER, Adree (McMaster University) Co-authors: Dr HUB, Jochen (Georg-August-University Göttingen); RHEINSTADTER, Maikel (Mc- Master University); ALSOP, Richard (McMaster University) Presenter: KHONDKER, Adree (McMaster University) Session Classification: M2-2 Molecular Biophysics (DPMB) / Biophysique moléculaire (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 200 2016 CAP Congr … / Report of Contributions Rn-222 Assays for SNO+

Contribution ID: 1185 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Rn-222 Assays for SNO+ Monday, 13 June 2016 11:45 (15 minutes)

SNO+ is a large, underground neutrino detector, redesigned from the SNO detector. Three separate phases of SNO+ will provide a diverse study of neutrinos, with one phase specifically dedicated to the search for neutrinoless double beta decay in Te-130. At a depth of 2 km underground, SNO+ is shielded from many cosmogenics, yet the decay of U-238 within the surrounding rock leads to high (∼3.54 pCi/L) levels of Rn-222 in the air. Two cryotrapping units capable of collecting Rn-222 into Lucas cells are under development: one for the water shielding tank surrounding the cavity, the other for the scintillator fluid inside the detector. Once radon has been collected the Lucas cells are then taken to surface and counted, which will verify if the targets of 3.5E−13 g U/g water and ∼1E−17 g U /g scintillator are met. The status of both units and the Lucas cell counting system are discussed. The scintillator collector is under construction, the water unit is undergoing recommissioning, and the Lucas cell counting system will be updated.

Primary author: RUMLESKIE, Janet (Laurentian University) Presenter: RUMLESKIE, Janet (Laurentian University) Session Classification: M1-4 Neutrinoless Double Beta Decay I (PPD-DNP-DTP) / Double désintégration beta sans neutrino I (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 201 2016 CAP Congr … / Report of Contributions A Computational Analysis of the A …

Contribution ID: 1186 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

A Computational Analysis of the Application of Skewness and Kurtosis to Corrugated and Abraded Surfaces Tuesday, 14 June 2016 19:38 (2 minutes)

In this poster, we describe the results of our investigation into the relevance of skewness and kurtosis as measures of surface roughness. Two types of surfaces are computationally generated: abraded surfaces consisting of surface scratches, and corrugated surfaces, consisting of hemispher- ical features. It was found that abraded surfaces could be well described by the skewness and kurtosis, exhibiting a large variation in these parameters over the range of surfaces sampled. The RMS roughness, RMS slope, and surface area ratio did not change significantly by comparison. A monotonic relationship was also found to exist between the skewness and kurtosis for abraded surfaces. For corrugated surfaces, the skewness and kurtosis were nearly constant for surfaces with RMS roughness values differing by a factor of 5, while the RMS roughness, RMS slope, and surface area ratio changed significantly in comparison, indicating that these surfaces are best characterized by the latter three parameters. No monotonic relationship was found to exist between skewness and kurtosis for corrugated surfaces.

Primary author: Mr DOWNEY, Tyler (Memorial University of Newfoundland) Co-authors: Dr BEAULIEU, Luc (Memorial University of Newfoundland); Mr MARTIN, Peter (Memorial University of Newfoundland)

Presenter: Mr DOWNEY, Tyler (Memorial University of Newfoundland) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 202 2016 CAP Congr … / Report of Contributions A Scintillator Purification Plant an …

Contribution ID: 1187 Type: Oral (Non-Student) / orale (non-étudiant)

A Scintillator Purification Plant and Fluid Handling System for SNO+ Tuesday, 14 June 2016 09:00 (15 minutes)

A large capacity purification plant and fluid handling system has been constructed for theSNO+ neutrino and double-beta decay experiment, located 6800 feet underground at SNOLAB, Canada. SNO+ is a refurbishment of the original SNO detector to fill the acrylic vessel with liquid scintillator based on Linear Alkylbenzene (LAB) and 2 g/L PPO, and also has a phase to load natural tellurium into the scintillator for a double-beta decay experiment with Te-130. The plant includes processes multi-stage dual-stream distillation, column solvent-solvent extraction, steam stripping, and functionalized silica gel adsorption columns. The plant also includes systems for preparing the scintillator and metal-loading the scintillator for double-beta decay exposure. We review the basis of design, the purification principles, specifications for the plant, and the construction and installations. We also discuss the plant helium leak testing, the passivation and high-purity clean- ing, and the plant safety systems. Currently the plant is undergoing testing and commissioning with water, with approvals for LAB commissioning to begin early summer 2016.

Primary author: FORD, Richard (SNOLAB) Presenter: FORD, Richard (SNOLAB) Session Classification: T1-5 Neutrinoless Double Beta Decay II (PPD-DNP-DTP) / Double désintégration beta sans neutrino II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 203 2016 CAP Congr … / Report of Contributions Microstructure and hydrogen stor …

Contribution ID: 1188 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Microstructure and hydrogen storage properties of FeTi + x wt% Hf alloys (x = 0, 2, 4 and 8) Wednesday, 15 June 2016 13:45 (15 minutes)

In the perspective of widespread utilization of hydrogen, safe and low cost ways to store hydrogen are needed. Two common ways to store hydrogen are in the liquid and gaseous forms. However, both of these technique present serious drawbacks for many practical applications because they necessitate either a very low temperature (20 K) or a high pressure (700 bar). Another way to store hydrogen is to use metal hydrides. In metal hydride the hydrogen is chemically bonded to metal atoms. Metal hydrides are a safe and compact way to store hydrogen but, in order to be widely used by the industry, the cost should be reduced. A big part of the cost of FeTi is the first hydrogenation (activation) which has to be performed at high temperature and pressure. In order to reduce the activation time and conditions of operation, we investigated the addition of hafnium to FeTi. Alloys of compositions FeTi + x wt% Hf , with x=0, 2, 4 and 8 were synthesized using an induction furnace. The microstructure of the as-cast alloys were investigated by scanning electron microscopy and electron microprobe analysis. We found that the alloys are multiphase: one phase corresponding to the matrix FeTi, with about 1 at% of Hf irrespective of the amount of doping. Another phase is hafnium-rich of approximate composition Ti1.1Fe0.74Hf0.16. The effect of Hf doping on activation kinetics will be reported and possible mechanism discussed.

Primary author: RAZAFINDRAMANANA, VOLATIANA Co-authors: HUOT, Jacques (UQTR); Prof. BOBET, Jean-Louis (ICMCB, France) Presenter: RAZAFINDRAMANANA, VOLATIANA Session Classification: W2-5 Thin Films II (DCMMP-DSS) / Couches minces II (DPMCM- DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 204 2016 CAP Congr … / Report of Contributions Nighttime solar cells

Contribution ID: 1189 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Nighttime solar cells Wednesday, 15 June 2016 09:15 (15 minutes)

Energy demand from the electrical grid is substantially higher during evening times when solar panels cannot contribute to electrical power generation. The fact that solar cells only produce energy during daytime necessitates their costly integration with expensive storage components. At the present cost levels, even a solar panel operating at the theoretical maximum of 70% power conversion efficiency would not be competitive with fossil fuels due to the cost of batteries used to dispatch solar power at night. Here we introduce a new family of photovoltaics capable of generating power in the dark by exploiting the afterglow redox properties of strontium aluminate, a persistently luminescent (PL) material, in a way that, even after 9 hours operation in the dark, our photovoltaics still produce an afterglow short-circuit current that is 75% of the amount generated immediately after illumination. We demonstrate that our “nighttime” photogeneration system can be integrated into dye-sensitized solar cells, and, potentially, other types of photovoltaics for optimized power generation during daytime and nighttime. our work offers unique advances in the photo-physics of PL materials through the invention and operation of nighttime solar cells. Although 1-sun power conversion efficiency from our devices is apparently low (1%), overnight electrical power generation from afterglow currents make them uniquely competitive on theen- ergy market, because low efficiency under illumination is at least partially compensated bypower storage and release in the afterglow.

Primary author: LI, ye (uwo) Co-authors: Mr CHOI, Dong-Yup (UWO); Ms YEUNG, Edith (UWO); FANCHINI, Giovanni (The University of Western Ontario); BAULD, Reginald (University of Western Ontario) Presenter: LI, ye (uwo) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 205 2016 CAP Congr … / Report of Contributions Citation Networks in Law: Detecti …

Contribution ID: 1190 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Citation Networks in Law: Detection of Hierarchy and Identification of Key Events Monday, 13 June 2016 14:00 (15 minutes)

Citation networks can be used to make powerful analyses about human intellectual activity in diverse fields. However, universal rules governing their structure and dynamics have not yetbeen discovered. To address this, my research probes the influence of social and institutional hierarchy on the structure and dynamics of citation networks. Hierarchy is a fundamental feature of all human social organizations; therefore, any citation network is necessarily embedded in an “underlying” hierarchy that in turn determines properties of the network. Through this new way of analyzing citation networks, my research seeks to advance the understanding of phenomena central to societal progress, such as: the emergence of research fronts and seminal publications; how paradigms form, take hold, become unstable, and collapse; innovation and the emergence of new technologies; and the emergence of new legal doctrine and the evolution of the law. I will present an analysis of a novel data set (that I have created) that covers all hierarchical levels of the Canadian legal system for a specific area of law (defamation law). My presentation will show: 1) an evaluation of a recently published method for inferring hierarchies among scientific journals based on scientific citation networks by applying that method to my novel data set,in order to determine if the method is capable of detecting the known underlying court hierarchy; and 2) ways in which network analysis methods (node-ranking via authority scores and node- grouping via community detection/clustering) can identify important periods in the evolution of the law (e.g. turning-points in legal “eras”, in which the law is applied in a new way). Points 1 and 2 will be discussed in relation to the overarching goal of understanding the influence of underlying hierarchy on the structure and evolution of citation networks in law and other fields.

Primary author: Mr HICKEY, Joseph (University of Calgary) Co-author: Prof. DAVIDSEN, Jörn (University of Calgary) Presenter: Mr HICKEY, Joseph (University of Calgary) Session Classification: M2-4 Mathematical Physics (DTP) / Physique mathématique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 206 2016 CAP Congr … / Report of Contributions Characterization of the NEWS sph …

Contribution ID: 1191 Type: Oral (Non-Student) / orale (non-étudiant)

Characterization of the NEWS spherical gas detectors Thursday, 16 June 2016 09:30 (15 minutes)

The NEWS (New Experiments with Spheres) project employs novel spherical gas detectors thatare very sensitive to very low energy deposition. Each detector consists of a spherical gas volume with a small central electrode forming a radial electric field. At Queen’s University we are currently working with a few prototype detectors for their characterization under different working conditions such as gas, pressure, high voltage and sensor. We proved that sub-keV energy threshold with good energy resolution can be achieved and demonstrated that the detectors can be used to measure particle energy loss functions along their tracks in the gas. The testing of data acquisition system, electronics, gas handling system and studies of noise reduction are proven useful for designing the larger scale low-mass dark matter detector to be located underground at SNOLAB, the NEWS-SNO experiment.

Primary author: CAI, Bei (Queen’s University) Presenter: CAI, Bei (Queen’s University) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 207 2016 CAP Congr … / Report of Contributions Initial Results from the AUTUMN …

Contribution ID: 1192 Type: Oral (Non-Student) / orale (non-étudiant)

Initial Results from the AUTUMNX Magnetometer Array Tuesday, 14 June 2016 09:00 (15 minutes)

Most AUTUMNX sites were installed in late 2014, forming a meridian chain along the eastern shore of Hudson Bay. In early 2015, a second, more widely spaced, chain became operational at the longitude of Iqaluit/Kuujauq. These chains provide good coverage in longitude and latitude in eastern Canada, using highly accurate and reliable THEMIS class magnetometers from UCLA. Many substorms have been observed, along with activity characterized as convection bays or steady magnetospheric convection, which may dominate. Isolated impulsive events observed at many stations appear to be related to detectable signals in nearby power grid systems. The meridian chain is conjugate to GOES East and to Antartica, and some events have been observed to have conjugate signatures. The AUTUMNX array was funded by the GO Canada initiative of the Canadian Space Agency.

Primary author: CONNORS, Martin (Athabasca University) Presenter: CONNORS, Martin (Athabasca University) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 208 2016 CAP Congr … / Report of Contributions Functional nanostructured surface …

Contribution ID: 1193 Type: Invited Speaker / Conférencier invité

Functional nanostructured surfaces for biomedical applications Tuesday, 14 June 2016 08:30 (30 minutes)

Metals currently used for prosthetic reconstructions (e.g. titanium) enjoy a relatively good success rate, but their performance drops significantly in patients with compromised health status, and post-surgical infections still remain an important challenge. In addition, there are still no such metals that are able to respond to any deterioration of their relationship with the host tissue. To address these needs, different nanotechnology-based strategies have been exploited. Among these, the creation of nanoporous surfaces by simple yet efficient (electro)chemical treatments and the use of polymeric coatings, have emerged as a very effective approach to provide antibacterial properties, drug-delivery capacities and advantageous physicochemical cueing to cells. In this context, we investigated the effects of nanoporous surfaces generated by simple oxidative nanopatterning on the adherence of two common bacteria responsible of implant-associated infections and one yeast strain found in hospital settings. Nanoporous titanium surfaces are also very attractive for their capacity to act as metallic platforms for controlled drug release directly atthe implantation site. In this context, we have loaded treated surfaces with Vancomycin, a commonly used antibiotic, and studied the elution profile engendered by the 3-dimensional network of nano- sized pits. In order to adapt such technology towards the creation of ‘smart’ materials for in situ ‘gated’ release, we have employed a chitosan-poly(ethylene oxide) (PEG) hydrogel demonstrating a pH-dependent drug release. Such change has been associated with bone remodeling and infections as well as tissue inflammation. Nanoporous surfaces lend themselves to being an effective substrate to immobilize polymeric coatings because of their enhanced surface area and greater amount of binding sites. In this context, we employed a mussel-inspired polymer, poly(dopamine), and carried out extensive investigation of its biological in vitro effects to better understand its direct physicochemical cueing to adhering cells.

Primary author: VARIOLA, Fabio (University of Ottawa) Presenter: VARIOLA, Fabio (University of Ottawa) Session Classification: T1-6 Nanostructured and Functional Nanomaterials (DCMMP-DIAP) / Nanomatériaux nanostructurés et fonctionnels (DPMCM-DPIA)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 209 2016 CAP Congr … / Report of Contributions Red Blood Cell Ghosts for biomedi …

Contribution ID: 1194 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Red Blood Cell Ghosts for biomedical applications: Blood on a Chip Wednesday, 15 June 2016 10:15 (15 minutes)

The preparation of Red Blood Cell (RBC) Ghosts is a well-known protocol in biological andmedical research. It describes the extraction of the membranes from RBCs. Another well-known protocol is the preparation of highly ordered stacks of artificial lipid bilayers on silicon wafers. This technique is useful for analyzing the molecular structure and dynamical properties of these bilayers via X- Ray and neutron scattering experiments, and other biophysical techniques. Such experiments in particular allow the study of the interaction between cell membranes and drugs, small molecules, and bacteria. There are various attempts to adapt this protocol to a native cell membrane. For thefirsttime we were able to combine both described protocols and to prepare highly ordered stacks of RBC membranes on silicon wafers. These systems can now be used as inexpensive and safe platforms for testing the effect of drugs and bacteria on RBC membranes in-vitro using biophysical techniques, such as X-ray and neutron diffraction, optical spectroscopy and AFM.

We present the preparation and characterization of “Blood on a Chip” from molecular structure to the morphology of the membrane assemblies. Aspirin, which is commonly used in the “low-dose- aspirin therapy” was found to have a drastic effect on our human blood membranes and leads toa significant softening and fluidification of the membranes.

Primary author: HIMBERT, Sebastian (Mcmaster University) Co-authors: DHALIWAL, Alex (McMaster University); RHEINSTADTER, Maikel (McMaster Uni- versity); ALSOP, Richard (McMaster University) Presenter: HIMBERT, Sebastian (Mcmaster University) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 210 2016 CAP Congr … / Report of Contributions Coarse-grained simulations of hig …

Contribution ID: 1195 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Coarse-grained simulations of highly driven DNA translocation from a confining nanotube Monday, 13 June 2016 14:00 (15 minutes)

Driven DNA translocation through a nanoscopic pore has been the focus of many studies in recent years both due to its importance in biological processes and as a promising new technology to probe single DNA molecules. However, the simple process of driving monodisperse DNA chains through a pore often leads to surprisingly wide distributions of translocation times. In theregime where the driving force is high, such that translocation occurs much faster than the time required for the chain to relax, the different conformations that a DNA chain can have at the initiation of the translocation is a major contributor to this broadening. As an effort to reduce the broad distribution of translocation times, we test a situation where the DNA is placed inside a small nanotube whose purpose is to limit the range of initial conformations. We present the results of coarse-grained Langevin Dynamics simulations where the DNA is confined inside both infinitely long tubes and finite-length end-capped tubes. We demonstrate that the results for both tube geometries can be reproduced by a theoretical Tension-Propagation model. Since the end-capped tube contains an extra degree of freedom compared to the semi-infinite tube, we show how both cases need different strategies in order to minimize the coefficient of variation, and obtain tighter distributions of the translocation time.

Primary author: SEAN, David (University of Ottawa) Co-author: Prof. SLATER, Gary W. (University of Ottawa) Presenter: SEAN, David (University of Ottawa) Session Classification: M2-2 Molecular Biophysics (DPMB) / Biophysique moléculaire (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 211 2016 CAP Congr … / Report of Contributions Organization of Nucleotides in Dif …

Contribution ID: 1196 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Organization of Nucleotides in Different Environments: Implications for the Formation of First RNA under Prebiotic Conditions Monday, 13 June 2016 14:15 (15 minutes)

How nucleic acids first assembled and then incorporated into the earliest forms of cellular life4 billion years ago remains a fundamental question of biology. It is postulated that prior to today’s DNA, RNA, and protein-dominated world, RNA was used for genetic storage and as a catalyst for reactions, such as polymerization. RNA is a polymer chain of nucleotides linked to a ribose- phosphate backbone. Polymerization of nucleotides occurs in a condensation reaction in which phosphodiester bonds are formed. However, in the absence of enzymes and metabolism there has been no obvious way for RNA-like molecules to be produced and then encapsulated in cellular compartments, an essential first step in the origin of cellular life. To support the hypothesis that environmental conditions in the neighbourhood of volcanic hy- drothermal springs could act to organize monomeric nucleotides through various noncovalent interactions and chemical reactions in the prebiotic era, we investigated 5’-adenosine monophosphate (AMP) and 5’-uridine monophosphate (UMP) molecules captured in different matrices that have been proposed to promote polymerization, namely multi-lamellar phospholipid bilayers, nanoscopic films, ammonium chloride salt crystals and Montmorillonite clay [1]. Two nucleotides signalswere observed in our X-ray diffraction experiments, one corresponding to a nearest neighbour distance of around 4.6 Å and a second, smaller distance of 3.45 Å. While the 3.45 Å distance agrees well with the distance between stacked base pairs in the RNA backbone, the 4.6 Å distance can be attributed to un-polymerized nucleotides that form a disordered, liquid-like structure. Fromthe relative strength of the two contributions, the effectiveness of the different environment for producing RNA-like polymers was determined.

[1] S Himbert, M Chapman, DW Deamer, Maikel C. Rheinstädter, submitted to PLOS ONE.

Primary author: HIMBERT, Sebastian (Mcmaster University) Co-authors: Prof. DEAMER, David (University of California, Santa Cruz, Department of Biomolec- ular Engineering); RHEINSTADTER, Maikel (McMaster University); CHAPMAN, Mindy Presenter: HIMBERT, Sebastian (Mcmaster University) Session Classification: M2-2 Molecular Biophysics (DPMB) / Biophysique moléculaire (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 212 2016 CAP Congr … / Report of Contributions Neutrino-less double beta decay se …

Contribution ID: 1197 Type: Oral (Non-Student) / orale (non-étudiant)

Neutrino-less double beta decay search with Xe-136 and Ba ion tagging R&D Tuesday, 14 June 2016 09:45 (15 minutes)

Neutrino oscillation experiments have shown that neutrinos have finite masses. The study of neutrino-less double beta decay may bring insight on the neutrino mass generation and determine the effective neutrino mass. The next generation neutrino-less double beta decay experiments, with a very large active mass and ultra low background, like the proposed nEXO, will have a sensitivity to the half-life on the order of 10e28 years. These detectors face tremendous challenges for reducing the background due to the trace radioactivity. Standard background reduction techniques have reached a limit and so a novel one must be developed. Double beta decay of Xe-136 produces a Ba-136 ion, the only element for which there is experimentally demonstrated single ion detection and identification capability using resonant light scattering. Tagging the Ba ion canlead to total elimination of the background from radioactive impurities or of cosmic origin. However, applying Ba ion tagging to a massive liquid Xe detector is a challenge. In this talk I will present the field of neutrino-less double beta decay search focusing particularly on Xe-136 as well asthe Ba ion tagging efforts within the EXO collaboration.

Primary author: Prof. GORNEA, Razvan (Carleton University) Presenter: Prof. GORNEA, Razvan (Carleton University) Session Classification: T1-5 Neutrinoless Double Beta Decay II (PPD-DNP-DTP) / Double désintégration beta sans neutrino II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 213 2016 CAP Congr … / Report of Contributions Electron spin resonance spectra of …

Contribution ID: 1198 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Electron spin resonance spectra of strontium aluminate at high microwave fields and strong illumination Tuesday, 14 June 2016 19:44 (2 minutes)

Strontium aluminate co-doped with europium and dysprosium [SrAl2O4(Eu2+,Dy3+)] is a popular long-lasting (~10 hrs) phosphor for security signs, medical diagnostics, and other applications. Al- though it has been 20 years since the discovery of persistent luminescence (PL) in SrAl2O4(Eu2+,Dy3+), the associated physical mechanism is still unclear. Electron spin resonance (ESR) is a powerful technique to investigate the excitation of paramagnetic centers in solids, and the associated energy transfer processes. It was previously observed [1] that the intensity of the ESR signal of SrAl2O4(Eu2+,Dy3+) decreases under illumination and is restored upon remission of light during PL, a phenomenon that has been taken as evidence of the transformation of ESR-active Eu2+ centers into diamagnetic Eu3+ under illumination, and their recovery upon PL remission. Here, we present the ESR spectra of SrAl2O4(Eu2+,Dy3+) in the X microwave band, in the dark and under illumination by violet (405 nm) light. At high enough microwave field or sufficiently long and intense illumination, a “negative” ESR signal is observed, which, clearly, cannot be associated to negative concentrations of Eu2+ centers. Our findings put in question the validity of the current interpretation of the ESR spectra and PL mechanism in SrAl2O4 (Eu2+,Dy3+). We propose that the transformation of the ESR spectra at high microwave power and under illumination is due to dephasing of the ESR signal as a consequence of extremely long spin-lattice relaxation times in (Eu2+,Dy3+)SrAl2O4, a phenomenon that may also be responsible to persistent luminescence.

[1] Clabau, Frédéric, et al. Chemistry of materials 17.15 (2005): 3904-3912.

Primary author: LI, ye (uwo) Co-authors: Dr AKBARI-SHARBAF, Arash (western university); FANCHINI, Giovanni (The Uni- versity of Western Ontario); Mr MURPHY, Patrick (western university); Prof. ZHAO, yan (beihang university)

Presenter: LI, ye (uwo) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 214 2016 CAP Congr … / Report of Contributions T2K Phase II: towards initial disco …

Contribution ID: 1199 Type: Oral (Non-Student) / orale (non-étudiant)

T2K Phase II: towards initial discovery of CP violation in neutrino oscillations Wednesday, 15 June 2016 14:00 (15 minutes)

The recent discovery of muon neutrino to electron neutrino conversion arising from neutrino oscillations has opened the door to the possibility for CP violation in neutrino oscillations. Such CP violation will be an important clue to how our universe came to our matter dominated state and for understanding the mass and mixing structure of neutrinos, a question left unanswered by the Standard Model. Furthermore, the currently measured parameters weakly suggest a potentially large CP violation effect in neutrino oscillations that may be accessible to the current generation of experiments. In this talk, we will discuss T2K Phase II, a possible extension to the T2K program with higher beam power and three times the data that may allow the first definitive look atCP violation in neutrino oscillations.

Primary authors: TANAKA, Hirohisa A. (University of British Columbia); FEUSELS, Tom (UBC)

Presenter: FEUSELS, Tom (UBC) Session Classification: W2-4 Neutrino Physics (PPD-DNP-DTP) / Physique des neutrinos (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 215 2016 CAP Congr … / Report of Contributions Lateral silicon structures for light- …

Contribution ID: 1200 Type: Oral (Non-Student) / orale (non-étudiant)

Lateral silicon structures for light-trapping enhancement in solar cells Wednesday, 15 June 2016 09:00 (15 minutes)

Si wires vertically grown by the vapor-liquid-solid (VLS) method have been frequently reported in literature, and has been considered as the long-standing symbolic image of this method. The efforts have been focused on studying the vertical Si wires-based solar cells in the last decades. In this study, the lateral or horizontal growth of Si wires recently reported by our group has been incorporated into Si-based solar cell devices. The reduction of optical losses is one of the important factors in obtaining high-efficiency solar cells. In order to achieve this, the top surface ofthe solar cells are often texturized or covered with antireflection coating. Lateral Si wires andSifilm with various morphologies are on the solar cell devices fabricated on Si(001) substrates by the molecular beam epitaxy (MBE). Enhancement of light trapping in the presence of top epitaxial layer was demonstrated. We analyzed the surface morphology and size distribution of Si wires and alternative morphological features by scanning electron microscopy (SEM). Our results show that the lateral growth of silicon wires has been only initiated around the carbon-contaminated Au catalyst particles covered surface areas. The performance of lateral Si wire-based solar cells has been tested and correlated with topmost Si layer morphology. Efficiency enhancement by 1.5 to2.5 times was observed for highly corrugated surfaces. Notably, the best efficiencies are achieved for Si overlayer structures (Si wires, ridges and films), where significant area on the surface becomes covered with rough epitaxial Si structures, and the magnitude of the surface roughness exceeds 200-500nm. Different mechanisms contributing to this enhancement will be discussed.

Primary author: GONCHAROVA, Lyudmila (The University of Western Ontario) Co-authors: Mrs GE, Ruiping (Department of Physics and Astronomy, Western University, London, ON, N6A 3K7, Canada); Dr DEDYULIN, Sergey (National Metrology Institute, NRC, Ottawa, ON, K1N 5A2, Canada); Mr DING, Shuyu (Department of Electrical Engineering, Carleton University, Ottawa, ON, K1S 5B6, Canada); Prof. YE, Winnie (Department of Electrical Engineering, Carleton University, Ottawa, ON, K1S 5B6, Canada)

Presenter: GONCHAROVA, Lyudmila (The University of Western Ontario) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 216 2016 CAP Congr … / Report of Contributions Calibration of a Larmor Clock for …

Contribution ID: 1201 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Calibration of a Larmor Clock for Tunneling Time Experiments Wednesday, 15 June 2016 16:00 (15 minutes)

How much time does it take for a particle to tunnel? This has been a controversial question for nearly a century because of the inability to make a direct measurement of time. One operational definition for the tunnelling time is the Larmor clock, in which the spin degree of freedomofa tunneling particle is used as a clock that ticks only inside the forbidden region due to the presence of a magnetic field localized to within the barrier. Here, we report the calibration of aLarmor clock to measure tunneling times. Our system is a 87 Rb Bose Einstein condensate in the F=2 ground state manifold, traversing an optical waveguide. We use the Zeeman sublevels (a spin-2 system) and Raman beams for the implementation of the Larmor clock. Experimental progress towards measuring the tunneling time and the challenges involved in this measurement will also be discussed.

Primary author: Mr RAMOS, Ramon (University of Toronto) Co-authors: Prof. STEINBERG, Aephraim (University of Toronto); Mr SPIERINGS, David (Uni- versity of Toronto); Mr EBADI, Sepehr (University of Toronto); Dr POTNIS, Shreyas (University of Toronto)

Presenter: Mr SPIERINGS, David (University of Toronto) Session Classification: W3-6 Cold and Trapped Atoms, Molecules and Ions (DAMOPC) / Atomes, molécules et ions froids et piégés (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 217 2016 CAP Congr … / Report of Contributions A Method to Arbitrarily Transform …

Contribution ID: 1202 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

A Method to Arbitrarily Transform the Polarization of Light Variably Across a Beam Monday, 13 June 2016 14:00 (15 minutes)

Light fields with spatially varying polarization have a wide range of potential uses in theareas of telecommunication, imaging, lithography, and quantum information. A spatial light modulator (SLM) is a two dimensional array of liquid crystal cells that can control phase, polarization, and intensity of light point by point across a beam’s spatial profile. We have developed methods to implement general polarization transformations using SLMs. That is, we can apply arbitrary polarization rotations that vary controllably across a beam. In quantum information, our methods in principle could enable the parallel processing of millions of optical modes, one for each cell. As an experimental example of the power of these methods, we take a beam with a non-uniform polarization across its spatial profile and convert it to be uniform. Such a correction couldbe useful for astronomy or microscopy imaging systems that suffer from polarization aberrations. In order to demonstrate the procedure’s effectiveness we present point by point measurements ofthe polarization before and after the correction.

Primary author: Mr RUNYON, Matthew (Department of Physics and Max Planck Centre for Ex- treme and Quantum Photonics, University of Ottawa, Canada)

Co-authors: Ms SIT, Alicia (Department of Physics and Max Planck Centre for Extreme and Quan- tum Photonics, University of Ottawa, Canada); Dr KARIMI, Ebrahim (Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, Canada); Dr LUNDEEN, Jeff (Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, Canada); Dr GINER, Lambert (Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, Canada); Ms GRANADOS-BAEZ, Marissa (Depart- ment of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, Canada)

Presenter: Mr RUNYON, Matthew (Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, Canada) Session Classification: M2-3 Ultrafast and Time-Resolved Processes (DAMOPC) / Procédés ultrarapides et résolus dans le temps (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 218 2016 CAP Congr … / Report of Contributions Production of Silicon Strip Module …

Contribution ID: 1203 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Production of Silicon Strip Modules for the ATLAS Phase-II Upgrade of the Inner Detector Wednesday, 15 June 2016 09:00 (15 minutes)

The Phase-II upgrade of the Large Hadron Collider (HL-LHC) will increase the luminosity ofthe machine by a factor of 10, providing an additional integrated luminosity of 3000 fb-1 over the course of 10 years. The present ATLAS inner detector must therefore be completely replaced in order to cope with the high pileup and radiation environment of the HL-LHC. The new all-silicon tracker (ITk) will be composed of pixel and strip layers, an extensive undertaking which will involve the coordinated effort of many groups around the world. After the development ofaded- icated lab and clean room, the University of Toronto, in partnership with industry, successfully fabricated and tested the first ITk silicon strip modules produced entirely in Canada. Theread- out boards (”hybrids”) of individual strip modules are wire-bonded to the silicon, and as such the success and reliability of these bonds are crucial for the functioning and longevity of the detector. Optimization of the wire-bonding process is therefore very important, in addition to ensuring even and precise glue heights between the hybrids, silicon, and other surface-mounted components. As the next phase of prototype fabrication begins, studies of wire-bonding optimization and metrology are performed. In addition, we are investigating the possibility of industrializing the production process of the hybrids in anticipation of mass-production. Finally, we are implementing a beta test set-up for the characterization and testing of electrical modules.

Primary author: VELOCE, Laurelle Maria (University of Toronto (CA)) Co-authors: KEOSHKERIAN, Houry (University of Manchester (GB)); ZUTT, Nicholas (University of Toronto); DI SIPIO, Riccardo (University of Toronto (CA)); TEUSCHER, Richard (Toronto); ORR, Robert (University of Toronto (CA)); ABIDI, Syed Haider (University of Toronto (CA)) Presenter: VELOCE, Laurelle Maria (University of Toronto (CA)) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 219 2016 CAP Congr … / Report of Contributions Muon Veto for the PICO Dark Mat …

Contribution ID: 1204 Type: Oral (Non-Student) / orale (non-étudiant)

Muon Veto for the PICO Dark Matter Search Experiment Thursday, 16 June 2016 10:00 (15 minutes)

The PICO (PICASSO+COUPP) experiment searches for cold dark matter through the direct detection of weakly interacting massive particles (WIMPs) via their spin-dependent interactions with fluorine at SNOLAB, Sudbury - ON. The detection principle is based on the bubble chambertech- nique. The muon veto for PICO-60 experiment has been developed to reject the signals frommuons. Muons interaction can produce neutrons which can mimic the signals from WIMPs. In this talk the model, software and hardware of muon veto will be discussed.

Primary author: Dr PODVIIANIUK, RUSLAN (Laurentian University) Presenter: Dr PODVIIANIUK, RUSLAN (Laurentian University) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 220 2016 CAP Congr … / Report of Contributions The Unified Formulation of Scatte …

Contribution ID: 1205 Type: Oral (Non-Student) / orale (non-étudiant)

The Unified Formulation of Scattering Thursday, 16 June 2016 09:45 (15 minutes)

In 2003 Witten showed that the leading order of scattering amplitudes in the maximally supersymmetric gauge theory (MSYM) in four dimensions can be computed using a string-like formulation. Amplitudes are correlation functions computed on a punctured Riemann sphere. For many years this phenomenon was thought to be special to MSYM. In 2013, an explosion of string-like formula- tions were discovered which are now known as CHY formulas. In this talk I will explain the CHY formulation and how it provides a unified description of the S-matrix of theories such as Einstein gravity, Yang-Mills, Dirac-Born-Infeld, the non-linear sigma model and Galileons.

Primary author: Dr CACHAZO, Freddy (Perimeter Institute) Presenter: Dr CACHAZO, Freddy (Perimeter Institute) Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 221 2016 CAP Congr … / Report of Contributions Phenomenological constraints on a …

Contribution ID: 1206 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Phenomenological constraints on a model with a Higgs-like dilaton and singlet scalar dark matter Wednesday, 15 June 2016 14:00 (15 minutes)

We consider a variant of the Standard Model with a Higgs-like dilaton, extended to include a singlet scalar dark matter candidate. In this model, the properties of the dilaton are constrained by the observed Higgs properties, dark matter relic abundance, and dark matter direct detection limits, as well as the latest collider limits. We place constraints on the free parameters of the model: the scale of conformal symmetry breaking f, the mass of the dark matter, and the ultraviolet contribution to the running of the dilaton-photon and dilaton-gluon couplings at a scale above conformal symmetry breaking, bUV . The latter we treat as a free parameter to reflect our ignorance of the high-energy behavior of the underlying conformally invariant theory. We explore how the model can be further probed by future measurements.

Primary author: CAMPBELL, Robyn (Carleton University) Co-authors: DE LA PUENTE, Alejandro (TRIUMF); GODFREY, Stephen (Carleton University)

Presenter: CAMPBELL, Robyn (Carleton University) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 222 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Application of …

Contribution ID: 1207 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

**WITHDRAWN** Application of Wavelength Shifter to the Acrylic Vessel in the DEAP-3600 Dark Matter Search Monday, 13 June 2016 16:30 (15 minutes)

DEAP-3600 is a single phase liquid argon dark matter search experiment. The target consists of 3600 kg of liquid argon, contained in a spherical acrylic vessel and viewed by a surrounding array of photomultiplier tubes (PMTs). Particle interactions in liquid argon produce scintillation light in the vacuum ultraviolet (VUV) spectrum, which is efficiently absorbed by the surrounding acrylic. To make interactions in the target volume visible to the PMTs, the inner surface of the acrylic sphere was coated with the organic wavelength shifter, 1,1,4,4-tetraphenyl-1,3-butadiene (TPB), which has a re-emission spectrum for VUV light in the blue-visible regime. During the final stage of construction, a 3 micrometer thick coating of TPB was applied to the vessel’s inner surface using vacuum deposition. This talk will present details on the final deposition, thickness considerations, and ex-situ sample analysis results.

Primary author: BROERMAN, Benjamin (Queen’s University) Presenter: BROERMAN, Benjamin (Queen’s University) Session Classification: M3-5 Cosmic frontier: Dark matter I (PPD) / Frontière cosmique: matière sombre I (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 223 2016 CAP Congr … / Report of Contributions The KDK project: measuring the d…

Contribution ID: 1208 Type: Oral (Non-Student) / orale (non-étudiant)

The KDK project: measuring the decay of 40K Thursday, 16 June 2016 13:45 (15 minutes)

Potassium-40 (40K) is a background in many rare-event searches, including the DAMA/LIBRA experiment whch claims to have detected the elusive dark matter which may make up most of the matter in the universe. The electron capture of 40K to 40Ar releases ~3 keV X-rays andAuger electrons that fall into DAMA’s region of interest. In most cases, the decay is to an excited state of 40Ar and is accompanied by the emission of a 1.46 MeV gamma ray that can be used to tag and reject some of the X-rays and electrons. However, the decay can also go directly to the ground state of 40Ar, leaving no means to tag the low-energy contribution to the background. The branching ratio of the direct decay is predicted to be small, but has never been measured, as pointed out by Pradler, Singh and Yavin (PLB 720 2013). This decay would also be the only known example ofa unique third forbidden nuclear decay.

In the KDK (40K decay) project, we propose to measure this branching ratio, using a 40K source, a small inner detector to trigger on X-rays, and a large, efficient outer tagger to look for the 1.46 MeV gammas distinguishing between electron capture modes. We present the experiment, which will use the large MTAS (Modular Total Absorption Spectrometer) tagger located at Oak Ridge National Laboratories. It detects gamma rays with high efficiency (total absorption efficiency around 99%at 1.46 MeV). We will also discuss options for X-ray detection, which include novel potassium-based scintillators with very high light yield, and will conclude with the expected sensitivity and status of the project.

Primary authors: Dr GROSS, Carl J (ORNL); Dr RASCO, Charles B (ORNL); Dr MELCHER, Chuck (University of Tennessee, Knoxville); Dr LUKOSI, Eric (University of Tennessee, Knoxville); Dr YAVIN, Itay (Perimeter Institute); Dr ALLMOND, James (ORNL); Dr RYKACZEWSKI, Krzysztof Pi- otr (ORNL); Dr WOLIŃSKA-CICHOCKA, Marzena (Heavy Ion Laboratory, University of Warsaw and ORNL); STUKEL, Mathew (Queens University); Dr DI STEFANO, Philippe (Queen’s University); Dr GRZYWACZ, Robert (ORNL); Dr LIU, Yuan (ORNL) Presenter: Dr DI STEFANO, Philippe (Queen’s University) Session Classification: R2-3 Testing Fundamental Symmetries II (PPD-DNP-DTP) / Tests de symétries fondamentales II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 224 2016 CAP Congr … / Report of Contributions Farley-Buneman waves at large as …

Contribution ID: 1210 Type: Oral (Non-Student) / orale (non-étudiant)

Farley-Buneman waves at large aspect angles Monday, 13 June 2016 11:30 (15 minutes)

The Farley-Buneman (FB) instability mechanism provides an excellent explanation for thepres- ence of large amplitude plasma waves in the cm to few m wavelength range in the high latitude E region whenever the ambient electric field exceeds 20 mV/m. Observations suggest that the instabilities are observed at their threshold speed when they reach their largest amplitudes. This can be explained in terms of a combination of decreasing electric field and increasing aspect angle inside individual structures. However, another feature of observations is that linear theory predicts instability for aspect angles smaller than 1.5 degree, up to maybe 2 degrees even though there is plenty of evidence to show that large amplitude structures exist at aspect angles well beyond 2 degrees during Farley-Buneman events. We show that this observational feature is caused by the weak altitude dependence of the eigenfrequency, which forces the aspect angle to grow monotoni- cally with time. This means that after the structures have reached their maximum amplitude, they continue to exist, but with the caveat that their aspect angle increases while their amplitude decreases. This allows damped modes at large aspect angles to be observed. However, as the aspect angle increases, the phase velocity of the waves will also change, although that change is actually a strong function of the wavelength of the structures. This means that we must assess the real and imaginary part of the eigenfrequency to query the Doppler shift of the structures and see how they compare with observations at different radar frequencies. To this goal, we have studied both the simple fluid isothermal dispersion relation, as well as the full kinetic dispersion. Our resultsfor sub-meter wavelengths show that the phase velocity remains very constant at only slightly less than the ion-acoustic speed as the aspect angle increases. At larger wavelengths, the transition to zero phase velocity proceeds according to Vd/(1+psi), a result in agreement with the simple fluid predictions based on small growth rate considerations. The transition wavelength is controlled by the ion collision frequency. We have used our calculations to determine how the phase velocity and the growth/decay rate depend on altitude (or collision frequency) and electric field conditions. The phase velocity calculations compare favorably with observations.

Primary author: PERRON, patrick (RMCC) Co-author: Prof. ST-MAURICE, Jean-Pierre (University of Saskatchewan) Presenter: PERRON, patrick (RMCC) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 225 2016 CAP Congr … / Report of Contributions Pulse Finding and Single Photon C …

Contribution ID: 1211 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Pulse Finding and Single Photon Counting for the DEAP-3600 Experiment Wednesday, 15 June 2016 13:15 (15 minutes)

DEAP-3600, comprised of a 1 tonne fiducial mass of ultra-pure liquid argon, is designed to achieve world-leading sensitivity for spin-independent dark matter interactions. DEAP-3600 uses an array of photomultiplier tubes (PMTs) to measure the time distribution of scintillation light arising from the de-excitation of argon dimers. This measurement allows background events from Ar-39 decays to be rejected at a high level using pulse shape discrimination. The performance of this analysis relies critically on DEAP’s ability to identify pulses in the PMT waveforms and accurately assess the number of photo-electrons contributing to each pulse. This talk will present an algorithm developed for finding pulses and identifying the number of photo-electrons, as well as removing pulses from unwanted PMT artifacts. A method for quickly identifying single-photoelectron-like pulses and its use to provide a high level of data compression will also be discussed.

Primary author: MCELROY, Thomas (University of Alberta) Presenter: MCELROY, Thomas (University of Alberta) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 226 2016 CAP Congr … / Report of Contributions A Non-Local Lorentz-Invariant Qu …

Contribution ID: 1212 Type: Oral (Non-Student) / orale (non-étudiant)

A Non-Local Lorentz-Invariant Quantum Spacetime Tuesday, 14 June 2016 17:15 (15 minutes)

From the EPR paper in 1935, to Bell’s theorem in the 1960s, to Aspect’s EPR experiment in the 1980s and its recent refinements demonstrating km range correlations, it has become increasingly clear that entangled quantum mechanical systems are inherently nonlocal. EPR experiments highlight the theoretical divergence between quantum mechanics (QM) as a theory of matter in need of a theory of spacetime and special relativity (SR), for which the converse is true. Essentially by definition, quantum nonlocality is incompatible with an interpretation of Minkowskian spacetime as a single 4D metric space, in which all relations between points are defined by a metric. A priori, one might expect that QFT, as a successful theory incorporating both relativistic and quantum concepts, would provide a conceptual unification of spacetime and quantum theory, but this has not proven to be the case. Also, despite the wide variety of interpretations of quantum mechanics, no consensus ontology has emerged.

Quantum nonlocality demands some form of nonlocal spacetime: we consider here a spacetime consisting of multiple coexisting metric spaces. Within any one space its own metric ensures locality, but between spaces no metric is defined, so interactions between points in different spaces are inherently non-local. Following this (while honoring Lorentz invariance), we outline a new proposal in which special relativistic spacetime is reinterpreted as a superposition of multiple 4D spaces. Each space contains unique content, described by a complex-valued density function. By then postulating a coupling between spaces, quantum mechanical features such as non-locality, superposition and wave behavior naturally emerge. Remarkably, Planck’s constant is shown to govern the coupling between spaces, revealing a fundamental interdependence between spacetime and quantum concepts. The resulting picture is of a set of superposed metric spaces tightly coupled by a ‘quantum glue’ in proportion to m/h. We show that this is compatible with existing SR & QM theories, with however momentum as the fundamental physical basis of quantum superposition, and so having significant implications for the quantum ‘measurement problem’. The coexistence of multiple spaces necessitates a redundancy of physical description, providing an explanation for the origin of gauge theories.

Primary author: SHARP, Jonathan (University of Alberta) Presenter: SHARP, Jonathan (University of Alberta) Session Classification: T3-4 Quantum Gravity and Quantum Cosmology (DTP) / Gravité quantique et cosmologie quantique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 227 2016 CAP Congr … / Report of Contributions Spectroscopic and time-resolved m …

Contribution ID: 1213 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Spectroscopic and time-resolved measurements of the fluorescence of pyrene at low temperatures for noble liquid particle detectors Tuesday, 14 June 2016 17:00 (15 minutes)

Pyrene is an interesting material because of its wavelength shifting properties. When irradiated with ultraviolet light, pyrene will emit light in the visible wavelengths. This property could be useful for experiments looking to observe scintillation light from noble gases such as argon and neon, which are popular target materials for dark matter direct detection experiments. Noble gases scintillate in the ultraviolet, and wavelength shifting materials are used to generate visible light observable with standard light detectors. These noble gas detectors are usually operated at cryogenic temperatures, so the performance of pyrene as a wavelength shifter at low temperatures is relevant to its use in such experiments. Relatively long fluorescence lifetime of pyrene provides a possibility to use pulse shape discrimination for rejection of backgrounds caused by alpha activity in regions of the detector where light collection is poor.

We have studied the light emission of pyrene under ultraviolet light excitation at Queen’s Uni- versity using an optical cryostat down to 3.4 K. The high vapour pressure of pyrene causes thin films to evaporate when exposed to the vacuum required to achieve colder temperatures, sowe have developed samples of acrylic with dissolved pyrene to prevent the loss of material. Photomul- tiplier tubes combined with the multiple photon-counting coincidence (MPCC) method allow us to extract the time structure of pyrene fluorescence in response to nanosecond pulses of vacuum ultraviolet light. We also use a spectrometer to measure the wavelength spectra of the emitted light at multiple temperatures to understand its performance. We present the results of both time- resolved and spectroscopic studies of pyrene dissolved in acrylic at low temperatures, including those of noble liquids.

Primary author: CLARK, Michael (Queen’s University) Co-authors: KUZNIAK, Marcin (Queen’s University); ZHENG, Miaofen (Queen’s University); DI STEFANO, Philippe (Queen’s University)

Presenter: CLARK, Michael (Queen’s University) Session Classification: T3-5 Cosmic Frontier: Dark Matter III (PPD) / Frontière cosmique: matière sombre III (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 228 2016 CAP Congr … / Report of Contributions Search for a permanent electric di …

Contribution ID: 1214 Type: Invited Speaker / Conférencier invité

Search for a permanent electric dipole moment of the Ra-225 atom Wednesday, 15 June 2016 09:00 (30 minutes)

The observation of a permanent electric dipole moment (EDM) in a non-degenerate system would indicate violation of time reversal symmetry (T violation) or, equivalently, C(charge)P(parity) violation due to the CPT theorem. The diamagnetic Ra-225 atom is a favorable system in thesearch for a permanent EDM. This is because the experimental sensitivity to CP violation in radium is enhanced due to its high atomic mass and its octupole deformed nucleus. Ra-225 has nuclear spin I=1/2 and a half-life of 14.9 days. Due to radium’s low vapor pressure and its relative scarcity, we use techniques of laser cooling and trapping to enhance our sensitivity to small number of atoms. The experiment involves collecting laser cooled radium atoms in a magneto-optical trap(MOT), transporting them 1 meter with a far off-resonant optical dipole trap (ODT) and then transferring the atoms to a second standing-wave ODT in an experimental chamber. In this talk I will discuss the recent results from the experiment and plans for future improvements.

Primary author: KALITA, Mukut (Triumf) Co-authors: Dr T. SINGH, Jaideep (National Superconducting Cyclotron Laboratory & Michigan State University); Mr GREENE, John (Argonne National Laboratory); Mr BAILEY, Kevin (Argonne National Laboratory); Dr DIETRICH, Matthew (Argonne National Laboratory); Dr BISHOF, Michael (Argonne National Laboratory); Dr LEMKE, Nathan (Space Dynamics Laboratory); Dr MUELLER, Peter (Argonne National Laboratory); Dr PARKER, Richard (University of California at Berkeley); Dr HOLT, Roy (Argonne National Laboratory); Mr O’CONNER, Thomas (Argonne National Laboratory); Dr KO- RSCH, Wolfgang (University of Kentucky); Dr LU, Zheng-Tian (Argonne National Laboratory & Uni- versity of Science and Technology, China)

Presenter: KALITA, Mukut (Triumf) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 229 2016 CAP Congr … / Report of Contributions Pseudospin representation of the …

Contribution ID: 1215 Type: Oral (Non-Student) / orale (non-étudiant)

Pseudospin representation of the two-site Anderson-Hubbard model Thursday, 16 June 2016 09:00 (15 minutes)

The state of an Anderson localized system can be described in terms of the occupation ofaset single-particle wave functions which are localized in space. When interactions are added, single- particle wave functions are no longer well defined, so what is a useful description of the state of a many-body localized system and what about it is localized? Given that any system with Hilbert-space dimension 2N may be described by an Ising-type Hamiltonian, it has been proposed that in a fully many-body localized system the Ising pseudospins in this representation may be chosen to be local. Actually constructing these spins is non-trivial. While a number of approaches have been proposed, few explicit examples exist and almost all work has been on spin systems. Here we present the Hamiltonian of a two-site Hubbard model with disorder and nearest-neighbor interactions written in terms of pseudospins, and we explore the form of these pseudospins and their evolution as a function of hopping amplitude.

Primary author: WORTIS, Rachel (Trent University) Co-author: KENNETT, Malcolm (Simon Fraser University) Presenter: WORTIS, Rachel (Trent University) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 230 2016 CAP Congr … / Report of Contributions Real-space renormalization group …

Contribution ID: 1216 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Real-space renormalization group approach to the Anderson model Tuesday, 14 June 2016 19:16 (2 minutes)

Real-space renormalization group approach to the Anderson model

Many of the most interesting electronic behaviors currently being studied are associated with strong correlations. In addition, many of these materials are disordered either intrinsically or due to doping. Solving interacting systems exactly is extremely computationally expensive, and moreover approximate techniques developed for strongly correlated systems do not adapt to the inclusion of disorder easily. However a real-space renormalization group (RSRG) approach seems ideally suited for strongly disordered systems. While this approach has been successfully applied to many systems, few applications have been specific to the Anderson model. We present aRSRG study of the Anderson model, benchmarking density of states and inverse participation ratio results against exact diagonalization. Our approach points to the possibility of a RSRG approach to strongly disordered and interacting systems of significantly greater size than currently possible with exact diagonalization

Primary author: CAMPBELL, Eamonn (Trent University) Co-author: WORTIS, Rachel (Trent University) Presenter: CAMPBELL, Eamonn (Trent University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 231 2016 CAP Congr … / Report of Contributions Measurement of the electromagne …

Contribution ID: 1217 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Measurement of the electromagnetic background radiation during SuperKEKB commissioning Monday, 13 June 2016 13:45 (15 minutes)

The SuperKEKB electron-positron collider, aiming to deliver an unprecedented peak instantaneous luminosity to the Belle-II experiment, was operated for the first time at the beginning of this year. The expected luminosity — 40 times that delivered to the Belle experiment — demands careful prediction and characterization of the machine-induced background radiation and its effect on the detector. Of particular interest is the prediction of the impacts on the performance and longevity of the electromagnetic calorimeter. To rely exclusively on simulation of the new and unknown SuperKEKB machine for such predictions would be rather daring, therefore the goal of the experiment is to measure the electromagnetic background rate and spectra in the so-called end-cap regions of the calorimeter, where it is predicted to be the largest. We used six calorimeter units each containing three types of crystal scintillators, all read out by photo-multiplier tubes. These units were placed in the forward and in the backward regions ofthe interaction region, at positions reproducing those of the Belle-II calorimeter end-cap crystals. We record the arrival time and deposited energy for each hit, and the different crystal materials will provide sensitivity to different parts of the spectra.

We are taking data since February, during the accelerator commissioning and always changing beam conditions. We want to capture the relationships between the background observables and accelerator quantities such as the bunch size, the beam current, and the pressure in the vacuum chamber. It is the scaling of the background compared to the beam parameters that will enable us to disentangle the dominant physical processes behind observed beam loss events, and test how well each of these processes is simulated. The measurement campaign coincides with the first phase of SuperKEKB commissioning, and is planned to end on June 30th, 2016.

Primary author: BEAULIEU, Alexandre (University of Victoria) Presenter: BEAULIEU, Alexandre (University of Victoria) Session Classification: M2-5 Energy Frontier: SUSY and Exotics (PPD) / Frontière d’énergie: supersymétrie et particules exotiques (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 232 2016 CAP Congr … / Report of Contributions A selection of results from e-POP …

Contribution ID: 1218 Type: Oral (Non-Student) / orale (non-étudiant)

A selection of results from e-POP RRI polarimetry experiments Tuesday, 14 June 2016 08:45 (15 minutes)

Since the outset of science operations with the Enhanced Polar Outflow Probe (e-POP) Radio Re- ceiver Instrument (RRI) in September 2013, over 100 conjunctions with Super Dual Auroral Radar Network (SuperDARN) radars have been completed. With the cross-dipole configuration of RRI’s four monopole antennas, and the receiver’s high sampling rate, it is possible to determine the polarization state of an individual SuperDARN pulse incident on the receiver. The SuperDARN Saska- toon system transmits a linearly polarized radar pulse which can become separated into packets of elliptically polarized O- and X-mode polarization states as the pulse propagates through to the birefringent ionosphere. Therefore, the full analysis of a SuperDARN pulse may require resolving its O- and X-mode components. We present the results from a selection of e-POP RRI polarimetry experiments with the SuperDARN Saskatoon system, and compare them to past theoretical predictions. The importance of the geometry of an experiment to the resulting polarization measured is discussed.

Primary author: Dr PERRY, Gareth (University of Calgary) Co-authors: Dr YAU, Andrew (University of Calgary); Mr HIRD, Fraser (University of Saskatchewan); Dr HUSSEY, Glenn (University of Saskatchewan); Dr JAMES, Gordon (University of Calgary); Dr MCWILLIAMS, Kathryn (University of Saskatchewan); Dr GILLIES, Robert (University of Calgary) Presenter: Dr PERRY, Gareth (University of Calgary) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 233 2016 CAP Congr … / Report of Contributions Super-Critical Phase-Matching for …

Contribution ID: 1219 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Super-Critical Phase-Matching for Generation of Structured Light Beams Monday, 13 June 2016 13:45 (15 minutes)

Radially and azimuthally polarized light beams have garnered increased interest for their properties and uses in fundamental and applied optics. Radial polarizations are parallel to the central axis of the beam (at all points pointing toward the beam center); azimuthal polarizations are orthogonal to this, running perpendicular to the central axis of the beam. Photon pairs with these polarizations have applications in quantum information, such as alignment-free quantum key distribution and superdense coding. We present a method to directly produce, through spontaneous parametric down-conversion (SPDC), photon pairs with radial and azimuthal polarizations. In SPDC, a pump photon is absorbed and two lower-frequency photons, the signal and idler, are produced such that energy and momentum are conserved (i.e. phasematching). These photons may be produced in the same direction as the pump beam, in collinear phase-matching, and may have polarizations that are parallel (type I) or orthogonal (type II). In our new geometry, the pump beam is a Bessel-Gauss beam, which we have modeled as a distribution of Gaussian beams forming the surface of a cone. This cone is centered on the crystal axis, which is parallel to the central pump propagation direction. The opening angle of this cone is set so that each Gaussian pump beamin the pump distribution meets the phase-matching conditions. We have simulated the output distributions for the signal and idler photons in type I and type II phase-matching. For type II phase-matching, the signal and idler photons are emitted along three concentric cones, which we have named ‘super-cones’. These photons will have orthogonal polarizations: one will be radially polarized and the other azimuthally polarized. In type I phase- matching, the signal and idler photons will both be azimuthally polarized, and will be emitted along a single super-cone that is collinear with the pump beam. We have demonstrated a novel method to directly produce radially and azimuthally polarized photon pairs. These unique polarization states have applications in quantum information and quantum metrology, and are opening new research directions in these fields. Boeuf, N., et. al. Opt. Eng. 39(4): 1016-1024, 2000.

Quabis, S., et. al. Opt. Comm. 179(1):1-7, 2000.

Primary author: SAALTINK, Rebecca (University of Ottawa) Co-authors: KARIMI, Ebrahim (University of Ottawa); LUNDEEN, Jeff (University of Ottawa); GINER, Lambert; BOYD, Robert (University of Ottawa) Presenter: SAALTINK, Rebecca (University of Ottawa) Session Classification: M2-3 Ultrafast and Time-Resolved Processes (DAMOPC) / Procédés ultrarapides et résolus dans le temps (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 234 2016 CAP Congr … / Report of Contributions Effects of Refractive Index Mismat …

Contribution ID: 1220 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Effects of Refractive Index Mismatch on Stimulated Raman Scattering And Coherent Anti-Stokes Raman Scattering Microscopy Monday, 13 June 2016 13:30 (15 minutes)

Nonlinear optical microscopy techniques, such as stimulated Raman scattering (SRS) and coherent anti-Stokes Raman scattering (CARS), allow for label-free chemically-sensitive non-destructive video-rate imaging of biological processes[1]. SRS is of particular interest due to its improved image contrast, high spectral sensitivity and low acquisition times. Correctly interpreting images produced by nonlinear optical processes is of vital importance. Ear- lier we showed AM-SRS signals depend upon the structure of χ(3) in the background medium, and thus is not background free[2]. We now show that even for the modest linear refractive index mis- matches typically found in biological tissues, near-field enhancements can cause significant signal distortions in both CARS[3] and SRS. We employ finite-difference time-domain simulations to determine the near- and far-fields of wavelength- sized spherical Raman-active objects in a nonresonant Kerr medium illuminated by a tightly- focused laser source. We find that, depending upon the shape of the Raman scatterer, enhanced near-fields can create a signal an order of magnitude larger than what would be expected, and with a peak in the image that does not directly correspond to the object location. Additionally, the radiation pattern is heavily influenced and as a consequence we find that the numerical apertureof the collecting lens becomes important. Filtering techniques will not eliminate any of these effects as these distortions are caused by a microlensing effect within the scatterers. Understanding these distortions is key to correctly interpreting both CARS and SRS images. Even without any Raman-active material present, the underlying χ(1) structure can introduce background signals in AM-SRS and CARS. This highlights the need for frequency-based filtering methods such as FM-SRS and FM-CARS or hyperspectral analysis. References

1. B. Saar et al., Science 330, 1368–1370 (2010). 2. K. Popov et al., Opt. Lett. 37, 473–475 (2012). 3. J. Lin et al., Opt. Express 17, 2423–2434 (2009).

Primary author: VAN DER KOLK, Jarno Nicolaas (University of Ottawa) Co-authors: CALÀ LESINA, Antonino (University of Ottawa); RAMUNNO, Lora (University of Ottawa)

Presenter: VAN DER KOLK, Jarno Nicolaas (University of Ottawa) Session Classification: M2-3 Ultrafast and Time-Resolved Processes (DAMOPC) / Procédés ultrarapides et résolus dans le temps (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 235 2016 CAP Congr … / Report of Contributions Status of the DAMIC Dark Matter …

Contribution ID: 1221 Type: Oral (Non-Student) / orale (non-étudiant)

Status of the DAMIC Dark Matter Experiment Thursday, 16 June 2016 09:15 (15 minutes)

The DAMIC detector, currently taking data at SNOLAB, is a Dark Matter search experiment that employs scientific grade CCDs made of silicon as target material. The low readout noiseof the CCDs yield to a ionization energy threshold below 60 eVee and provides optimal sensitivity for low mass WIMPs (< 20 GeV). The pixelization (15 microns) and superb energy resolution ofthe detectors allow for unique background rejection and identification techniques. We present here an overview of the DAMIC experiment together with a summary of the latest results produced using data acquired at SNOLAB since its installation in December 2012. We also discuss the commissioning schedule and reach of DAMIC100, a 100 g silicon target detector currently being installed at SNOLAB.

Primary author: Dr LAWSON, Ian (SNOLAB) Presenter: Dr LAWSON, Ian (SNOLAB) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 236 2016 CAP Congr … / Report of Contributions Near-field Effects on SHG Imaging

Contribution ID: 1222 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Near-field Effects on SHG Imaging Wednesday, 15 June 2016 09:00 (15 minutes)

Collagen fibrils can be found in a wide array of biological tissues such as bones, tendons, arteries, cornea. They give most of the biological tissues its mechanical properties and as such areanimpor- tant area of research. Second Harmonic Generation (SHG) is a non-linear optical process that is particularly strong in collagen fibrils due to their unique chiral molecular structure, enabling label- free imaging. Furthermore, the radiation pattern correlates with the fibril sizes and orientations in collagen tissue[1], allowing one to study the underlying structure through careful modelling[2], even though the fibril diameters are usually smaller than the SHG wavelength. One key property that is often used for this is the ratio between the far-field signals in the forward and thebackward directions, the F/B ratio[3], as that is linked to fibril size. Our calculations show that the presence of small differences in the refractive index, as commonly found in biological tissue, can have a profound effect on the measured signal of a single fibril. Near-field enhancements cause the SHG signal to come from an area with a smaller radius than the fibril’s geometric radius, significantly altering phase matching conditions for the backward scattered signals. This may skew diameter measurements such as in [3]. It also affects imagingof collagen tissue where a entire distribution of fibrils is in the laser focus. The signal of the smaller fibrils will not change significantly, but of large fibrils it will and those can be present inlarge numbers in collagen tissue. Therefore SHG experiments concerning the direct measurement of fibril diameters need to take these effects into consideration. References

1. J. Mertz et al., Optics Communications 196, 325 – 330 (2001). 2. C. P. Brown at al., Biomed. Opt. Express 5, 233–243 (2014). 3. S. Bancelin et al., Nat Commun 5 (2014).

Primary author: VAN DER KOLK, Jarno Nicolaas (University of Ottawa) Co-authors: KIOULOS, Charalambos (University of Ottawa); RAMUNNO, Lora (University of Ot- tawa)

Presenter: VAN DER KOLK, Jarno Nicolaas (University of Ottawa) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 237 2016 CAP Congr … / Report of Contributions A Farewell to Symmetries: Quasilo …

Contribution ID: 1223 Type: Invited Speaker / Conférencier invité

A Farewell to Symmetries: Quasilocal Frames in General Relativity Monday, 13 June 2016 13:00 (30 minutes)

In this talk, I will give a brief introduction to rigid quasilocal frames (RQF) which have been proposed as a geometrically natural way to define spatially extended reference frames in general relativity. In particular, I will explore their usefulness as a tool for constructing completely general conservation laws that do not rely on the presence of spacetime symmetries and include both matter and gravitational contributions without the need for any ad hoc structures such aspseu- dotensors. In doing so, I show how the RQF approach affords a deeper understanding of the nature of gravitational fluxes via the equivalence principle and discuss more concrete potential applications.

Primary author: Dr MCGRATH, Paul Presenter: Dr MCGRATH, Paul Session Classification: M2-4 Mathematical Physics (DTP) / Physique mathématique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 238 2016 CAP Congr … / Report of Contributions Decay Spectroscopy of Neutron- …

Contribution ID: 1224 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Decay Spectroscopy of Neutron-Rich Cd Around the N = 82 Shell Closure Monday, 13 June 2016 17:00 (15 minutes)

The neutron-rich region around A = 132 is of special interest for nuclear astrophysics andnuclear structure. From an astrophysics perspective, this region is connected with the second r-process abundance peak at A≈130 and the waiting-point nuclei around N = 82. For nuclear structure studies, the neighbours of the doubly-magic 132Sn (Z = 50, N = 82) are an ideal test ground for shell model predictions. The beta-decay of the N = 82 isotope 130Cd into 130In was first investigated a decade ago, but the information for states of the lighter indium isotopes (128,129In) is still limited.

In the present experiment, a detailed gamma-spectroscopy of the beta-decay of 128−132Cd was achieved with the newly commissioned GRIFFIN (Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei) gamma-ray spectrometer, which is capable of measuring down to rates of 0.1 pps. The low-energy cadmium isotopes were implanted into a movable tape at the central focus of the array from the ISAC-I facility at TRIUMF. The beta-tagging was performed using the auxiliary beta-particle detector SCEPTAR. The required beta-gamma(-gamma) coincidence data in high statistics needed to fill the spectroscopic gaps described in literature were obtained. Timing information needed to measure the half-lives of 128−130Cd was collected to resolve previously published discrepancies in those values. The ongoing analysis of these data will be presented.

Primary authors: DILLMANN, Iris; BERNIER, Nikita (TRIUMF); KRUECKEN, Reiner (TRIUMF)

Co-authors: RADICH, Allison (university of Guelph); JUNGCLAUS, Andrea (Universidad Au- tonoma de Madrid); MACLEAN, Andrew (University of Guelph); OLAIZOLA MAMPASO, Bruno (Uni- versity of Guelph (CA)); SVENSSON, Carl (University of Guelph); BURBADGE, Christina; PETRA- CHE, Costel (University Paris Sud); GARCIA, Fatima (Simon Fraser University); BALL, Gordon (TRI- UMF); BIDAMAN, Harris (University of Guelph); PARK, Jason (University of British Columbia/TRIUMF); SMITH, Jenna (TRIUMF); PORE, Jennifer; LASSEN, Jens (TRIUMF); EVITTS, Lee (TRIUMF); DUNLOP, Michelle (University of Guelph); MOUKADDAM, Mohamad (TRIUMF); DUNLOP, Ryan (University of Guelph); ZI- DAR, Tammy (University of Guelph); BILDSTEIN, Vinzenz (Physik-Department E12, TU München); SMALL- COMBE, james

Presenter: BERNIER, Nikita (TRIUMF) Session Classification: M3-1 Nuclear Astrophysics (DNP) / Astrophysique nucléaire (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 239 2016 CAP Congr … / Report of Contributions Cosmology from Quantum Gravity

Contribution ID: 1225 Type: Invited Speaker / Conférencier invité

Cosmology from Quantum Gravity Tuesday, 14 June 2016 16:15 (30 minutes)

I will explain how the large-scale cosmological dynamics can be obtained from the hydrodynamics of condensate states of quantum gravity (to be specific, isotropic group field theory condensate states in the Gross-Pitaevskii approximation). The correct Friedmann equations are recovered in the semi-classical limit for appropriate choices of the parameters in the action for the group field theory, and quantum gravity corrections arise in the high-curvature regime causing abounce which generically resolves the big-bang and big-crunch singularities.

Primary author: WILSON-EWING, Edward (Max Planck Institute for Gravitational Physics (Albert Einstein)

Presenter: WILSON-EWING, Edward (Max Planck Institute for Gravitational Physics (Albert Ein- stein) Session Classification: T3-4 Quantum Gravity and Quantum Cosmology (DTP) / Gravité quantique et cosmologie quantique (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 240 2016 CAP Congr … / Report of Contributions Enhancing the Luminescence of Si …

Contribution ID: 1226 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Enhancing the Luminescence of Silicon Nanoclusters embedded in Silicon Nitride Tuesday, 14 June 2016 09:30 (15 minutes)

In the quest to develop a silicon (Si) based light source, for optical and optoelectronic applications, researchers have explored various techniques. One such technique is the use of self-assembled Si-nanoclusters (Si-NC) embedded in a silicon nitride (Si3Nx) matrix. This system has shown great promise, displaying both photoluminescence and electroluminescence.[1,2] Despite such achieve- ments, the luminescence of Si-NC/Si3Nx devices is still too low in intensity to be used in a commercial light source. An approach that has recently gained interest is the luminescence enhancement of Si-NCs using the localized surface plasmon resonance (LSPR) of metallic nanostructures (m-NS). The majority of research in this area has focused on the use of metals such as gold (Au)andsil- ver (Ag), which are expensive and would increase the cost of any device made using them.[3-6] In our group, we explore how m-NS made using aluminum (Al) can be tailored to enhance the luminescence of Si-NC/Si3Nx devices. Al has the added advantage of being compatible with current manufacturing techniques. To fabricate these m-NS we use nanosphere lithography (NSL). We also examine the mechanisms of luminescence of our Si-NC/Si3Nx devices, to facilitate improvements in luminescence intensity.[7] The results of our work will facilitate the development of commercially viable and cost efficient Si-based light emitting devices.

1. Wang, Y. Q., et al. Applied Physics Letters, 83, 3474 (2003). 2. Cen, Z. H., et al. Journal of Applied Physics, 105, 123101 (2009). 3. Benami, A., et al. AIP Advances, 2, 012193 (2012). 4. Wang, F., et al. Journal of Nanoparticle Research, 15, 1 (2013). 5. Philip, R., et al. Nano Lett, 12, 4661 (2012). 6. Wang, F., et al. Applied Physics Letters, 100, 031113 (2012). 7. Goncharova, L. V., et al. Journal of Applied Physics, 118, 224302 (2015).

Primary authors: Ms CADOGAN, Carolyn (The University of Western Ontario, Department of Physics and Astronomy); Prof. GONCHAROVA, Lyudmila (The University of Western Ontario, Depart- ment of Physics and Astronomy); Prof. SIMPSON, Peter (The University of Western Ontario, Depart- ment of Physics and Astronomy)

Co-authors: Mr ZHANG, Bairong (The University of Western Ontario, Department of Chemistry); Prof. LAGUGNÉ-LABARTHET, François (The University of Western Ontario, Department of Chemistry)

Presenter: Ms CADOGAN, Carolyn (The University of Western Ontario, Department of Physics and Astronomy) Session Classification: T1-3 Materials Characterization: Electrical, Optical, Magnetic, Ther- mal (DCMMP) / Caractérisation des matériaux: électrique, optique, magnétique et thermique (DPMCM)

September 29, 2021 Page 241 2016 CAP Congr … / Report of Contributions Enhancing the Luminescence of Si …

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 242 2016 CAP Congr … / Report of Contributions Magnetic Dipole-Dipole Sensing at …

Contribution ID: 1227 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Magnetic Dipole-Dipole Sensing at the Atomic Scale Monday, 13 June 2016 16:15 (15 minutes)

High-resolution magnetometry is an essential tool used across the sciences. The recent development of electron spin resonance scanning tunnelling microscopy (ESR-STM) opens the door on a new type of magnetometry, one with the ability to coherently manipulate quantum spins with neV energy resolution and sub-nanometre spatial resolution [1]. In this talk I will show recent results obtained from ESR-STM experiments of Fe and Co atoms deposited on an MgO thin film. By characterizing the magnetic dipole-dipole interaction between atoms we are able to determine their magnetic moment to within 40 neV [2]. Combining this energy resolution with the STM’s ability to manipulate atoms we then create and characterize the properties of magnetic nanostructures. Lastly, I will discuss the development of a pulsed ESR-STM scheme and it’s relevance for future experiments in quantum computing and quantum simulation. [1] S. Baumann, W. Paul, T. Choi, C.P. Lutz, A. Ardavan, and A.J. Heinrich, Science 350, 417 (2015)

[2] T. Choi et al., in preparation

Primary authors: Dr HEINRICH, Andreas (IBM Almaden Research Center); Mr MACDONALD, Andrew (University of British Columbia); Mr LUTZ, Christopher (IBM Almaden Research Center); Dr NATTERER, Fabian (École Polytechnique Fédérale de Lausanne); Dr YANG, Kai (School of Physics, University of Chinese Academy of Sciences); Mr ROLF-PISSARCZYK, Steffen (Max Planck Institute for the Structure and Dynamics of Matter); Dr BAUMANN, Susanne (IBM Almaden Research Center & Department of Physics, University of Basel); Dr CHOI, Taeyoung (IBM Almaden Research Centre); Dr PAUL, William (IBM Almaden Research Centre)

Presenter: Mr MACDONALD, Andrew (University of British Columbia) Session Classification: M3-4 Materials Characterization: Microscopy and Imaging (DCMMP) / Caractérisation des matériaux: microscopie et imagerie (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 243 2016 CAP Congr … / Report of Contributions Upconverting and Near-Infrared E …

Contribution ID: 1228 Type: Invited Speaker / Conférencier invité

Upconverting and Near-Infrared Emitting Nanoparticles: From Synthetic Strategies to Potential Applications Monday, 13 June 2016 10:30 (30 minutes)

Lanthanide-based nanostructures are well known for their outstanding optical properties that are based on the electronic configuration of the trivalent lanthanide ions (Ln3+), which is characterized by an incompletely filled 4f shell, located inside the complete 5s2 and 5p6 shells. Thisresults in a shielding of valence electrons, which are therefore only weakly affected by the environment. Consequently, when doped in appropriate host materials, the influence of the host lattice onthe optical transitions within the 4f configuration is small, and narrow optical absorption and emission bands as well as long lifetimes of the excited electronic states of the Ln3+ are obtained. Following a stepwise excitation with near-infrared (NIR, typically 980 nm) light, Ln3+-doped nanostructures show upconversion (ultraviolet, visible and NIR light) emission. In addition, NIR light of longer wavelengths (> 1000 nm) can be emitted under excitation with NIR light when appropriate Ln3+ dopants are chosen (e. g., Er3+ or Ho3+). Based on this, Ln3+-doped nanostructures have been suggested for a whole gamut of applications including the field of bioimaging and sensing. Flu- orides, such as NaGd4, NaYF4 or LiYF4, are commonly considered as suitable host materials and their preparation via the thermal decomposition process has been widely studied. Alternatively, oxides, such as Gd2O3 or Y2O3, have been suggested as host materials for Ln3+ ions resulting in upconverting and NIR emitting nanostructures. Ln3+-doped oxides of various sizes and shapes (nanoparticles, nanorods) can for instance be obtained by precipitation or solvothermal approaches. In this presentation, various synthetic strategies leading to upconverting and NIR emitting Ln3+- doped nanostructures will be discussed, and their application of the resultant materials in optical bioimaging and nanothermometry will be presented.

Primary author: Prof. HEMMER, Eva (University of Ottawa) Presenter: Prof. HEMMER, Eva (University of Ottawa) Session Classification: M1-2 Material Growth and Processing (DCMMP) / Croissance et traitement des matériaux (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 244 2016 CAP Congr … / Report of Contributions Ba-ion extraction and identificatio …

Contribution ID: 1229 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Ba-ion extraction and identification from high pressure Xenon gas for nEXO Monday, 13 June 2016 11:00 (15 minutes)

The Enriched Xenon Observatory (EXO) is searching for the lepton-number violating double beta decay (0νββ) in 136Xe. If experimentally confirmed, 0νββ will require the neutrino to be its own anti-particle, i.e. Majorana particle, and shed light on the neutrino-mass hierarchy. The currently running EXO-200 experiment uses 200 kg of Xenon enriched to more than 80% in 136Xe 0νββ × 25 and obtained the limit of T1/2 1.1 10 years. In parallel, the development of nEXO has started which will deploy 5 tonnes of liquid xenon in a time-projection chamber and is expected to probe the inverted mass hierarchy of neutrino. One of the design goals of nEXO is to unambiguously differentiate true double beta decay events from background contributions through Ba-tagging, i.e. by identifying the daughter isotope 136Ba of the 136Xe decay. With an efficient Ba-tagging technique, the backgrounds can be virtually elim- inated which dramatically increases the sensitivity of the 0νββ search. The nEXO collaboration is developing various Ba-tagging techniques for liquid and gas phase xenon.

A setup is being developed for Ba-tagging in xenon gas. Its central component is an RF-funnel to extract Ba-ions from high pressure xenon gas (up to 10 bar) to a vacuum environment. The second stage, a linear Paul trap, cools the ions through buffer gas cooling and bunches them into a multi- reflection time-of-flight mass spectrometer to identify the Ba-ion by precision mass spectrometry. The RF-funnel has been built and tested to extract ions from xenon gas of up to 10bar.Theliner Paul trap is currently under development. The Ba-tagging setup will be presented and future works will be discussed.

Primary author: LAN, Yang (TRIUMF/UBC) Co-authors: FUDENBERG, Daniel (Stanford University); GRATTA, Giorgio (Stanford University); DILLING, Jens (triumf/UBC); BRUNNER, Thomas (TRIUMF/McGill University); VARENTSOV, Victor (Institute for Theoretical and Experimental Physics, Moscow, Russia/Facility for Antiproton and Ion Research in Europe (FAIR GmbH), Darmstadt, Germany)

Presenter: LAN, Yang (TRIUMF/UBC) Session Classification: M1-4 Neutrinoless Double Beta Decay I (PPD-DNP-DTP) / Double désintégration beta sans neutrino I (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 245 2016 CAP Congr … / Report of Contributions Development of synchrotron- …

Contribution ID: 1230 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Development of synchrotron-based x-ray scatter projection imaging Tuesday, 14 June 2016 19:00 (2 minutes)

In medical x-ray imaging a major challenge is to obtain adequate soft tissue contrast. The goal of our research is to develop a high soft-tissue contrast x-ray technique based on the detection of low-angle scattered photons. Scattered photons comprise up to 90% of the radiation downstream of the patient and can provide information in addition to that of the transmitted primary x rays. In particular, the cross section for coherent x-ray scattering, the basis of x-ray diffraction, varies with angle and photon energy in a material-specific manner, even for amorphous materials, and thus it can provide good soft tissue contrast. At the photon energies of medical radiology coherent scatter is a minority of all photon interactions, but its forward nature at these energies makesit relatively easy to detect. For example, in abdominal radiography coherent single scatter is 10% of the total scatter and 26% of the primary fluence.

We are developing x-ray scatter imaging at the BioMedical Imaging & Therapy (BMIT) facility of the Canadian Light Source (CLS) synchrotron in Saskatoon, Canada. The BMIT facility provides an excellent development environment with the availability of monoenergetic x-ray beams, flat- panel x-ray imagers and automated sample positioning stages. The best images are obtained using step-and-shoot scanning with a pencil beam and area detector to capture sequentially the scatter pattern for each primary beam location on the sample. Primary x-ray transmission is recorded simultaneously using photodiodes. Our beam energy is 33.2 keV and the pencil beam area is about 2.5 mm². The technological challenge is to acquire the scatter data in areasonable time. Our aim is to acquire images on a time scale similar to that of nuclear medicine, e.g., under 15 minutes. Geometries using multiple pencil beams producing partially-overlapping scatter patterns reduce acquisition time but increase the complexity due to the need for a disentangling algorithm to extract the data. Continuous sample motion, rather than step-and-shoot, also reduces acquisition time at the expense of introducing motion blur and is the subject of our latest investigation. Our recent work with plastic phantoms and animal tissues is described.

Primary author: DYDULA, Christopher (Carleton University) Co-authors: BELEV, George (Canadian Light Source); JOHNS, Paul (Carleton University) Presenter: DYDULA, Christopher (Carleton University) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 246 2016 CAP Congr … / Report of Contributions The automation of the NRC ice loa …

Contribution ID: 1231 Type: Oral (Non-Student) / orale (non-étudiant)

The automation of the NRC ice load monitoring system at the Confederation Bridge Thursday, 16 June 2016 13:45 (15 minutes)

Since 1997 the National Research Council Canada has been monitoring ice loads on the Confeder- ation Bridge. It has proven a valuable research platform to examine full scale ice loading events on a sloped structure. Ice loading results from the bridge are still used today in order to validate numerical models which are used to optimize the designs of offshore platforms which could be subjected to ice loads. The ice load monitoring system is comprised of four tilt meters, twovideo cameras and an anemometer near the navigation span (centre) of the bridge. Historically, the calculation of ice loads on the bridge has been very labour intensive and requires a detailed analysis of the data from each of the 7 sources. This has limited the ice load analysis to extreme ice loading events.

Beginning in 2011 the NRC has been connecting the equipment to the internal power and communications network of the Confederation Bridge. By combining these new hardware upgrades with advances in computational power and image processing techniques the National Research Council now have all of the tools to develop a quasi-real-time ice load monitoring system. We will present an update of the current status of the ice load monitoring system and examine specific ice loading event which have occurred at the bridge.

Primary author: POIRIER, Louis (National Research Council Canada) Presenter: POIRIER, Louis (National Research Council Canada) Session Classification: R2-6 General Instrumentation II (DIMP) / Physique générale des instruments II (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 247 2016 CAP Congr … / Report of Contributions Custodial symmetry violation in t …

Contribution ID: 1232 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Custodial symmetry violation in the Georgi-Machacek model Wednesday, 15 June 2016 10:00 (15 minutes)

We study the effects of custodial symmetry violation in the most general scalar potential ofthe Georgi-Machacek model (GM). The GM model, which adds isospin triplet scalars to the Standard Model, preserves SU(2) custodial symmetry at tree level by imposing a global SU(2)L×SU(2)R symmetry and produces a degenerate fiveplet, a degenerate triplet and two singlet states. Cus- todial symmetry violation is induced by hypercharge gauge interactions when the model is run down to the weak scale from a higher scale at which the exact SU(2)L×SU(2)R global symmetry is imposed on the scalar potential. The magnitude of the running is heavily constrained bythe ρ parameter. The effect of this small custodial violating running is quantified using a linearized approximation to solve the renormalization group equations (RGE) of the custodial violating parameters while the RGE of the custodial preserving parameters is solved numerically. We compute the resulting custodial-violating mass splittings and mixings among the original states and study the consequences for the Higgs couplings to fermions and gauge bosons. Numerical scans over the allowable parameter space are also performed.

Primary author: KEESHAN, Ben (Carleton University) Co-authors: LOGAN, Heather (Carleton University); PILKINGTON, Terry (Carleton University)

Presenter: KEESHAN, Ben (Carleton University) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 248 2016 CAP Congr … / Report of Contributions Temperature-Dependent Band Str …

Contribution ID: 1233 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Temperature-Dependent Band Structure of LaAlO3/SrTiO3 Interfaces Wednesday, 15 June 2016 09:30 (15 minutes)

In recent years, the two dimensional electron gases (2DEG) that form at some oxide interfaces have attracted worldwide attention due to their fascinating properties suchas conductivity, superconductivity, and magnetic order. Here, we build a theoretical model for exploring the electronic properties of the 2DEG at LaAlO3/SrTiO3 interfaces considering the strong dependence of the dielectric constant of SrTiO3 on temperature, electric field, and wave vector. We model the SrTiO3 dielectric properties using Landau-Ginzburg theory for the polarization. By solving a set of self-consistent Hartree equations for the charge density and lattice displacement, we obtain the band structure and charge density profile for the SrTiO3 film at different temperatures and different doping. We find that the charge density is less confined to the interface at low temperatures andlowdoping.

Primary author: Mrs RASLAN, Amany (Trent University) Co-authors: Dr ATKINSON, Bill (Trent University); Mr LAFLEUR, Patrick (Trent University)

Presenter: Mrs RASLAN, Amany (Trent University) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 249 2016 CAP Congr … / Report of Contributions Transionospheric Radio Propagati …

Contribution ID: 1234 Type: Oral (Non-Student) / orale (non-étudiant)

Transionospheric Radio Propagation Research with CASSIOPE/ePOP Tuesday, 14 June 2016 08:30 (15 minutes)

The Radio Receiver Instrument (RRI) launched in 2013 as part ofthe Enhanced Polar Outflow Probe (ePOP) payload on the Canadian CASSIOPE small satellite has been successfully operated in a number collaborative transionospheric propagation experiments. The RRI is a digital receiver that operates in the frequency range from 10 Hz to 18 MHz and connects to 4 tubular monopoles usually configured as two orthogonal 6-m dipoles. CASSIOPE’s elliptical (325 km - 1500 km) high-inclination (81°) orbit has presented a variety of experimental opportunities in plasma-wave research. Experiments have featured the reception of EM signals from coordinated ground transmitters of various radiated powers inthe very-low-frequency to high-frequency range, including VLF communication transmitters, HF ionospheric heaters, HF over-the-horizon radars, HF coherent-backscatter radars, ionosondes and amateur radio sources. In many cases, the distortion of signals in transionospheric propagation observed by the RRI inside the ionosphere may be used to test long-held interpretive assumptions about propagation that normally is only observed when reflected or scattered back to the ground. Special interest arises with radio propagation detected at low altitudes near perigee at 325 km altitude, a height range rarely visited by orbital observatories. The RRI is also used to detect the results of plasma instabilities that occur in different locations in the ionosphere-magnetosphere system and give rise to EM radiation seen on the ground. In many cases, the RRI measurements are part of collaborative studies exploiting other field and particle instruments on the ePOP payload .

Primary author: Dr JAMES, Gordon (University of Calgary) Co-author: Dr PERRY, Gareth (University of Calgary) Presenter: Dr JAMES, Gordon (University of Calgary) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 250 2016 CAP Congr … / Report of Contributions Simultaneous Measurement of Ref …

Contribution ID: 1235 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Simultaneous Measurement of Refractive Index and Thickness of Multi Layer Systems Using Fourier Domain Optical Coherence Tomography Thursday, 16 June 2016 13:15 (15 minutes)

Purpose: To develop and validate a methodology for the simultaneous extraction of index of refraction, n(r), and physical dimension, t(r), profiles from the Spectral OCT data of multi-layered systems without any prior knowledge of the system under test. Method: We first develop a theoretical framework for the simultaneous extraction of index ofre- fraction and thickness. We then use the Transfer Matrix Method (TMM) to simulate Spectral OCT signals for a range of multi-layered systems simulating biological system to validate the methodology and quantify its potential accuracy. Results: Our theoretical framework combines the traditional optical path information and raw spectral response information to generate a set of linearly independent equations that can be solved for the sample’s indices and thicknesses and the rear medium index of refraction assuming that the front medium index of refraction is known. The accuracy of the extracted parameters depends on the sample’s index contrast and is insensitive to the sample’s thickness profile. We have used this methodology for two and three layers systems immersed in aqueous medium. For biological applications we can extract the indices within the error range of ±0.001 when the layers indices are <1.55.

Conclusions: We have developed the first methodology for extracting both physical dimension and index of refraction profiles of biologically relevant multi-layered systems without using any additional outside measurements.

Primary author: RAJAI, Payman (university of Ottawa) Co-authors: Dr SCHRIEMER, Henry (University of Ottawa); Dr MUNGER, Rejean (University of Ottawa)

Presenter: RAJAI, Payman (university of Ottawa) Session Classification: R2-4 Biophotonics (DPMB-DAMOPC) / Biophotonique (DPMB-DPAMPC)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 251 2016 CAP Congr … / Report of Contributions Optimization of a methodology to …

Contribution ID: 1236 Type: Oral (Non-Student) / orale (non-étudiant)

Optimization of a methodology to determine 90Sr in biota and water samples by ICP MS QQQ and LSC Tuesday, 14 June 2016 08:45 (15 minutes)

90Sr (t1/2 = 28.80yr) has a relatively long life and due to its chemical similarity to calcium, 90Sr accumulates within the skeletal structure of animals and some plants. The aim of this work is optimize a methodology to determine stable Sr and 90Sr in environmental samples including plants, insects, animals and water. The 88Sr was measured by ICP-MS Triple Quad (8800, Agilent Tech- nologies) and 90Sr by Liquid Scintillation Spectrometer (Quantalus 1220, Perkin Elmer). TheSr was separated from the matrix using the specific Sr EiChrom single resin method (Horwitz 1992). We modified this method to improve the yield and reproducibility of the results. Our optimization focused on adjusting the nitric acid concentration in samples, (8mol L-1) and the use of higher concentrations of hydrochloric acid (6mol L-1) to successfully elute the Sr from the resin. The proposed optimization showed that it is possible to obtain Sr recovery of about 92% if 6 mol L-1 HCl is used as an elution solution.

Horwitz, E. P. C. R. D. M. L. (1992). “A Novel Stronium-Selective Extraction Chromatographic Resin.” Solvent Extration and Ion Exchange 210(2): 313-336.

Primary author: FRANCISCO, Barbara (University of Ottawa) Co-authors: CHARLES, Christopher (University of Ottawa); MACDONALD, Cole (University of Ottawa); ROWAN, David (Environment Technologies Branch); CORNETT, Jack (University of Ot- tawa); KAZI, Zakir (University of Ottawa) Presenter: FRANCISCO, Barbara (University of Ottawa) Session Classification: T1-7 Mass spectrometry in nuclear waste management and control at the border (DIAP-DIMP) / Spectrométrie de masse dans la gestion des déchets nucléaires et surveillance à la frontière (DPIA-DPIM)

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 252 2016 CAP Congr … / Report of Contributions Vortex formation in spin-orbit cou …

Contribution ID: 1237 Type: Oral (Non-Student) / orale (non-étudiant)

Vortex formation in spin-orbit coupled Bose-Einstein condensates Wednesday, 15 June 2016 16:15 (15 minutes)

Using techniques that exploit the high precision atomic physics, we have exquisite control over several degrees of freedom in an ultracold atomic system, with which we can create analogues to a broader class of physical systems through the principle of quantum simulation. Raman transitions give us the ability to effect a “spin-orbit coupling” in our ultracold gas, by facilitating the transfer of momentum to the atoms from light in a controlled way. In this system, vortices may arise when the spin-orbit coupling is designed with a spatial dependence that simulates a magnetic field in one direction for one spin, and the opposite direction for another. With numerical tools, we investigate the formation and interaction of vortices created in such as system as a means of probing the superfluidity of the spin-orbit coupled sample. Finally, we discuss our experimental progress in realizing such a system.

Primary author: LEBLANC, Lindsay (University of Alberta) Co-authors: TRETIAKOV, Andrei (University of Alberta); RASTOGI, Anindya (University of Al- berta); Dr SAGLAMYUREK, Erhan (University of Alberta); HRUSHEVSKYI, Taras (University of Al- berta)

Presenter: LEBLANC, Lindsay (University of Alberta) Session Classification: W3-6 Cold and Trapped Atoms, Molecules and Ions (DAMOPC) / Atomes, molécules et ions froids et piégés (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 253 2016 CAP Congr … / Report of Contributions Intermediate near detector NuPRIS …

Contribution ID: 1238 Type: Oral (Non-Student) / orale (non-étudiant)

Intermediate near detector NuPRISM for T2K extension and HyperK Wednesday, 15 June 2016 14:15 (15 minutes)

CP violation in the lepton sector is the next major milestone in neutrino physics. Recent T2K and NOvA results show some preference for a large CP violation. In the next several years, the statistical sensitivity will start to reach the sensitive region if the systematic uncertainties are suppressed down to a few percent level, in particular for nuclear uncertainties in the neutrino cross sections. NuPRISM is a proposed water Cherenkov detector as a T2K and Hyper-K intermediate near detector. It locates at around 1km from the production target, covering off-axis angles of 1-4 degrees which provides ranges of well predicted neutrino spectra at each off-axis positions. By taking a linear combination of neutrino interaction events at different off-axis positions, neutrino cross sections, including lepton kinematics, in the water Cherenkov detector can be measured for a given neutrino energy spectrum, e.g. monochromatic neutrino spectrum. NuPRISM thus provides an elegant solution to experimentally constrain the systematic uncertainties of neutrino cross sections for the CP violation measurement. NuPRISM can also measure neutron tagging efficiencies for atmospheric neutrino interactions in the coming Gd loaded phase of Super-K(SK- Gd), which would suppress backgrounds for proton decay search and enable anti-neutrino tagging for atmospheric neutrino oscillation studies. NuPRISM is also sensitive to the LSND/MiniBooNE sterile neutrino oscillation with an additional information of varying neutrino energy spectrum to test oscillation hypotheses. An overview and status of NuPRISM will be presented in this talk.

Primary authors: KONAKA, Akira (TRIUMF); SCOTT, Mark (TRIUMF) Presenter: SCOTT, Mark (TRIUMF) Session Classification: W2-4 Neutrino Physics (PPD-DNP-DTP) / Physique des neutrinos (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 254 2016 CAP Congr … / Report of Contributions Adsorption d’hydrogène dans des …

Contribution ID: 1239 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Adsorption d’hydrogène dans des adsorbants microporeux : Étude numérique des propriétés thermodynamiques Wednesday, 15 June 2016 14:00 (15 minutes)

En raison de sa faible densité ambiante, le stockage de l’hydrogène à l’état pur (comme dans l’état gaz ou liquide) nécessite des conditions thermodynamiques difficiles. Le stockage d’hydrogène basé sur les matériaux constitue un moyen efficace de réduire les exigences thermodynamiques afin d’atteindre des densités de stockage importantes pour les systèmes énergétiques. Par exemple,la physisorption d’hydrogène sur des adsorbants fortement microporeux a été largement étudiée pour les applications de véhicules. Puisque les adsorbants courants donnent des résultats d’adsorption intéressants seulement à température cryogénique (~100 K) et que les processus d’adsorption peu- vent causer des changements thermiques significatifs, la modélisation de système de stockage basé sur l’adsorption nécessite la connaissance des équations d’états du phénomène d’adsorption sur une grande plage de conditions thermodynamique. La simulation informatique de la physique statistique basée sur la méthode Monte Carlo permet de calculer les isothermes d’adsorption pour un adsorbant cristallin idéal dont les paramètres des interactions adsorbat-adsorbant sont correctement paramétrés. En raison de leur surface accessible élevée, de leur forte microporosité et de leurs propriétés poreuses modulables, les structures métallo-organique ont été largement étudiées comme matériaux pour le stockage d’hydrogène par cryosorption. Dans ce travail, nous examinons la limite de densité des isothermes d’adsorption de l’hydrogène sur le MOF-5 et le CuBTC afin de guider les critères nécessaires à l’optimisation du stockage par physisorption. Différentes propriétés physiques et thermodynamiques de ces adsorbants sont étudiées comme le volume poreux, la surface spécifique, les fonctions de distributions radiales, les sites d’adsorptions et les isothermes d’adsorptions et de densité à l’intérieur des pores de l’adsorbant. Les propriétés thermodynamiques sont calculées en utilisant des simulations Grand Canonique Monte Carlo basées sur les intégrales de parcours pour la plage de pression 0-150 atm dans les états sous-critiques et super-critiques à 30, 50, 77, 113, 196 et 296 K.

Primary author: Mr DURETTE, David (UQTR) Co-author: Dr BÉNARD, Pierre (UQTR) Presenter: Mr DURETTE, David (UQTR) Session Classification: W2-5 Thin Films II (DCMMP-DSS) / Couches minces II (DPMCM- DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 255 2016 CAP Congr … / Report of Contributions OpenPhys: a Responsive Website …

Contribution ID: 1240 Type: Oral (Non-Student) / orale (non-étudiant)

OpenPhys: a Responsive Website Platform for Interactive Physics Education Thursday, 16 June 2016 08:30 (15 minutes)

We have developed an open source web-based platform (‘OpenMap’) and website (‘OpenPhys’) to present interactive self-guided multi-level learning resources. Content is designed for viewing on any device (phone, tablet, laptop) using mobile web technologies. OpenMap Format: The OpenMap format is crudely: ‘a 2D interactive PowerPoint for theweb’. Content is organized as a series of lessons (or ‘learning objects’). Each lesson consists of a 2D concept map and a set of content pages. The clickable map shows the 2D arrangement ofthe content pages, which may contain any combination of text, images, animations etc. The learner can navigate between pages by arrow key or swipe, or may return to the map for overview. Pages are arranged left-to-right as a progression through lesson topics, and up/down to present topics at a gradation of difficulty levels. A key objective of this design is to allow learners to progress through lessons at their own level. This multipath approach is a key advantage of a digital medium, and is well suited to self-guided study. The 2D map grid encourages authors to convey the logical structure of the lesson by design of the map shape. The platform is adaptable to any type of material. All the development tools, packages and developed software are open source. The software uses standard web technologies (HTML5, CSS, Javascript, CreateJS) with no plug-ins or downloads required.

OpenPhys Radiation Physics Site: The first OpenMap site is ‘OpenPhys’. This makes use oftext, images, graphics, equations and interactive animations to present a series of radiation physics concepts. Web software and device graphic display capabilities have advanced sufficiently thatquite complex simulations are feasible on the mobile web platform. In atomic and nuclear physics, many key physical processes, such as radioactivity and X-ray interactions, are invisible and physically hazardous, rendering hands-on experimental interaction difficult, and interactive simulations particularly useful. The OpenPhys website currently contains lessons such as: The electronic structure of the atom, Radioactivity; Compton X-ray Scattering, and the Photo-electric effect. The OpenPhys website is available at: https://openphys.med.ualberta.ca/ . Source code and documentation is at: https://github.com/OpenPhysProject/OpenPhys.

Primary authors: Ms DAI, Anni (University of Alberta); Dr SHARP, Jonathan (University of Alberta)

Co-authors: Mr ROBINSON, O’Jay (University of Alberta); Mr VON HAUFF, Patrick (University of Alberta)

Presenter: Dr SHARP, Jonathan (University of Alberta) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 256 2016 CAP Congr … / Report of Contributions Studying the Lower Thermosphere …

Contribution ID: 1241 Type: Invited Speaker / Conférencier invité

Studying the Lower Thermosphere with Alberta’s First Cube Satellite: Ex-Alta 1 Tuesday, 14 June 2016 13:15 (30 minutes)

Ex-Alta 1 is the pioneer cube satellite for the AlbertaSat team at the University of Alberta and will be the first built-in-Alberta satellite. This 3U cube satellite is designed and assembled primarily by volunteer undergraduate students at the U of A, with guidance from several researchers and faculty members. In this way, AlbertaSat offers a unique opportunity to train highly qualified personnel for eventual careers in aerospace. Ex-Alta 1 is one of two Canadian satellites participating in the QB50 mission coordinated by the Von Karman Institute in Brussels, Belgium. It will be deployed from the International Space Station in the autumn of 2016. Thus, its initial orbit will be at an altitude of 400 km and inclination of52°. Once in orbit, Ex-Alta 1 will study space weather, using a range of scientific instruments, and will act as a qualification opportunity for the first model of a new suite of open source cube satellite subsystems being developed at the University of Alberta. Ex-Alta 1 is equipped with three scientific payloads. The multi-Needle Langmuir Probe (mNLP) experiment, developed at the University of Oslo, will study variations in ion densities. These measurements can be used to better quantify how the Earth’s atmosphere expands and contracts into low Earth orbit. The mNLP will also enable the collection of information to study theeffects of re-entry. A Digital Fluxgate Magnetometer (DFGM) developed and built at the U of A will be deployed at the end of a 60 cm boom and will study the Earth’s magnetic field in low Earth orbit. Finally, a radiation dosimeter onboard Ex-Alta 1 will measure variation in radiation levels in low Earth orbit, thus giving insight into average electron and proton flux during the mission. Data generated by Ex-Alta 1 will be curated by teams at the University of Alberta and the Von Karman institute and made available to the scientific community.

Ex-Alta 1 will also include the Athena on-board computer. This on-board computer for cube satellites is a fully open source system designed and built by senior undergraduate students at the University of Alberta. It will be tested and qualified on the Ex-Alta 1 mission, and will then form the foundation for future cube satellite projects carried out by the AlbertaSat team.

Primary author: Mr NOKES, Charles D. A. (University of Alberta) Co-authors: Mr HAMILTON, Alexander D. (University of Alberta); Mr BRUNER, Brendan (Univer- sity of Alberta); Dr LANGE, Carlos F. (University of Alberta); Mr ROBSON, Christopher (University of Alberta); Mr CUPIDO, Collin (University of Alberta); Dr SAMEOTO, Dan (University of Alberta); Mr BARONA, David (University of Alberta); Mr MILES, David M. (University of Alberta); Dr ELLIOTT, Duncan G. (University of Alberta); Dr MANN, Ian R. (University of Alberta); Mr GREY, John P. (Uni- versity of Alberta); Prof. WYARD-SCOTT, Loren (University of Alberta); Mr ROBERTSON, Matthew T. (University of Alberta); Dr FLEISCHAUER, Michael D. (National Institute for Nanotechnology); Ms FERRARI, Ruth (University of Alberta); Mr DAMKJAR, Stefan (University of Alberta); ALBERTASAT, Team (University of Alberta); Mr HRYNYK, Tyler (University of Alberta) Presenter: Mr NOKES, Charles D. A. (University of Alberta) Session Classification: T2-4 Ground-based and In Situ Observations II (DASP) / Observa- tions sur terre et in situ II (DPAE)

September 29, 2021 Page 257 2016 CAP Congr … / Report of Contributions Studying the Lower Thermosphere …

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 258 2016 CAP Congr … / Report of Contributions Impurity-based Quantum Circuits …

Contribution ID: 1242 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Impurity-based Quantum Circuits in Si Tuesday, 14 June 2016 09:45 (15 minutes)

Recent advances in manipulation of impurities in Silicon by STM techniques, both dangling bonds on Si surface [1] and dopant atoms in Si [2], enable the realization of atomic scale circuits in Si. In this work we focus on phosphorus (P) donors in Si [3]. The 6-fold degenerate conduction band of Si combined with valley-orbit coupling results in a manifold of 6 states of a single P donor. We describe a quantum circuit of P atoms in Silicon with electron population controlled by external gate in analogy to gated quantum dots in GaAs [4]. The electronic properties of these atomic scale quantum dot circuits (QDC), including intra- and inter donor exchange, are described by an extended Hubbard-Kanamori Hamiltonian (HK). The HK parameters show strong dependence on the position of substitutional donors in the Si lattice including on site Coulomb repulsion (U), interdot hopping (t), direct interaction (V) and exchange (J) terms. The interdot, t, V and J, terms strongly depend on dopant position (R_D) in Si lattice—small changes in R_D strongly impact these parameters. We study the influence of QDC design, chains and rings, and how disorder inR_D impacts QDC electronic properties, in particular the interplay of disorder and interactions. With no disorder in R_D the energy spectrum (ES) of quantum dot chain at half-filling as a function of U/t (V,J =0) shows a transition from spectrum dominated by kinetic energy (U/t≪1) to ES dominated by Coulomb interactions for U/t≫1. For weak (strong) interactions the excited states group by single particle energy spacing (Hubbard bands). In the noninteracting regime, disorder leads to electron localization. Using Lanczos and Density Matrix Renormalization Group approaches we explore the effect of interactions and disorder on atomic scale circuits in Si and potential many- body localized phases in the HK model [5]. References [1] M. B. Haider et al. Phys. Rev. Lett. 102 (2009). [2] B. Weber et al. Science 335, 64 (2012). F.A. Zwanenburg et al. Rev. Mod. Phys. 85, 961 (2013). [3] A. L. Saraiva et al, Journal of Physics: Condensed Matter 27, 154208 (2015). [4] C-Y. Hsieh et al, Rep. Prog. Phys. 75, 114501 (2012). [5] D.M. Basko et al. Annals of Physics 321, 1126–1205 (2006). R. Nandkishore and David A. Huse. Annu. Rev. Condens. Matter Phys. 6:15–38 (2015). M. Schreiber et al. Science 21 August 2015: 842-845.

Primary author: Mr DO AMARAL OLIVEIRA, Amintor Dusko (University of Ottawa) Co-authors: Dr DELGADO, Alain (University of Ottawa); Dr SARAIVA, André (Universidade Fed- eral do Rio de Janeiro); Dr KOILLER, Belita (Universidade Federal do Rio de Janeiro); Dr KORKUSINSKI, Marek (National Research Council); Dr HAWRYLAK, Pawel (University of Ottawa) Presenter: Mr DO AMARAL OLIVEIRA, Amintor Dusko (University of Ottawa) Session Classification: T1-3 Materials Characterization: Electrical, Optical, Magnetic, Ther- mal (DCMMP) / Caractérisation des matériaux: électrique, optique, magnétique et thermique (DPMCM)

September 29, 2021 Page 259 2016 CAP Congr … / Report of Contributions Impurity-based Quantum Circuits …

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 260 2016 CAP Congr … / Report of Contributions Indirect internuclear coupling in t …

Contribution ID: 1243 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Indirect internuclear coupling in topological insulator Bi2Se3 Tuesday, 14 June 2016 19:20 (2 minutes)

Topological insulators constitute a new class of material with an energy gap in the bulk and unusual metallic states on the surface. To date, most experiments have focused on probing the surface properties of these materials and suppressing the often inevitable contribution from bulk states. However, the bulk states in topological materials are of interest on their own and contain useful information that can be extracted with a local probe like nuclear magnetic resonance (NMR). Recently, 77Se NMR experiments on Bi2Se3 single crystals have reported unusual field-independent linewidths and short spin-echo decays [1]. It is likely that an unexpectedly strong indirect internuclear coupling, characteristic of inverted band structures in topological materials, is the probable cause of these peculiar results. The main objective of our research project is to provide a theory that explains the experiment of Ref. [1]. Starting from a microscopic tight-binding model for Bi2Se3, we calculate the Ruderman- Kittel-Kasuya-Yoshida (RKKY) and Bloembergen-Rowland (BR) couplings between nuclear spins, as well as the T1 relaxation time. We will compare our results to the experimentally available data.

[1] N. Georgieva, D. Rybicki, R. Guhne, G. Williams, S. Chong, I. Garate and J. Haase (arXiv: 1511.01727; manuscript submitted).

Primary author: GARATE, Ion (U) Co-author: GAUVIN-NDIAYE, Chloé (Université de Sherbrooke) Presenter: GAUVIN-NDIAYE, Chloé (Université de Sherbrooke) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 261 2016 CAP Congr … / Report of Contributions Measurement of Fissiogenic Cs Ra …

Contribution ID: 1244 Type: Oral (Non-Student) / orale (non-étudiant)

Measurement of Fissiogenic Cs Radioisotopes in Seawater by QQQ-ICPMS: Progress Report Thursday, 16 June 2016 09:00 (15 minutes)

The anthropogenic radioisotope, Cs-137, is routinely used in oceanographic studies and themoni- toring of radioactive contamination. Currently, this isotope is measured radiometrically by observing its characteristic 662 keV gamma emission. In low concentrations, however, this method of measurement can take days per sample. Recently there has been much interest in the measurement of this isotope by mass spectrometry, specifically, inductively coupled plasma mass spectrometry (ICPMS). Currently, the efficiency and limit of detection of these isotopes limit measurements tosoilsam- ples which have relatively high concentrations of the isotopes of interest (>100 mBq/g). Seawater samples, however, have a much lower concentration (<1 mBq/g) and have yet to be measured by ICPMS. Therefore, the development of a method for Cs measurement by mass spectrometry would result in much higher sample throughput and more precise measurements. The primary challenge in achieving this measurement is the isobaric interference from Ba isotopes (135 amu and 137 amu) which cannot be distinguished from the Cs radioisotopes by mass spectrometry. The “Agilent 8800” is an ICPMS with two quadrupole mass analyzers and one on-line octupole reaction cell located between the mass analyzers. The on-line reaction cell exploits the chemical nature of isobars, such as Ba, so the interference can be reduced during the measurements. This instrumentation has been used to successfully quantify Cs-135 and Cs-137 in samples with high concentrations of the radionuclides.

Here we outline the developments made towards low concentration ICPMS Cs radioisotope measurements including sea water cleanup chemistry, measurement methods, and isobaric removal using the online reaction cell.

Primary author: MACDONALD, Cole (University of Ottawa) Co-authors: Dr CORNETT, Jack (Faculty of Earth Sciences, University of Ottawa); Dr DE SILVA, Nimal (Faculty of Earth Sciences, University of Ottawa); Dr KAZI, Zakir (Faculty of Earth Sciences, University of Ottawa)

Presenter: MACDONALD, Cole (University of Ottawa) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 262 2016 CAP Congr … / Report of Contributions Multi-modality Bone Mineral Den …

Contribution ID: 1245 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Multi-modality Bone Mineral Density Measurements in the Presence of Bone Seeking Elements Accumulated in Bone Tuesday, 14 June 2016 19:02 (2 minutes)

Dual-energy X-ray Absorptiometry (DXA) is currently the “gold standard” for measuring bone mineral density (BMD). Due to dependency of DXA on the atomic composition of bone, deposition of bone seeking elements that differ in atomic numbers from calcium (Ca, Z=20) can cause inaccurate estimation of BMD. One of the most notable elements of concern is strontium (Sr, Z=38), which is used to treat osteoporosis in the form of strontium ranelate. Because the atomic number of Sr is higher than that of Ca, Sr has higher attenuation coefficients than Ca for the photon energy range relevant to DXA. Therefore the BMD value of Sr can be overestimated. Other elements of interests are lead (Pb, Z=82) that accumulates in bone due to chronic occupational exposure or poisoning, and aluminum (Al, Z=13) which accumulates in human bone due to dialysis or adminis- tration of aluminum-containing medications. Although the accumulation of these elements occurs in relatively small concentrations, it is known to have adverse effects on bone health. Because Pb has higher atomic number and Al has lower atomic number in comparison to Ca, overestimation of BMD due to Pb and underestimation of BMD due to Al are of potential concern. Quantitative Ultrasound (QUS) offers an alternative method of assessing bone health bymeasur- ing speed of sound (SOS), broadband ultrasound attenuation (BUA), and a derived quantity called the stiffness index (SI). Because QUS depends on the macroscopic acoustic properties andisnot influenced by the microscopic changes in the atomic composition of bone, we are hypothesizing that the QUS should not be subjected to inaccurate estimation of the BMD measurement in the presence of these bone seeking elements.

In this study, hydroxyapatite that mimics bone mineral was synthesized with partial substitution of calcium with individual bone mimicking element (Sr, Pb and Al). The synthesized minerals were mixed homogeneously with gelatin to produce trabecular bone-mimicking phantoms that are compatible with both BUA and QUS, with volumetric BMD of 200 mg/cm3 and varying analyte concentrations. The phantoms were then measured with a Hologic Discovery® DXA system,a Hologic Sahara® QUS system and an in-house research QUS system. The relationship between the concentration of the bone seeking elements and BMD as assessed by each modality will be presented.

Primary author: Mr JANG, Deok Hyun (Department of Physics, Ryerson University, Toronto, Ontario, Canada)

Co-authors: Dr PEJOVIĆ-MILIĆ, Ana (Department of Physics, Ryerson University, Toronto, On- tario, Canada); Dr CHEUNG, Angela M. (University of Toronto, Centre of Excellence in Skeletal Health Assessment, Toronto, Ontario, Canada); Mr DA SILVA, Eric (Department of Physics, Ryerson Uni- versity, Toronto, Ontario, Canada); Dr TAVAKKOLI, Jahan (Department of Physics, Ryerson Univer- sity, Toronto, Ontario, Canada / Institute for Biomedical Engineering, Science and Technology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, Canada); Dr SLATKOVSKA, Luba (University of Toronto, Centre of Excellence in Skeletal Health Assessment, Toronto, Ontario, Canada)

September 29, 2021 Page 263 2016 CAP Congr … / Report of Contributions Multi-modality Bone Mineral Den …

Presenter: Mr JANG, Deok Hyun (Department of Physics, Ryerson University, Toronto, Ontario, Canada) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 264 2016 CAP Congr … / Report of Contributions Using the motion of Pulsating Aur …

Contribution ID: 1246 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Using the motion of Pulsating Aurora Patches to investigate the change in magnetospheric convection Tuesday, 14 June 2016 14:30 (15 minutes)

Magnetospheric convection, the main process of the acceleration and injection of energetic particles into the magnetosphere, plays an important role in the study of Earth’s magnetosphere. One of our previous studies has compared the motion of Patchy Pulsating Aurora (PPA) patches with the corresponding ionospheric convection inferred from the SuperDARN radar measurements. The result shows that the motion of the PPA patches follows the convection and suggests that the motion of PPA patches could be a great new tool to remote sense the magnetospheric convection with high temporal and spatial resolution. We later have compared the patch velocities with the corresponding magnetospheric convection velocities inferred from the electric field measurements from RBSP. Although the result shows a great consistency between these two velocities, with small values of electric field measurements there might be a great uncertainty introduced into the derivation of convection velocities. In this study, we look into the PPA events with changing velocities and compare their variations with the changes of the corresponding electric field measurements from RBSP. The result not only can show us whether the motion of PPA patches follows the magnetospheric convection but also suggest the variation in convection is due to the change in large-scale or small-scale electric field.

Primary author: YANG, Bing (University of Calgary) Co-authors: Dr SPANSWICK, Emma (University of Calgary); Prof. DONOVAN, Eric (University of Calgary); Mr GRONO, Eric (University of Calgary); Dr LIANG, Jun (University of Calgary) Presenter: YANG, Bing (University of Calgary) Session Classification: T2-4 Ground-based and In Situ Observations II (DASP) / Observa- tions sur terre et in situ II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 265 2016 CAP Congr … / Report of Contributions Energy-cascaded Upconversion Na …

Contribution ID: 1247 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Energy-cascaded Upconversion Nanoparticles for 800 nm Activated Photodynamic Therapy Wednesday, 15 June 2016 09:30 (15 minutes)

Photodynamic therapy (PDT) is emerging as a novel clinical approach that uses light (including laser sources) and photoactivatable compounds (photosensitizers) for the treatment of various tumors and other non-malignant conditions. PDT has potential advantages over surgery and other therapies, being minimally invasive, with accurate targeting and few side effects. However, most clinical PDT agents are activated at wavelengths of 630-690 nm, at which the tissue penetration and effective depth of treatment are limited. Hence, one focus of current PDT research is todevelop compounds sensitive to light at near-infrared (NIR) wavelengths. Upconversion nanoparticles (UC- NPs) have been extensively explored for NIR-activated PDT due to their large anti-Stokes shifts, excellent bio-compatibility and photochemical stability. In order to overcome the heat effect from 980 nm excitation lasers in conventional UCNP-based PDT, we developed an energy-cascaded upconversion nanoplatform excited with 800 nm continuous lasers for PDT. NaYF4:Yb,Er,Nd@NaYF4:Nd core-shell nanoparticles were coupled with carboxylic acid-functionalized IR780 and rose bengal via direct electrostatic interactions and exhibited a large production of cytotoxic singlet oxygen under 800 nm laser excitation. Due to a close contact between each component, high energy transfer efficiencies of the energy-cascaded pathway (dye → upconversion nanoparticles→rose bengal) were achieved. With antenna effects contributed by near-infrared dyes attached to the nanoparticle surface, the photon harvesting ability of the UCNPs were dramatically improved (∼ 30-fold) with low excitation power density being required for singlet oxygen production. Our nanoplatform has potential to achieve 800 nm laser-activated photodynamic therapy for treatment of challenging deep tumors.

Primary authors: Prof. HONEK, John (Department of Chemistry, University of Waterloo); Prof. LU, Qing-bin (Department of Physics and Astronomy, University of Waterloo); Mr HU, Yang (Department of Chemistry, University of Waterloo)

Presenter: Mr HU, Yang (Department of Chemistry, University of Waterloo) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 266 2016 CAP Congr … / Report of Contributions Study the collectivity and electrom …

Contribution ID: 1248 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Study the collectivity and electromagnetic emissivity in a small quark-gluon droplet Tuesday, 14 June 2016 17:15 (15 minutes)

Signatures associated with collective behaviour has been observed in the hadronic measurements of high multiplicity proton+lead collisions at the Large Hadron Collider (LHC), as well as in (proton, deuteron, helium-3)+gold collisions at the Relativistic Heavy-Ion Collider (RHIC). To better understand the evolution dynamics and the strongly-coupled properties of the matter created in these small systems, we present a systematic study of the hadronic observables as well as electromagnetic radiation from these collisions using a hydrodynamic framework. The validity of the hydrodynamic description is quantified using the Knudsen and the inverse Reynold’s numbers. Quantitative agreement is found between theoretical calculations and existing experimental measurements. Predictions of higher order anisotropic flow coefficients, Hanbury Brown and Twiss (HBT) radii, and signals of thermal photon enhancement are proposed. They can serve as additional signatures to hunt for the existence of a hot quark-gluon plasma (QGP) during the evolution of these small collision systems. Quantitative comparisons with future experimental measurements can further constrain the extraction of the transport properties of the QGP.

Primary author: Dr SHEN, Chun (McGill University) Co-authors: Prof. GALE, Charles (McGill University); DENICOL, Gabriel (McGill University); PA- QUET, Jean-Francois (McGill University); JEON, Sangyong (McGill University) Presenter: Dr SHEN, Chun (McGill University) Session Classification: T3-1 Hadronic Structure (DNP) / Structure hadronique (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 267 2016 CAP Congr … / Report of Contributions CDMSlite Run 2 Results

Contribution ID: 1249 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

CDMSlite Run 2 Results Tuesday, 14 June 2016 13:45 (15 minutes)

SuperCDMS searches for dark matter in the form of Weakly Interacting Massive Particles (WIMPs) using germanium detectors operated at a few tens of mK. Particles are detected via the change in resistance of a superconducting transition edge sensor heated by lattice vibrations (phonons) from the interaction. A bias voltage applied across the detector drifts electron-hole pairs produced in an interaction to the electrodes, producing additional phonons (Neganov-Luke effect). The CDMS low ionization threshold experiment (CDMSlite) applies a higher voltage than is normal for these detectors leading to a phonon signal which is strongly dominated by the Neganov-Luke phonons. Through this effect, a much lower energy threshold can be achieved than at lower voltages. Here, we present the results of the second run of CDMSlite which operated at 70 V for 70 kg days and reached a threshold for electron recoils as low of 56 eV. Improvements to the operation of the experiment and the analysis, particularly a fiducial volume cut, allowed for great improvement upon the results from the first CDMSlite run. The fiducial cut is needed because the electric field of this high voltage is distorted at the edges of the detector leading to a reduced Luke amplification at high radius, i.e higher energy backgrounds in this part of the detector fall into the low energy region used for WIMP search. A radial fiducialization based on a new pulse fitting algorithm was applied to drastically reduce this background. New parameter space for the spin-independent WIMP-nucleon cross section is probed for WIMPs with mass between 1.6 and 5.5 GeV/c2.

Primary author: Mr UNDERWOOD, Ryan (Queen’s University) Presenter: Mr UNDERWOOD, Ryan (Queen’s University) Session Classification: T2-3 Cosmic Frontier: Dark Matter II (PPD) / Frontière cosmique: matière sombre II (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 268 2016 CAP Congr … / Report of Contributions Semiconductor nanocrystals as det …

Contribution ID: 1250 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Semiconductor nanocrystals as detector of ionizing radiation in liquid scintillation counting Wednesday, 15 June 2016 09:45 (15 minutes)

The understanding of the health impact of low dose exposition to ionizing radiation isoneofthe scientific challenges of this century. To insure a proper assessment of the exposition toradioac- tivity, different methods of detection have been investigated. One of the most common detection methods is liquid scintillation counting, which convert the radiation energy into a light signal with the use of fluorophores. In our study, semiconductors nanocrystals (NCs) were optimized to detect ionizing radiation through liquid scintillation counting.[1] Few experiments have been reported on the detection of actinides with NCs and they were performed exclusively with nanocomposite materials embedding NCs.[2,3] Because radionuclides standards are mostly available in acidic matrices and NCs are not stable in this condition, the elaboration of a scintillation cocktail was explored to validate the potential of NCs as scintillators. In a commercial scintillation cocktail, the addition of acidic water will quench part of the organic fluorophore but in the case of NCs there is a total dissolution of the fluorophore. Therefore, the acidic standard must be neutralized before it is added to the scintillation cocktail and the latter must be stable with the addition of this neutralized standard. This contribution highlights our recent progress concerning the optimization of the scintillation cocktail and the counting efficiency with different radionuclide and NCs.

Primary author: Ms LECAVALIER, Marie-Eve (Chemistry department, Laval university) Co-authors: Prof. ALLEN, Claudine (COPL, Physics department, Laval University); Prof. LARIV- IERE, Dominic (Chemistry Department, Laval University)

Presenter: Ms LECAVALIER, Marie-Eve (Chemistry department, Laval university) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 269 2016 CAP Congr … / Report of Contributions Modeling the high frequency elect …

Contribution ID: 1251 Type: Oral (Non-Student) / orale (non-étudiant)

Modeling the high frequency electric organ discharge in the weakly electric fish, Eigenmannia Tuesday, 14 June 2016 14:15 (15 minutes)

In the murky waters of the tropics, live weakly electric fish which use a continuous high frequency electric organ discharge (EOD) to sense nearby objects and communicate with conspecifics. Eigen- mannia’s characteristic frequency is within the species range of 250 to 600 Hz which it shifts when necessary to avoid jamming. The nearly dipolar oscillating electric field is generated by parallel columns of identical, synchronously discharging electrocyte cells. Recent findings from whole fish respirometry (during high-frequency signaling over a range of frequencies) have renewed interest in the frequency-dependent energetics of the EODs (Lewis et al 2014 J Neurosci 34:197). Although some modeling for that analysis has been performed, many aspects of in vivo electrocyte operation remain unclear, including the role of each compartment of the electrocyte, the amplitude of the oscillatory excursions in voltage, and the optimal way to spread the cost between stimulus and AP generation. In this talk we focus on our model of the neurally-driven electrocyte action potentials (APs) in the innervated posterior membrane that underlie the EOD. Redressing excitability-related Na+ entry constitutes the major ATP-cost for electrocytes and thus for the electric organ. To guide experimental investigation we explored several mechanisms for the generation of the synchronous string of APs. Each scenario has characteristic properties that can be tested experimentally. A highly efficient mechanism involves a tonic subthreshold stimulus mixed with a pulsatile stimulus at the required frequency. This mechanism would reveal a devil’s staircase of responses with steps at periods multiple of the driving frequency and intermediate regions with more complex behavior, if the pulsatile component is insufficient to create a discharge at the required frequency.

Primary authors: JOOS, Bela (University of Ottawa); Dr MORRIS, Catherine E (Neuroscience, OHRI)

Co-author: Ms STEIMLE, Yanna (University of Ottawa) Presenter: JOOS, Bela (University of Ottawa) Session Classification: T2-2 Nonlinear Dynamics (DPMB) / Dynamiques non linéaires (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 270 2016 CAP Congr … / Report of Contributions A Study on Low Spin States in 154 …

Contribution ID: 1252 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

A Study on Low Spin States in 154Gd Using (p,p’) Reaction Monday, 13 June 2016 13:30 (15 minutes)

Located at the stability line, the low lying spin states of the 154Gd nucleus were investigated at the University of Jyväskylä accelerator laboratory in Finland using the 154Gd(p,p’γ) reaction. A proton beam of 12 MeV was used to excite the 154Gd target, with the gamma-rays from the reaction detected with the JUROGAM II array, while the LISA charged-particle spectrometer was used for detection of the inelastically scattered protons. This experiment marked one of the first uses ofthe LISA spectrometer at Jyväskylä, and enabled the efficient tagging of the proton-emitting reactions, thus helping to distinguish between the (p,p’), and the much more copious (p, xn) channels. By analyzing the peaks obtained from the gamma-gamma, and gamma-gamma-proton, coincidence matrices, a decay scheme has been built using the RadWare software Escl8r. Experimental methods, new transitions, and future steps will be discussed.

Primary author: Mr BIDAMAN, Harris (University of Guelph) Co-authors: DIAZ-VARELA, A. (University of Guelph); Dr LAFFOLEY, A. (GANIL); JIGMED- DORJ, Badamsambuu (University of Guelph); Dr HADINIA, Baharak (University of Guelph); SVENS- SON, Carl (University of Guelph); Dr PARR, E. (University of Liverpool); Dr RAND, E. (University of Guelph); DEMAND, G. (University of Guelph); KONKI, J. (University of Jyväskylä); WONG, J. (Uni- versity of Guelph); REVILL, John (The University of Liverpool); Dr BIANCO, L. (CIRES); Dr LABICHE, M. (STFC Daresbury Laboratory); Dr SANZELIUS, M. (University of Jyväskylä); RAHKILA, Panu Jussi (University of Jyvaskyla (FI)); Dr GARRETT, Paul (University of Guelph); GREENLEES, Paul Thomas (U); Dr JULIN, R. (University of Jyväskylä); PAGE, Robert (University of Liverpool (GB)); STOLZE, S. (University of Jyväskylä); GRAHN, Tuomas (University of Jyvaskyla (FI)); Dr BILDSTEIN, V. (Univer- sity of Guelph)

Presenter: Mr BIDAMAN, Harris (University of Guelph) Session Classification: M2-1 Nuclear Structure I (DNP) / Structure nucléaire I (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 271 2016 CAP Congr … / Report of Contributions Determination of Pb-210 in water …

Contribution ID: 1253 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Determination of Pb-210 in water samples by ICP-MS after cloud point extraction using crown ethers. Wednesday, 15 June 2016 10:00 (15 minutes)

Isotopes such as Sr-90, Cs-137 Pb-210 and Po-210 are often the most important contributors to human radiation exposure due to their short half-life. The radiotoxicity of Pb-210 originates from its relatively long half-life compared with time of fulfillment of environmental processes and the high energy associated with the decay of its progeny, such as Po-210.[1] For these reasons, Pb-210 has the lowest maximum acceptable concentration in drinking water, which has been set at 0.1 Bq/L.[2] Furthermore, this radionuclide is chemically similar to alkaline earth elements making its separation challenging for complex environmental matrices. The objective of this project will be to investigate an effective way to specifically extract lead-210 and achieve interesting preconcentration factor after cloud point extraction (CPE). The increase in temperature of a micellar system allows to separate the solution in two distinct phases by dehydration of non-ionic surfactants. The use of a binding agent which has great affinity with a metal ion of interest, into the system, provides the ability to recover this complexed ion in a very small surfactant rich phase with a great preconcentration factor. Crown ethers have already demonstrated their great affinity for Pb with other kinds of extraction such as solid phase extraction (SPE) and surely can be transposed to CPE.[3] Another challenge will be to couple this extraction technique with Inductively Coupled Plasma Mass Spectrometry (ICP-MS-MS) to achieve the necessary sensitivity for analysis of Pb-210 in environmental samples and to have a rapid sample throughput. The limits of detection reach by ICP-MS-MS technique will allow the quantification of Pb-210 at ultra-trace.

[1] Larivière, D.; Reiber, K.M.; Evans, R.D.; Cornett, R.J. Anal. Chim. Acta. 2005, 549, 188-196. [2] Federal-Provincial Subcommittee on Drinking Water, Guideline for Canadian Drinking Water Quality, Environment Canada, 2001. [3] Horwitz, E.P.; Chiarizia, R.; Dietz, M.L. Solvent Extr.Ion Exc. 2007, 10 (2), 313-336.

Primary author: Mr BLANCHET-CHOUINARD, Guillaume (Chemistry department, Laval Univer- sity)

Co-author: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Presenter: Mr BLANCHET-CHOUINARD, Guillaume (Chemistry department, Laval University)

Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 272 2016 CAP Congr … / Report of Contributions Cloud Point Extraction of Plutoniu …

Contribution ID: 1254 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Cloud Point Extraction of Plutonium in Fish Tissues Coupled to Alpha Spectrometry Tuesday, 14 June 2016 19:00 (2 minutes)

A cloud point extraction procedure was developed to quantify the plutonium in environmental samples. This procedure uses a selective ligand within micelle which will complex with theelement to be extracted. The extraction is effective in highly acidic solution with the addition of bromine in the system thereby forming a shield around the micelles. In this study, this procedure is used to preconcentrate the plutonium in samples of fish. The selected ligand is P,P di-(2-ethylhexyl) methanediphosphonic acid (H2DEH[MDP]) because it has a high potential of extraction for actinides and especially for the plutonium. The cloud point extraction is coupled with an alpha spectrometer for plutonium quantification. But first, the flesh fish is treated to remove waterand organic matter before doing cloud point extraction. The samples were dried at 105 ℃ for24hours followed by dry ashing at 450 ℃ for 5 hours in an oven. The resultant ashes are then treated by wet digestion with dilute nitric acid. These steps are repeated until complete removal of organic matter. The step of dry ashing is critical since a temperature exceeding 450 ℃ reduces theyieldof plutonium because of the formation of refractory species.

Primary author: Ms LEBLANC, Alexa (Chemistry Department, Laval University) Co-author: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Presenter: Ms LEBLANC, Alexa (Chemistry Department, Laval University) Session Classification: DIMP Poster Session with beer / Session d’affiches, avec bière DPIM

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 273 2016 CAP Congr … / Report of Contributions Contactless thermal conductivity i …

Contribution ID: 1255 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Contactless thermal conductivity imaging in nanoscale semiconductors Monday, 13 June 2016 14:00 (15 minutes)

Pulsed thermoreflectance (PTR) and photothermal deflection spectroscopy (PDS) are powerful and contactless methods to simultaneously determine the thermal diffusivity and thermal conductivity of thin solid films. In PTR, the heat generated in an optically absorbing thin film by apulsedand monochromatic light beam creates a change of reflectance in the material, which is detected viaa lock-in amplifier. In PDS, the heat generated in the thin film diffuses through a transparent photothermal fluid in which the film is embedded and the thermal gradient experienced at the interface between the film and the adjoining fluid can be probed by a laser beam grazing the filmsurface and periodically deflected away from the surface by modulated changes of refractive indexes at the interface. In both PTR and PDS, the phase and amplitude of the signals are measured using position-sensitive photodetectors. From the two measured parameters, phase and amplitude, the thermal diffusivity and thermal conductivity of the sample can be simultaneously inferred without any needs of contacts on the thin film sample. Consequently, the thermal properties investigated in this way are not dependent on interface effects between the solid and metallic contacts. We demonstrate that PTS and PDS are also capable of mapping the thermal properties of thin films at the microscopic level and beyond, if PTS and PDS are coupled with a system comprising two optical microscopes, an upright optical microscope, in which pulsed monochromatic light is focussed, and an inverted optical microscope from which the signal is probed and detected. This setup will be used for imaging the thermal properties of thin films that are composite atthe nanoscale and will include collections of graphene flakes on glass and polymer-fullerene blends for organic photovoltaic applications. In case of graphene flakes on glass, different interface thermal resistivities can be observed for different types of edges, armchair and zigzag. The ultimate resolution of our imaging techniques will be discussed as well.

Primary author: Mr KAZEMIAN, Sina (PhD student) Co-authors: Mr CHOI, Dong-Yup (Bachelor of Science student); Dr BAULD, Reg (Post Doc student); Mr EZUGWU, Sabastine (PhD student) Presenter: Mr KAZEMIAN, Sina (PhD student) Session Classification: M2-7 Carbon-based Nanomaterials (DCMMP-DSS) / Nanomatériaux à base de carbone (DPMCM-DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 274 2016 CAP Congr … / Report of Contributions The NEWS-SNO project

Contribution ID: 1256 Type: Oral (Non-Student) / orale (non-étudiant)

The NEWS-SNO project Tuesday, 14 June 2016 16:45 (15 minutes)

The existence of Dark Matter in our Universe is nowadays well established, however, itsexact nature still remains unknown. The goal of the NEWS-SNO (New Experiments with Spheres in SNOLAB) project is to search for particle candidates in mass regions not yet accessible by existing experiments. The planned NEWS-SNO detector consists of a spherical TPC (time-projection- chamber) out of ultrapure copper ,filled with up to 10bar of CH4 and He gas mixtures which is read out with one small central sensor set at high voltage. Thanks to the very light nuclear mass of the employed targets as well as its very low energy threshold, the detection of spin-independent interacting WIMPS down to masses of 0.1 GeV/c2 is aimed at. This mass range for Dark Matter particles is motivated in a number of models based on dark sector forces and, e.g., millicharged models. Changing the nature and/or mix of gas, the pressure, the HV, the sensor are knobs that could be used to check a possible dark matter like signal. An overview and status of the planned experiment at SNOLAB and results of the prototype detector SEDINE operated with Neon gas in the Laboratoire Souterrain de Modane underground laboratory in France will be given.

Primary author: Dr GERBIER, Gilles (Queen’s University) Presenter: Dr GERBIER, Gilles (Queen’s University) Session Classification: T3-5 Cosmic Frontier: Dark Matter III (PPD) / Frontière cosmique: matière sombre III (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 275 2016 CAP Congr … / Report of Contributions Magnetosphere-Ionosphere Coupl …

Contribution ID: 1257 Type: Oral (Non-Student) / orale (non-étudiant)

Magnetosphere-Ionosphere Coupling at Substorm Expansion Phase Onset Monday, 13 June 2016 11:45 (15 minutes)

With the explosive release of energy within a substorm, stored magnetic energy is quickly converted to plasma kinetic energy, resulting in dramatic changes in the large-scale magnetic topology of the Earth’s night-side magnetic field and in increases in the flux of energetic particles innear- Earth space, and generates an apparently repeatable time series of events in the dynamic aurora spanning many degrees of latitude and hours of local time. Whilst the processes leading to energy storage in the magnetotail are well-understood, the same cannot be said for the conditions which lead to rapid energy release rather than a more gradual dissipation of stored energy. Without an improved understanding of the conditions leading to the triggering of rapid destabilisation of the tail, the forecast of the timing and geographical region affected by large GICs remains largely impossible. Here we examine the potential role of magnetosphere-ionosphere coupling (MIC) in triggering large scale morphological changes in the magnetotail across many hours of local time. We present ground-based magnetometer and all-sky imager observations combined with conjugate in-situ observations of the magnetic fields and temperature anisotropies of electrons and ions from GOES as well as the NASA Van Allen Probes and THEMIS satellites. By utilising the extensive ground coverage available from the Geospace Observatory (GO) Canada array we resolve longitudinal and relative timing uncertainties between the measurement platforms at onset. We seek to establish a causal sequence of events and thereby examine especially the potential role of near- Earth MIC processes in the substorm sequence, particularly that of the Akasofu auroral evolution at onset – independent of whether this precedes or follows the onset of magnetic reconnection at the near-Earth neutral line.

Primary author: Dr DIMITRAKOUDIS, Stavros (University of Alberta) Co-authors: Prof. MILLING, David K. (University of Alberta); Prof. RAE, I. Jonathan (Mullard Space Science Laboratory, University College London); Prof. MANN, Ian R. (University of Alberta); Dr MUR- PHY, Kyle R. (NASA Goddard Space Flight Center); Dr DENTON, Mick (Space Science Institute) Presenter: Dr DIMITRAKOUDIS, Stavros (University of Alberta) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 276 2016 CAP Congr … / Report of Contributions Photoinduced phase transition in v …

Contribution ID: 1258 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Photoinduced phase transition in vanadium dioxide: visualizing the time-dependent crystal potential using ultrafast electron diffraction data Tuesday, 14 June 2016 19:02 (2 minutes)

Vanadium dioxide is notable for exhibiting several low-temperature insulating phases and having a very well studied insulator-metal transition at ~68◦C that is associated with a crystallographic change from monoclinic semiconductor to rutile metal. Using a combination of ultrafast electron diffraction (UED) and broadband spectroscopy, we have recently demonstrated that photoexcita- tion of monoclinic vanadium dioxide crystals below a threshold fluence induces a transition to a metastable state with monoclinic crystallography, but metal-like optical/electronic properties. This long-lived metallic phase appears to have no equilibrium analog. A detailed structural characterization of this phase, using a 3D visualization of electron scattering potential, is the subject of this poster. This visualization techniques confirms previous suspicions and offers more dynamical information than radial pair-correlation functions.

Primary author: RENÉ DE COTRET, Laurent (McGill University) Co-author: Prof. SIWICK, Bradley (McGill University) Presenter: RENÉ DE COTRET, Laurent (McGill University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 277 2016 CAP Congr … / Report of Contributions RF-Compressed Ultrafast Electron …

Contribution ID: 1259 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

RF-Compressed Ultrafast Electron Diffraction: Long-Term Sub-50 fs Phase Stabilization in High-Brightness Instruments Tuesday, 14 June 2016 19:06 (2 minutes)

Ultrafast electron diffraction is a powerful table-top technique to characterize structural dynamics in condensed matter. We present an analysis of the phase stability of a 3 GHz radio-frequency electron pulse compression cavity. We implement low-noise microwave phase detection electronics to measure the slow drift (greater than 1 s) of the cavity resonance, allowing for continuous feedback and stabilization during an experiment. By optimally tuning the parameters of the feedback system, the additive drift of the cavity phase is reduced from ~ 1 ps to ~ 50 fs, yielding asignificant improvement in the time resolution of the instrument.

Primary author: OTTO, Martin (McGill University) Co-authors: Dr SIWICK, Bradley (McGill University); Mr STERN, Mark (McGill University) Presenter: OTTO, Martin (McGill University) Session Classification: DIMP Poster Session with beer / Session d’affiches, avec bière DPIM

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 278 2016 CAP Congr … / Report of Contributions Repeated Interaction with Ensemb …

Contribution ID: 1260 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Repeated Interaction with Ensemble of Ancillas Thursday, 16 June 2016 14:15 (15 minutes)

We investigate the general open dynamics of a quantum system S undergoing a bombardment of short (unitary) interactions with an environment made of individual ancillas. We show how decoherence emerges from the fully unitary interaction of S with a large set of (in general non-identical) ancillas, and we compute the master equation that governs the dynamics of the system. Our findings may have applications in a range of fields both fundamental and applied: from the Quantum Zeno effect and the very foundations of the measurement problem to the study of decoherence and quantum thermodynamics.

Primary authors: Mr GRIMMER, Daniel (University of Waterloo); LAYDEN, David; MARTIN-- MARTINEZ, Eduardo (Institute for Quantum Computing (University of Waterloo) and Perimeter Instit- tute for Theoretical Physics)

Presenter: Mr GRIMMER, Daniel (University of Waterloo) Session Classification: R2-5 Quantum Information and Quantum Optics (DCMMP-DAMOPC) / Information quantique et optique quantique (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 279 2016 CAP Congr … / Report of Contributions RISR-C incoherent scatter radar op …

Contribution ID: 1261 Type: Oral (Non-Student) / orale (non-étudiant)

RISR-C incoherent scatter radar operations Wednesday, 15 June 2016 14:30 (15 minutes)

The Canadian face of the Resolute Bay Incoherent Scatter Radar (RISR-C) saw first lightinAugust of 2015. To date, several different experiments measuring the polar ionosphere have been performed with RISR-C. These experiments are often complemented with data from the co-located northward facing RISR-N radar operated by SRI International. Like other Advanced Modular In- coherent Scatter (AMISR) radars, RISR-C (and RISR-N) use electronic beam steering tosample multiple look directions effectively simultaneously. Measurements of electron density, electron temperature, ion temperature, and line-of-sight velocity are made at various ranges along each of these beams in (typically) 1-minute intervals. Manipulation of the data from multiple beams and ranges allows a reasonable 3-D estimate of ionospheric parameters to be made within the field-of- view of the radar. Initial analysis of data taken by RISR-C shows that the radar is operating well and providing high quality ionospheric measurements. Further, the interesting first results from the radar demonstrate the potential for collaborations with existing ground- and space-based polar instruments.

Primary author: GILLIES, Rob (University of Calgary) Co-authors: VAN EYKEN, Anthony (SRI International); KNUDSEN, David (University of Cal- gary); SPANSWICK, Emma (University of Calgary); DONOVAN, Eric (University of Calgary); ST. MAURICE, Jean-Pierre (University of Saskatchewan); KELLY, John (SRI International); SCHUTZER, Mark (SRI International); CONNORS, Martin (Athabasca University); GREFFEN, Michael (SRI Inter- national); MALONE, Moyra (SRI International); MICHAEL, Nicolls (SRI International); VALENTIC, Todd (SRI International)

Presenter: GILLIES, Rob (University of Calgary) Session Classification: W2-3 Remote Sensing (DASP) / Détection à distance (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 280 2016 CAP Congr … / Report of Contributions Scalar fields in a shell: the respons …

Contribution ID: 1262 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Scalar fields in a shell: the response of an Unruh-Dewitt detector inside, and what it means for us outside Tuesday, 14 June 2016 19:04 (2 minutes)

We show that a particle detector can distinguish the interior of a hollow shell from at space for switching times much shorter than the light-crossing time of the shell, even though the local metrics are indistinguishable. This shows that a particle detector can read out information about the non-local structure of spacetime even when switched on for scales much shorter than the characteristic scale of the non-locality.

Primary author: NG, Keith (University of Waterloo) Co-authors: MARTIN-MARTINEZ, Eduardo (Institute for Quantum Computing (University of Wa- terloo) and Perimeter Instittute for Theoretical Physics); MANN, Robert (University of Waterloo); Dr LIN, Shih-Yuin (National Center for Theoretical Sciences)

Presenter: NG, Keith (University of Waterloo) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 281 2016 CAP Congr … / Report of Contributions The Conformal Standard Model, H…

Contribution ID: 1263 Type: Invited Speaker / Conférencier invité

The Conformal Standard Model, Higgs Portal Extensions, and Dark Matter Wednesday, 15 June 2016 15:15 (30 minutes)

One of the possible custodial symmetries responsible for naturalness in the Standard Model is conformal (scale invariance) symmetry of the Lagrangian. After a brief review of the Higgs mechanism in the classically-conformal Standard Model, Higgs-portal singlet extensions as a model for dark matter are introduced. Results for the dark matter mass and cosmological abundance predictions in these Higgs-portal models will be presented.

Primary author: STEELE, Tom (U of Saskatchewan) Presenter: STEELE, Tom (U of Saskatchewan) Session Classification: W3-5 Cosmology and Astrophysics (DTP-DIMP-PPD) / Cosmologie et astrophysique (DPT-DPIM-PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 282 2016 CAP Congr … / Report of Contributions Critical noise parameters for fault …

Contribution ID: 1264 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Critical noise parameters for fault tolerant quantum computation Tuesday, 14 June 2016 14:30 (15 minutes)

Noise is imminent to a quantum computing process. With the help of quantum error correcting codes, the logical information in a qubit can be preserved by encoding it in a system of several physical qubits and by performing gates in a fault tolerant manner. However, it is crucial to know the noise model affecting the physical qubits, in order to estimate the error on the logical qubitand thereby the overhead required for fault tolerant quantum computation. For some specific types of quantum channels it is easy to identify a parameter of the physical channel that controls the logical error rate. However, for a realistic noise model, it is unclear which of the physical parameters are critical to the logical error rate.

In this work, we aim to determine the parameters of a single qubit channel that can tightly bound the logical error rate of the concatenated Steane code. We do not assume any a priori structure for the physical quantum channel, except that it is a completely positive trace preserving (CPTP) map. Our method of estimating the logical error rate differs significantly from the standard and computationally expensive Monte-Carlo sampling of the error distribution. We employ a technique to compute the complete effect of a physical CPTP map, at the logical level, with just one roundof error correction. By such numerical simulations on random quantum channels, we have studied the predictive power of several physical noise metrics on the logical error rate, and show that, on their own, none of the natural physical metrics lead to accurate predictions about the logical error rate. We then show how machine learning techniques help us to explore which features of a random quantum channel are important in predicting its effect at the logical level.

Primary author: Mr IYER, Pavithran (Université de Sherbrooke) Co-author: Prof. POULIN, David (Université de Sherbrooke) Presenter: Mr IYER, Pavithran (Université de Sherbrooke) Session Classification: T2-6 Condensed Matter Theory (DTP-DCMMP) / Théorie dela matière condensée (DPT-DPMCM)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 283 2016 CAP Congr … / Report of Contributions Investigations of the Intermolecul …

Contribution ID: 1265 Type: Invited Speaker / Conférencier invité

Investigations of the Intermolecular Interactions between Organic Conjugated Monomers, and Conjugated Oligomers and Nanotubes Using Dispersion-Corrected DFT Tuesday, 14 June 2016 13:15 (30 minutes)

This talk will focus on discussing and analyzing intermolecular interactions between organic conjugated polymers used in organic light-emitting diodes (OLEDs) and between conjugated oligomers and carbon nanotubes (CNTs) in CNT-oligomer composites. Dispersion-corrected density functional theory will be employed to study these systems. The construction of multilayered OLEDs typically involves extensive experimental searches for the combinations of polymers that give the optimum device performance. As an example, combinations of different fluorene-based conjugated polymers such as alternating triphenylamine-fluorene (TPAF)- and oxadiazole-fluorene (OxF)-based conjugated copolymers were considered as components of multilayered OLEDs. It was found that certain combination gave the best OLED performance. Our results illustrate that the best combination of polymers has monomers that have the closest intermolecular distance and the highest binding energy relative to all the other combinations. Pure CNT and CNT-oligomer/polymer composites have many useful (industry related) properties: ranging from electrical conductivity to superior strength. However the full potential of using CNTs as reinforcements (in say a polymer matrix) has been severely limited because of complications associated with the dispersion of CNTs. CNTs tend to entangle with each other forming materials that have properties that fall short of the expectations. The goal of this work is to identify the type of conjugated oligomers that arebest suited for the dispersion of single walled CNT (SWCNT). We investigate the effect of intermolecular interactions on the structure, polarity and energetics of the oligomers in presence of SWCNT.

Primary author: LAGOWSKI, Jolanta (Memorial University of Newfoundland) Presenter: LAGOWSKI, Jolanta (Memorial University of Newfoundland) Session Classification: T2-6 Condensed Matter Theory (DTP-DCMMP) / Théorie dela matière condensée (DPT-DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 284 2016 CAP Congr … / Report of Contributions A Primary Cold-Atom Based Vacu …

Contribution ID: 1266 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

A Primary Cold-Atom Based Vacuum Pressure Standard Tuesday, 14 June 2016 19:04 (2 minutes)

Laser cooling and trapping of atoms has created a revolution in physics and technology. For example, the GPS network used for global navigation relies on cold atoms for time keeping. This poster will review the recent advances of our research program which is aimed at creating a cold-atom based primary pressure standard for the high-, and ultra-high vacuum regimes. Cold, trapped atoms can act as very sensitive flux detectors owing to the fact that they form an ensembleof non-interacting particles whose momenta, positions, and quantum states are well-controlled. A particle in the vacuum environment which passes through the cold atom’s collision cross-section imparts momentum to the trapped particle. The collision is detected when the momentum gain is large enough to eject the cold atom from the trap, observed as a decrease in the light scattered from the trapped ensemble. The loss rate of trapped particles, detected optically, transduces the particle flux (pressure) into a timing signal. The loss rate is sensitive to both the type ofcollision and collision partner, as well as to the state of the trapped atom and the trap depth in which it is confined [1]. Thus, this provides an opportunity to study collisions and collisions physics indif- ferent types of traps, their dependence on trapped atom electronic state, and the spectroscopy of trap loss as a function of trap depth, all while working towards a new standard. The advantages of a cold atom standard include the fact the sensor relies on immutable, long-range interaction properties of atomic matter and that it will be a primary pressure standard, tied directly to thebaseSI unit of the second. [1] D. Fagnan, J. Wang, C. Zhu, P. Djuricanin, B. G. Klappauf, J. L. Booth and K. W. Madison, Phys. Rev. A 80, 022712, 2009.

Primary author: Mr JOOYA, Kais (University of British Columbia) Co-authors: Dr BOOTH, James (British Columbia Institute of Technology); Dr VAN DONGEN, Janelle (University of British Columbia); Prof. MADISON, Kirk (Universtiy of British Columbia) Presenter: Mr JOOYA, Kais (University of British Columbia) Session Classification: DIMP Poster Session with beer / Session d’affiches, avec bière DPIM

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 285 2016 CAP Congr … / Report of Contributions Experimental and Theoretical He- …

Contribution ID: 1267 Type: Oral (Non-Student) / orale (non-étudiant)

Experimental and Theoretical He-Broadened Line Parameters of Carbon Monoxide in the Fundamental Band Monday, 13 June 2016 11:00 (15 minutes)

We will discuss recent spectroscopic results for He-broadened transitions of carbon monoxide in the fundamental band, performed over a range of temperatures from 80 to 296 K. Experimentally, the spectral line parameters and their temperature dependencies were retrieved using a multispectrum analysis software and different line shape models (Voigt, speed dependent Voigt, Rautian, Rautian with speed dependence). In addition, we have performed theoretical calculations for He- broadened Lorentz half-width coefficients and He- pressure-shift coefficients for the same transitions. The line mixing coefficients were calculated using the exponential power gap andenergy corrected sudden scaling laws. Our results were compared with published results.

Primary author: PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Co-authors: Prof. MANTZ, Arlan (Dept. of Physics, Astronomy and Geophysics, Connecticut Col- lege, New London, CT 06320, USA); Dr THIBAULT, Franck (Institut de Physique de Rennes, UMR CNRS 6251, Université de Rennes 1, 35042 Rennes, France); Ms ROZARIO, Hoimonti (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Mr NASERI, Hossein (De- partment of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Mr ESTEKI, Koorosh (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Dr DEVI, Malathy (Department of Physics, The College of William and Mary, Williams- burg, VA 23187, USA); Dr SMITH, Mary Ann (Science Directorate, NASA Langley Research Center, Hampton, VA 23681, USA); Ms LATIF, Shamria (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Presenter: PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Leth- bridge, Lethbridge, AB, T1K 6R4 Canada) Session Classification: M1-7 Atomic and Molecular Spectroscopy and Precision Measure- ments I (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision I (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 286 2016 CAP Congr … / Report of Contributions Observation of gravitational wave …

Contribution ID: 1268 Type: Invited Speaker / Conférencier invité

Observation of gravitational waves from a binary black hole merger Tuesday, 14 June 2016 08:30 (30 minutes)

On September 14, 2015, the LIGO detectors observed gravitational waves from a merger of two black holes. This talk describes the LIGO instruments and the LIGO Scientific Collaboration. It presents details of the observed gravitational wave event and discusses implications to astrophysics and tests of general relativity.

Primary author: Prof. PFEIFFER, Harald (CITA, University of Toronto) Presenter: Prof. PFEIFFER, Harald (CITA, University of Toronto) Session Classification: T1-8 General Relaivity (DTP) / Relativité générale (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 287 2016 CAP Congr … / Report of Contributions Detection of hydrogen in steel wit …

Contribution ID: 1269 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Detection of hydrogen in steel with an N-15 nuclear resonance Wednesday, 15 June 2016 14:15 (15 minutes)

We have used a 6.38 MeV N-15 nuclear resonance to detect hydrogen in steel that had been electro- plated with a protective Cd surface coating. With the sample maintained at room temperature, we observed a rapid decline in hydrogen concentration during the measurement, indicative of beam- induced hydrogen detrapping and mobility. It appears that the hydrogen concentration falls off as a simple exponential decay with ion fluence, however it settles at a finite hydrogen concentration different from 0. In spite of the hydrogen loss, we have been able to detect small concentrations of hydrogen which has diffused into the bulk of the steel sample. We also studied in more detailthe temperature dependence and aysmptotic behaviour of the hydrogen loss and will report on these studies.

Primary author: LAROCHELLE, Jean-Simon (Université de Montréal) Co-authors: DESILETS-BENOIT, Alexandre (Université de Montréal); ROORDA, Sjoerd (Université de Montréal)

Presenter: LAROCHELLE, Jean-Simon (Université de Montréal) Session Classification: W2-5 Thin Films II (DCMMP-DSS) / Couches minces II (DPMCM- DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 288 2016 CAP Congr … / Report of Contributions Neutron EDM Experiment at TRIU …

Contribution ID: 1270 Type: Oral (Non-Student) / orale (non-étudiant)

Neutron EDM Experiment at TRIUMF Thursday, 16 June 2016 13:15 (15 minutes)

I discuss plans and recent R&D progress for a new neutron electric dipole moment (nEDM) experiment to be conducted at TRIUMF. The nEDM is sensitive to CP violation arising from new physics beyond the standard model, and arising in the strong sector of the standard model (the strong CP problem). The experiment at TRIUMF will feature a new superfluid helium source of ultracold neutrons (UCN) so that the statistical sensitivity can be improved over previous experiments. We aim for a factor of 30 improvement in precision over the previous best nEDM experiment, resulting in a 1×10−27 e-cm uncertainty on the nEDM. At the new level of statistical precision to be reached by this experiment, a host of systematic effects must be handled to higher precision than ever before. This talk will provide an overview of our R&D efforts, aimed at improving the statistical precision and reducing systematic effects to an acceptable level. There will be some focus on our studiesof magnetic field generation and characterization.

Primary author: Prof. MARTIN, Jeffery (The University of Winnipeg) Presenter: Prof. MARTIN, Jeffery (The University of Winnipeg) Session Classification: R2-3 Testing Fundamental Symmetries II (PPD-DNP-DTP) / Tests de symétries fondamentales II (PPD-DPN-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 289 2016 CAP Congr … / Report of Contributions Structure and Dynamics with Ultr …

Contribution ID: 1271 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Structure and Dynamics with Ultrafast Electron Microscopes: Watching nano-microstructural evolution during complex crystallization in a-Ge Tuesday, 14 June 2016 19:00 (2 minutes)

The crystallization of amorphous semiconductors is a strongly exothermic process. Once initiated, the release of latent heat can be sufficient to drive a self-sustaining crystallization front through the material in a manner that has been described as explosive. Using Dynamic Transmission Electron Microscope (DTEM), we have obtained time-resolved snap shots of three distinct microstructural zones as they are formed following pulsed laser excitation. This allows the direct observation of a rich variety of physical processes occurring at nanosecond time scales, including nanocrystal- lite nucelation and grain growth, crystallization front faceting and self-diffusion at the interface as well as the onset of complex layered microstructure far from initially illuminated zone. This work reveals new insights into the mechanisms governing this complex crystallization process and provides a dramatic demonstration of the power of DETM for studying time-dependent material processes far from equilibrium.

Primary author: STERN, Mark (McGill University) Co-author: Dr SIWICK, Bradley (McGill University) Presenter: STERN, Mark (McGill University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 290 2016 CAP Congr … / Report of Contributions Investigating the nature of excited …

Contribution ID: 1272 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Investigating the nature of excited 0+ states populated via the 162Er(p,t) reaction Monday, 13 June 2016 13:45 (15 minutes)

Many approaches have been implemented in nuclear structure physics to interpret the nature of excited states in well-deformed nuclei, such as vibrational excitations in β phonons and γ phonons, as well as pairing excitations. However, due to a paucity of data about excited states in rare earth + nuclei, in many cases even the first excited state, 02 , is not known. Direct two-neutron transfer reactions are a valuable tool for probing 0+ → 0+ transitions in well- deformed nuclei. Excited 0+ states in the N = 92 nucleus 160Er have been studied via the (p, t) reaction with a highly-enriched 162Er target at the Maier-Leibnitz Laboratory in Garching, Ger- many, using a proton beam energy of 22 MeV and 24 MeV supplied by a Tandem Van de Graaff. Reaction products were momentum-analyzed with a Quadrupole-3-Dipole magnetic spectrograph. + Strong population of the 02 state was observed with a large cross section greater than any other excited 0+ state. Preliminary results of the relative population of excited 0+ states in 160Er and a possible intepretation will be presented.

Primary authors: BURBADGE, Christina (University of Guelph); GARRETT, P.E. (University of Guelph)

Co-authors: DIAZ VARELA,A. (University of Guelph); MACLEAN, A.D. (University of Guelph); RADICH, A.J. (University of Guelph); SVENSSON, C.E. (University of Guelph); KISLIUK, D. (University of Guelph); JAMIESON, D.S. (University of Guelph); BALL, G.C. (TRIUMF); WIRTH, H.-F. (Ludwig-Max- imilians-Universit\”{a}t M\”{u}nchen); LORANGER, J. (University of Guelph); LEACH, K.G. (Colorado School of Mines); DUNLOP, M.R. (University of Guelph); DUNLOP, R. (University of Guelph); HERTEN- BERGER, R. (Ludwig-Maximilians-Universit\”{a}t M\”{u}nchen); TRIAMBAK, S. (University of the West- ern Cape); FAESTERMANN, T. (Technishe Universitat Munchen); BILDSTEIN, V. (University of Guelph)

Presenter: BURBADGE, Christina (University of Guelph) Session Classification: M2-1 Nuclear Structure I (DNP) / Structure nucléaire I (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 291 2016 CAP Congr … / Report of Contributions Nanoscale enhancement in quantu …

Contribution ID: 1273 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Nanoscale enhancement in quantum state preparation Wednesday, 15 June 2016 09:30 (15 minutes)

The use of nanoscale structures to enhance local electric fields has seen much recent use inimprov- ing the effectiveness of numerous, optically-driven systems. As such, we investigate howthese nanoscale enhancements can be used to improve the operation of quantum control systems. These nanoscale systems have various different effects on quantum systems, but in most cases areable to increase the local electric field and the spontaneous decay experienced by transitions inthe system. The most noticeable property of these enhancements is that are strongly dependant on the position and quantization axis of the system relative to the arrangement of materials in the nanostructure. With this in mind we investigate how this directional dependance can be exploited to improve the overall operation of quantum informations systems. We take advantage of non-symmetric structures and different driving field directions in order to selectively tune the environment of a quantum system. We also show that simple noble metal nanoparticles can arranged and used to rapidly prepare pure state qubits from arbitrary mixed states while retaining low decoherence during regular operations.

Primary authors: RANGAN, Chitra (University of Windsor); DILORETO, Christopher (University of Windsor)

Presenter: DILORETO, Christopher (University of Windsor) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 292 2016 CAP Congr … / Report of Contributions First and second order Viriel coeffi …

Contribution ID: 1274 Type: Poster (Non-Student) / affiche (non-étudiant)

First and second order Viriel coefficients for a gas of anyons Tuesday, 14 June 2016 19:08 (2 minutes)

In this work, we study, using numerical -Monte Carlo- simulations, quantum properties of a gas of anyons with a topological-type interaction in finite three dimensional space-time. This model is an effective description of the Abelian Higgs model with the Chern-Simons theories. The effective anyon gas with topological-type interaction is already constructed and developped in the lattice in [1;2]. In the present work, we add two anyons travelling the time direction of the lattice and compute the first and second order Viriel coefficients of the model. We present our numerical computations and analyse the Data. References: [1] R. MacKenzie, F. Nebia-Rahal, and M.B. Paranjape, Phys. Rev. D 81,114505 (2010). [2] R. MacKenzie, F. Nebia-Rahal, M. B. Paranjape, J. Richer, Phys. Rev. D 82, 074506 (2010).

Primary author: NEBIA, Faïza (Cégep du Vieux Montréal) Co-authors: Dr RICHER, Jacques (Université de Montréal); Prof. PARANJAPE, Manu (Université de Montréal); Prof. MACKENZIE, Richard (Université de Montréal) Presenter: NEBIA, Faïza (Cégep du Vieux Montréal) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 293 2016 CAP Congr … / Report of Contributions Self- and Hydrogen-Broadened Lin …

Contribution ID: 1275 Type: Oral (Non-Student) / orale (non-étudiant)

Self- and Hydrogen-Broadened Line Parameters of Carbon Monoxide in the First Overtone Band Monday, 13 June 2016 11:15 (15 minutes)

We have re-analyzed room-temperature spectra of first overtone band of CO and CO broadened by hydrogen. We have employed the Voigt, speed depended Voigt, Rautian, and Rautian with speed dependence line shape models and a multispectrum fit software [1]. The line mixing coefficients have been calculated using scaling laws. The CO line widthsinCO- Hydrogen and CO-CO collisions were calculated using the classical impact theory [2] to determine the dipole absorption half-widths and exact 3D Hamilton equations to simulate molecular motion. We used Monte Carlo averaging over collision parameters and simple interaction potential (Tipping-Herman + electrostatic) [3-4] and assumed the molecules to be rigid rotors. The dependencies of CO half-widths on rotational quantum number J<24 are computed and compared with measured data at room temperature.

REFERENCES 1. D.C. Benner, C.P. Rinsland, V. Malathy Devi, M.A.H. Smith, D. Atkins, J. Quant. Spectrosc. Rad. Transfer 53(6) 705-721 (1995). 2. R.G. Gordon, J. Chem. Phys. 44, 3083-3089 (1966); ibid., 45, 1649-1655 (1966). 3. J.-P. Bouanich, A. Predoi-Cross, J. Molec Structure 742, 183-190 (2005). 4. A. Predoi-Cross, J.P. Bouanich, D. Chris Benner, A.D. May, J.R. Drummond, J. Chem. Phys. 113, 158-168 (2000).

Primary author: Prof. PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Co-authors: Prof. MANTZ, Arlan (Dept. of Physics, Astronomy and Geophysics, Connecticut Col- lege, New London, CT 06320, USA); Mr NASERI, Hossein (Department of Physics and Astronomy, Uni- versity of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Mr ESTEKI, Koorosh (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Dr DEVI, Malathy (Depart- ment of Physics, The College of William and Mary, Williamsburg, VA 23187, USA;); Dr SMITH, Mary Ann (Science Directorate, NASA Langley Research Center, Hampton, VA 23681, USA); Dr IVANOV, Sergey (Institute on Laser and Information Technologies, Russian Academy of Sciences (ILIT RAS), 2, Pionerskaya Str., 142190 Troitsk, Moscow, Russia)

Presenter: Prof. PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada) Session Classification: M1-7 Atomic and Molecular Spectroscopy and Precision Measure- ments I (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision I (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 294 2016 CAP Congr … / Report of Contributions Cover gas board for the SNO+ Uni …

Contribution ID: 1276 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Cover gas board for the SNO+ Universal Interface Tuesday, 14 June 2016 19:08 (2 minutes)

The SNO+ experiment is a large-scale liquid scintillator detector with a focus on investigating neutrinoless double beta decay. In order to fully calibrate the experiment, human access is required to within the detector region and therefore careful consideration is needed to prevent radon ingress from the mine air, a significant source of background. A cover gas system is being developed to pump on specific volumes located on the Universal Interface (UI), used to introduce calibration sources into the detector volume, where there is potential for contact with mine air and purge it with inert nitrogen gas. The development of the cover gas board used to control the pump/purge system will be discussed here.

Primary author: Mr BARNARD, Zachariah (Laurentian University) Presenter: Mr BARNARD, Zachariah (Laurentian University) Session Classification: PPD Poster Session with beer / Session d’affiches, avec bière PPD

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 295 2016 CAP Congr … / Report of Contributions SuperCDMS and CUTE at SNOLAB

Contribution ID: 1277 Type: Oral (Non-Student) / orale (non-étudiant)

SuperCDMS and CUTE at SNOLAB Tuesday, 14 June 2016 16:15 (15 minutes)

The Super Cryogenic Dark Matter Search (SuperCDMS) experiment uses cryogenic semiconductor detectors to search for Weakly Interacting Massive dark matter Particles (WIMPs). After more than a decade of operations of CDMS and SuperCDMS and a sequence of world leading results, the experimental setup in the Soudan underground laboratory in Minnesota is being decommissioned and SuperCDMS will move to SNOLAB near Sudbury, ON for its next phase.

In this talk I will describe the status of the preparations for the construction of the new experimental setup at SNOLAB, as well as the plans for a well shielded Cryogenic Underground TEst facility (CUTE) to be installed at SNOLAB next to SuperCDMS.

Primary author: Dr RAU, Wolfgang (Queen’s University) Presenter: Dr RAU, Wolfgang (Queen’s University) Session Classification: T3-5 Cosmic Frontier: Dark Matter III (PPD) / Frontière cosmique: matière sombre III (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 296 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Two-Hit and …

Contribution ID: 1278 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

**WITHDRAWN** Two-Hit and Two-Track Resolution of a Micromegas TPC with a Resistive Layer Including the Effects of Charge Induction Monday, 13 June 2016 17:00 (15 minutes)

The Time Projection Chamber (TPC) for the International Linear Collider (ILC) will needtomea- sure about 200 track points with a spatial single-hit resolution close to 100 microns. A Micro Pattern Gas Detector (MPGD) readout TPC with a resistive layer can achieve the desired resolution. A new readout technique using the principle of charge dispersion with a resistive layer on a Micromegas has indeed demonstrated that the single-hit transverse and longitudinal resolution goals have been met. The next step of the R&D for a TPC at the ILC is concerned with two-hitand two-track separation. In this presentation, a detailed simulation of two-hit and two-track resolution study will be presented. Previous simulations of the ILC TPC have not taken into account the induction of charge on the neighboring readout pads caused by the electrons when they traverse the induction region. The goal of this project is to build and run simulations that take the complete charge induction signals convoluted with the resistive layer response into account for the calculation of the bias correction and pad response function required for a detailed reconstruction of tracks at the ILC TPC.

Primary author: ODELL, Roger (Carleton University) Presenter: ODELL, Roger (Carleton University) Session Classification: M3-5 Cosmic frontier: Dark matter I (PPD) / Frontière cosmique: matière sombre I (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 297 2016 CAP Congr … / Report of Contributions The “Impenetrable Barrier” Revisit …

Contribution ID: 1279 Type: Oral (Non-Student) / orale (non-étudiant)

The “Impenetrable Barrier” Revisited: Bursting the VLF Bubble Monday, 13 June 2016 10:30 (15 minutes)

In a recent paper, Baker et al. (Nature, 2014) reported the observation of an “impenetrable barrier” to the inner edge of the ultra-relativistic electron radiation belt. These authors demonstrated that this barrier location was not coincident with the location of the plasmapause nor any other iden- tifiable magnetospheric boundary; nor could it be explained by the scattering of ultra-relativistic electrons into the loss cone by ground-based VLF transmitters. Here we show that the transport and energization timescales depend on gradients in the phase space density and not simply by timescales derived from the magnitude of the radial diffusion coefficient alone. Using these correctly formulated transport timescales, we show how the location of the “impenetrable barrier” can be explained in terms of radial diffusion, including the impacts of dynamical variations in phase space density gradients. Contrary to the suggestion by Baker et al., 2014 there does not appear to be any need for active local wave particle acceleration between the plasmapause and the edge of the barrier at L~2.8 since the radial diffusion rates appear to be sufficient to transport particles there during the most active times. The “impenetrable barrier” is explained as being the location where phase space density gradient and the diffusion coefficient combine to effectively block further inward ULF wave radial transport. During more active times the timescale for transport around L~2.8 can be increased allowing penetration of electrons into the slot. However, under typical conditions the activity does not remain high enough for a sufficiently long time to enable electron penetration below L~2.8. Overall, the “impenetrable barrier” is explained as a simple and natural consequence of the activity-dependent rates of ULF wave diffusive transport and significantly no local acceleration processes are required to explain how the particles reach the inner edge of the “barrier” at L~2.8.

Primary author: OZEKE, Louis (University of Alberta) Co-authors: Prof. MANN, Ian R. (University of Alberta); Dr MURPHY, Kyle R. (NASA Goddard Space Flight Center); Dr DIMITRAKOUDIS, Stavros (University of Alberta) Presenter: Dr DIMITRAKOUDIS, Stavros (University of Alberta) Session Classification: M1-3 Theory, Modelling, and Forecasting I (DASP) / Théorie, mod- élisation et prévisions I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 298 2016 CAP Congr … / Report of Contributions The Oxygen A-Band Spectra Revis …

Contribution ID: 1280 Type: Oral (Non-Student) / orale (non-étudiant)

The Oxygen A-Band Spectra Revisited Monday, 13 June 2016 16:30 (15 minutes)

We have re-analyzed the A-band spectra of oxygen and oxygen broadened by nitrogen previously published by our research group [1,2]. We have used a multispectrum fit analysis [3] and different line shape models. The line shape narrowing (Dicke) effects were incorporate using theoretical calculations for the self diffusion coefficients and Maxwell–Stefan diffusion coefficients discussed. We have compared our re-analysis results with published results available in the literature.

REFERENCES 1. A. Predoi-Cross, C. Holladay, H. Heung, J.-P. Bouanich, G.Ch. Mellau, R. Keller, D.R. Hurtmans, Nitrogen-broadened lineshapes in the oxygen A-Band: experimental results and theoretical calculations, J. Mol. Spectrosc. 251 (2008) 159-175. 2. A. Predoi-Cross, K. Hambrook, R. Keller, D. Hurtmans, C. Povey, H. Over, G. Mellau, Spectro- scopic Lineshape Study of the Self-Perturbed Oxygen A-Band, J. Mol. Spectrosc. 248 (2008) 85-110. 3. 1. D.C. Benner, C.P. Rinsland, V. Malathy Devi, M.A.H. Smith, D. Atkins,A multispectrum nonlinear least squares fitting technique, J. Quant. Spectrosc. Rad. Transfer 53(6) 705-721 (1995).

Primary author: Prof. PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Co-authors: Prof. GHOUFI, Aziz (Institut de Physique de Rennes, UMR CNRS 6251, Université de Rennes 1, 35042 Rennes, France); Ms ROZARIO, Hoimonti (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Ms LATIF, Shamria (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Presenter: Prof. PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada) Session Classification: M3-2 Atomic and Molecular Spectroscopy and Precision Measure- ments II (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision II (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 299 2016 CAP Congr … / Report of Contributions Metallization of a neutral organic …

Contribution ID: 1281 Type: Oral (Non-Student) / orale (non-étudiant)

Metallization of a neutral organic radical by pressure Thursday, 16 June 2016 09:15 (15 minutes)

We have measured resistivity vs. temperature and pressure on the fluoro-substituted oxobenzene- bridged bisdithiazolyl radical, FBBO. This is a layered, single component organic compound thatis a Mott insulator at ambient pressure, due to the singly occupied molecular orbitals and anintrin- sically high inter-molecular charge transfer energy barrier. Previous room temperature infrared absorption and conductivity measurements suggest that the charge gap of 0.1eV closes and the sample may become metallic at pressures above 3GPa[1]. We report direct transport measurements under various pressures on powder samples of FBBO down to low temperature, measured in an anvil pressure cell, that demonstrate the first metallization of a neutral organic radical.

[1] A. Mailman, et al., J. Am. Chem. Soc. 134, 9886 (2012). [2] D. Tian et al., J. Am. Chem. Soc. 137, 13146 (2015).

Primary author: Mr TIAN, Di (University of Toronto) Co-authors: Dr MAILMAN, Aaron (University of Jyvaskyla); Prof. TSE, John (University of Saskatchewan); Prof. OAKLEY, Richard (University of Waterloo); Prof. JULIAN, Stephen (University of Toronto); Dr WINTER, Steve (University of Frankfurt) Presenter: Prof. JULIAN, Stephen (University of Toronto) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 300 2016 CAP Congr … / Report of Contributions The Measurement of Actinides by…

Contribution ID: 1282 Type: Oral (Non-Student) / orale (non-étudiant)

The Measurement of Actinides by Accelerator Mass Spectrometry Wednesday, 15 June 2016 08:45 (15 minutes)

We developed a simple method to separate Pu and Am isotopes from the sample matrix using a single extraction chromatography column and to measure the concentrations of the isotopes by isotope dilution accelerator mass spectrometry (AMS). Pu and Am in the extraction chromatography column eluent were coprecipitated with NdF3 or Fe(OH)3 and the precipitates were analyzed by AMS at the University of Ottawa, A.E. Lalonde AMS Laboratory. The advantages of each precipitation method were assessed by studying the sensitivity, detection limits, and precision of the Am and Pu isotope measurements. The strongest AMS beams of Pu and Am were produced when there was a large excess of fluoride donor atoms in the target and the NdF3 precipitates were diluted with PbF2. The measured concentrations of Pu-239,240 and Am-241 agreed with thecon- centrations in standards of known activity and with IAEA certified reference materials. This work demonstrated that both oxide and fluoride targets produce reliable beams of actinide anions and that the measurement of actinides using fluorides agrees with measurements made using oxide precipitates and with the values in certified reference materials.

Primary author: CORNETT, Jack (University of Ottawa) Co-authors: CHARLES, Christopher (University of Ottawa); KIESER, William (University of Ot- tawa); ZHAO, Xiaolei (University of Ottawa); KAZI, Zakir (University of Ottawa) Presenter: CORNETT, Jack (University of Ottawa) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 301 2016 CAP Congr … / Report of Contributions Using Langmuir Probe and facepla …

Contribution ID: 1283 Type: Oral (Non-Student) / orale (non-étudiant)

Using Langmuir Probe and faceplate current measurements to validate Swarm Electric Field Instrument bulk ion drifts Tuesday, 14 June 2016 09:45 (15 minutes)

The 3D ion drift measurements from the Electric Field Instruments (EFI) of the European Space Agency’s Swarm mission provide excellent opportunities for multi-satellite and ground-conjunction investigations of ionospheric and auroral physics. Ion drifts are derived from estimates of low- energy (<10 eV) ion energy/angle distributions obtained by Thermal Ion Imagers. In practice, the EFI datasets exhibit sometimes large and often time-varying offsets in the ion drift vector components. Measurements parallel to the satellite velocity vector typically have the greatest uncertainty, with significant contributions from uncertainties in spacecraft-to-plasma potential and ion atomic mass, as well as other sources. Here we present initial findings of an investigation into the feasibility of using simultaneous estimates of ion flux from the EFI Langmuir probes and faceplate current measurements to validate the Swarm along-track ion drifts. Under certain conditions a comparison of TII ion drifts with LP-derived drifts can reveal variations in the mean ionatomic mass in the topside F region ionosphere.

Primary author: BURCHILL, Johnathan (University of Calgary) Co-author: Prof. KNUDSEN, David (University of Calgary) Presenter: BURCHILL, Johnathan (University of Calgary) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 302 2016 CAP Congr … / Report of Contributions Tunneling decay of false vortices: …

Contribution ID: 1284 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Tunneling decay of false vortices: Gravitational effects Tuesday, 14 June 2016 14:30 (15 minutes)

We consider the decay of vortices trapped in a U(1)-breaking false vacuum of a Einstein-Hilbert- Higgs theory in 2 + 1 dimensions. In the true vacuum, the U(1) symmetry is unbroken. The potential of the model allows the formation of metastable vortex solutions. These vortices contain the true vacuum inside in addition to a unit of magnetic flux and the appropriate topologically nontrivial false vacuum outside. The work presented extends a previous analysis by coupling the vortices to gravity. We employ numerical methods as well as analytic methods using the so-called thin-wall approximation to verify that static metastable vortices remain when gravity is turned on. In the latter case, knowledge of the metric of space-time inside and outside the core of the vortex allows one to use Israel’s junction conditions and to study the dynamics of the vortex’s radius. We compute an estimate for the tunneling amplitude of the vortex in the semiclassical approximation. This process of tunneling through expansion of a vortex core is of cosmological importance, as it could be much more rapid than the spontaneous decay of the false vacuum.

Primary authors: LEE, Bum-Hoon (Sogang University); YEOM, Dong-han (National Taiwan Uni- versity); PARANJAPE, Manu (Université de Montréal); MACKENZIE, Richard (U. Montréal); LEE, Wonwoo (Sogang University); GOBEIL, Yan (McGill University); DUPUIS, Éric (Université de Mon- tréal)

Presenter: DUPUIS, Éric (Université de Montréal) Session Classification: T2-7 Gravity, Astrophysics and Cosmology (DTP) / Gravité, astrophysique et cosmologie (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 303 2016 CAP Congr … / Report of Contributions Femtomedicine in Cancer: Discov …

Contribution ID: 1286 Type: Invited Speaker / Conférencier invité

Femtomedicine in Cancer: Discovery of New Antitumor Molecules for Natural Targeted Chemotherapy and Radiotherapy of Cancers Monday, 13 June 2016 13:00 (30 minutes)

The conquest of cancer continues to pose great challenges to medical science. Thereisacom- pelling need for innovative cancer research integrating biomedical sciences with physical sciences in order to ultimately conquer cancer. Femtomedicine (FMD), which integrates femtosecond time- resolved laser spectroscopy with biomedical sciences, was recently coined to advance fundamental understanding and therapies of human diseases notably cancer [1,2]. Our studies in FMD have led to the discoveries of the reductive damaging mechanism in DNA and living cells and the molecular mechanisms of action of existing anti-cancer agents. These have offered unique opportunities to develop new effective drugs for high-performance therapy of cancer[3,4]. We have particularly found a new class of non-platinum-based anticancer compounds (called FMD compounds) for natural targeted chemotherapy and radiotherapy of a variety of cancers, e.g., cervical cancer, ovarian cancer, head and neck cancer, breast cancer, lung cancer, etc. Treatments of various cancer cells in vitro and in vivo mouse xenograft models with FMD compounds led to effective chemotherapy and enhanced radiotherapy, while the compounds themselves induced no or little systemic and radiation toxicity. These compounds are therefore a new class of potent antitumor agents thatcan be translated into clinical trials for targeted chemotherapy and radiotherapy of multiple types of cancer. The results also show that FMD can bring breakthroughs in understanding fundamental biological processes and lead to advances in cancer therapy. This presentation will discuss some progress in this new frontier—FMD in Cancer.

1. QB Lu, Mutat. Res.: Rev. Mutat. Res. 704, 190-199 (2010). 2. J Nguyen et al., PNAS 108, 11778-11783 (2011). 3. QB Lu et al., EBioMedicine 2, 544-553 (2015). 4. CR Wang et al., Mol. Cancer Ther. (2016). doi: 10.1158/1535-7163.MCT-15-0862.

Primary author: Prof. LU, Qing-Bin (University of Waterloo) Presenter: Prof. LU, Qing-Bin (University of Waterloo) Session Classification: M2-2 Molecular Biophysics (DPMB) / Biophysique moléculaire (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 304 2016 CAP Congr … / Report of Contributions Ro-Vibrational Emission Spectra o …

Contribution ID: 1287 Type: Oral (Non-Student) / orale (non-étudiant)

Ro-Vibrational Emission Spectra of DCN Revisited Monday, 13 June 2016 16:15 (15 minutes)

We present a study of the infrared emission spectra of Deuterium Cyanide (DCN) in the 450 to 850 wavenumbers range at 1370 K. Hydrogen Cyanide (HCN) was present as an impurity in the sample. The spectra were recorded using a Fourier transform spectrometer Bruker IFS 120 HR at theJustus- Liebig Universität, Giessen, Germany. A spectrum analysis software called SyMath developed by one of the authors (G. Mellau) was used to analyze the spectra and obtain improved spectroscopic constants. We report the ro-vibrational constants for the DCN molecule and compare them with a previous study published by E. Mӧllmann et al. [1] in 2002.

REFERENCES 1. E. Mӧllmann, A. G. Maki, M. Winnewisser, B. P. Winnewisser, W. Quapp, J. Mol. Spectrosc. 212, 22–31 (2002).

Primary author: Prof. PREDOI-CROSS, Adriana (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)

Co-authors: Mr MASHWOOD, Abdullah Al (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Prof. MELLAU, Georg (Physikalisch-Chemisches-In- stitüt, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 58, D-35392 Giessen, Germany); Ms ROZARIO, Hoimonti (Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada); Mr ESTEKI, Koorosh (Department of Physics and Astronomy, University of Lethbridge, Leth- bridge, AB, T1K 6R4 Canada)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 305 2016 CAP Congr … / Report of Contributions T2K

Contribution ID: 1289 Type: Invited Speaker / Conférencier invité

T2K Wednesday, 15 June 2016 13:15 (30 minutes)

T2K is a accelerator-based neutrino oscillation experiment operating in Japan, sending a muon (anti)neutrino beam produced at J-PARC to the Super-Kamiokande detector 295 km away. The neutrino oscillation process along the way, which results in some fraction of these muon neutrinos being detected as neutrinos of different flavors. T2K has reached several important milestones recently, including the definitive observation of muon neutrino to electron neutrino oscillation, the most precise measurement of the muon neutrino disappearance parameters, a joint analysis of these two modes towards the first constraint on the CP violating phase delta, and the first results from the experiment using an antineutrino beam. In this talk, we will report on the latest results from T2K and discuss the future prospects for T2K and beyond, including Hyper-Kamiokande

Primary author: JAMIESON, Blair (University of Winnipeg) Presenter: JAMIESON, Blair (University of Winnipeg) Session Classification: W2-4 Neutrino Physics (PPD-DNP-DTP) / Physique des neutrinos (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 306 2016 CAP Congr … / Report of Contributions Towards new discoveries with neu …

Contribution ID: 1290 Type: Invited Speaker / Conférencier invité

Towards new discoveries with neutrinos and dark matter Tuesday, 14 June 2016 08:30 (30 minutes)

Next generation experiments are poised to help answer fundamental questions about neutrinos and dark matter, but rely on a quantitative understanding of perturbative and nonperturbative QCD. I briefly review the status of experimental searches and theoretical calculations in searchers for lepton number and CP violation in the neutrino sector, and for WIMP dark matter direct detection.

Primary author: HILL, Richard (TRIUMF, Perimeter Institute and University of Chicago) Presenter: HILL, Richard (TRIUMF, Perimeter Institute and University of Chicago) Session Classification: T1-5 Neutrinoless Double Beta Decay II (PPD-DNP-DTP) / Double désintégration beta sans neutrino II (PPD-DPN-DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 307 2016 CAP Congr … / Report of Contributions Gradient Flow in the Ginzburg- …

Contribution ID: 1291 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Gradient Flow in the Ginzburg-Landau Model of Superconductivity Wednesday, 15 June 2016 09:45 (15 minutes)

The Ginzburg-Landau model for superconductivity provides a phenomenological description of superconductors near the critical temperature where a phase transition between superconducting and regular states occurs. The model has a single dimensionless free parameter, κ, that has a critical value separating type I and type II superconductors. Of particular interest are the vortex solutions (which are known to occur in type II superconductors) where we have some quantized magnetic flux through the material. We study the dynamics of the vortices using thegradient flow of the free energy. The gradient flow gives a system of coupled partial differential equations whose stationary points are given by the solutions to the Ginzburg-Landau equations. Far from equilibrium, the flow equations provide a description of the dynamics of a configuration with multiple vortices that evolves as quickly as possible to minimize the energy. Close to equilibrium the flow equations tell us about the stability of the vortices. We solve the equations numerically to study the interactions between vortices as well as the decay of larger vortices into multiple smaller ones. We find two different time-scales, a short time-scale where vortices form,anda longer time-scale where the vortices interact with eachother.

Primary author: MIKULA, Paul (University of Manitoba) Presenter: MIKULA, Paul (University of Manitoba) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 308 2016 CAP Congr … / Report of Contributions De-excitation of moderately excite …

Contribution ID: 1292 Type: Oral (Non-Student) / orale (non-étudiant)

De-excitation of moderately excited compound nucleus for heavy-ion collisions at intermediate energies Tuesday, 14 June 2016 17:45 (15 minutes)

Heavy-ion collisions at intermediate energies generate emission sources with a large distribution of excitation energies that can reach up to 10 MeV per nucleon. Evaporation models based on Weisskopf and Hauser-Feshback theories are used to de-excite these sources. Parameters used in evaporation models come from low energy experiments and must be extrapolated to de-excite high excitation energy emission sources. A better understanding of the dependence on excitation energy for these parameters is necessary. Fusion reactions give a way to study the de-excitation of emission sources with known excitation energy. The ISAC-II accelerator at TRIUMF was used to accelerate beams of 25Na, 25Mg, 20Ne and 22Ne. Experimental data was collected using the HERACLES multidetector for these reactions: 25Na+12C, 25Mg+12C at 9.2 MeV per nucleon and 20Ne+12C and 22Ne+12C at 11.7 MeV per nucleon. For nuclear reactions in this mass and energy range, reaction mechanisms include binary collisions and fusion-evaporation events. Compound nuclei produced by fusion in these reactions have an excitation energy between 2.5 and 3.3 MeV per nucleon. This excitation energy range is characteristic of emission sources produced atin- termediate energies. Experimental data is compared to simulations. Antisymmetrized Molecular Dynamics (AMD) is used to simulate the dynamical phase of the collision and GEMINI++ for the de-excitation. This analysis will constrain the excitation energy dependences in evaporation models.

Primary author: ST-ONGE, Patrick (Université Laval) Co-author: ROY, René (Université Laval) Presenter: ROY, René (Université Laval) Session Classification: T3-1 Hadronic Structure (DNP) / Structure hadronique (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 309 2016 CAP Congr … / Report of Contributions Universal Horizons in Collapsing …

Contribution ID: 1293 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Universal Horizons in Collapsing Reissner-Nordstrom Metrics Tuesday, 14 June 2016 09:00 (15 minutes)

An investigation of an analogous structure to an event horizon in theories which break Lorentz symmetry. Recent work has shown that in simple spacetimes Lorentz violating theories, such as Einstein-Aether or Horava-Lifshitz, singularities lie behind a universal horizon . In the limiting case, signals travel along an incompressible aether which results in an infinitely fast speed of propagation. Despite this property, a universal horizon always appears to form around a singularity disconnecting a region of spacetime from the larger universe. This talk will look at how these structures form during the collapse of a massive charged shell.

Primary author: MEIERS, Michael Co-authors: Mr SARAVANI, Mehdi (Perimeter Institute); AFSHORDI, Niayesh Presenter: MEIERS, Michael Session Classification: T1-8 General Relaivity (DTP) / Relativité générale (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 310 2016 CAP Congr … / Report of Contributions X-ray Speckle Measurements of a …

Contribution ID: 1294 Type: Oral (Non-Student) / orale (non-étudiant)

X-ray Speckle Measurements of a Shape Memory Alloy in Training Tuesday, 14 June 2016 09:15 (15 minutes)

The deformation of most types of metals involves an irreversible flow of crystallographic disloca- tions. This allows for their ductility. The deformation of a metallic shape memory alloy (SMA), on the other hand, is accommodated by a solid-solid phase transition. If deformed in the low- temperature martensitic phase, an SMA can be returned to its original shape by raising its temperature to the point where it changes back to its high-temperature parent phase. When the reverse occurs and the transformation is from parent to martensitic phase, an SMA goes from a high-symmetry to a low-symmetry state in which a number of martensitic variants are produced. Using in situ X-ray Photon Correlation Spectroscopy (XPCS), we monitored the self-organization of martensitic variants in a CuAlNi SMA during thermal cycling. In high-angle scattering geometry, this technique uses correlation from X-ray speckle to quantify the degree of crystallographic change in a material. Our measurements revealed enhanced reversibility in the organization of the martensitic variants as the system became trained during repeated thermal cycling.

Primary author: ROGERS, Michael (University of Ottawa) Co-author: SUTTON, Mark Presenter: ROGERS, Michael (University of Ottawa) Session Classification: T1-6 Nanostructured and Functional Nanomaterials (DCMMP-DIAP) / Nanomatériaux nanostructurés et fonctionnels (DPMCM-DPIA)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 311 2016 CAP Congr … / Report of Contributions Design of the first neutron produc …

Contribution ID: 1295 Type: Oral (Non-Student) / orale (non-étudiant)

Design of the first neutron production experiment using the new TRIUMF UCN beamline Wednesday, 15 June 2016 09:45 (15 minutes)

Our final goal is the measurement of the neutron electric dipole moment with ultracold neutrons (UCN). A new proton beamline for the UCN experiment was recently constructed at TRIUMF. UCNs will be produced by the superfluid He-II UCN source shipped from Japan. For the beam operation, sufficient radiation shields are necessary. We optimized the design of the shields andthe layout of the UCN guide pipe to minimize the UCN loss as well as the radiation leakage. This year, we will start the first beam commissioning. In the commissioning, we aim to precisely measure the cold neutron flux since it is important to gain a better understanding of the UCN production. Inthis presentation, we will report the design of the radiation shields and the first beam commissioning in the TRIUMF UCN beamline.

Primary author: Dr KIKAWA, Tatsuya (TRIUMF) Presenter: Dr KIKAWA, Tatsuya (TRIUMF) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 312 2016 CAP Congr … / Report of Contributions Evening and nighttime features of …

Contribution ID: 1296 Type: Oral (Non-Student) / orale (non-étudiant)

Evening and nighttime features of equatorial ionospheric F2 layer Wednesday, 15 June 2016 14:15 (15 minutes)

Oyedemi S. Oyekola Etobicoke, ON M8V 3C8, Canada Email:[email protected]

Abstract. We have used ionosonde observations recorded at Ibadan (7.4 degree North, 3.9 degree East) during the International Geophysical year (1957-58) to investigate evening and nighttime characteristic features of equatorial ionosphere during high solar flux and quiet magnetic conditions. We have also used International Reference Ionosphere model (IRI-2012) data. Our results show that the base of the ionosphere descends at a rate of -27.5 km/hr between 2000 LT and 0400 LT, whereas the observed bottomside peak of the ionosphere move down at a rate of -29.3 km/hr between 1900 and 0500 LT, while IRI2012 bottomside peak show -29.8 km/hr between 2000 LT and 0500 LT. The downward flow rate of plasma concentration between 1900 LT and0500LT and between 1800 LT and 0400 LT is approximately 0.040 electron per cubic metre per hour and 0.081 electron per cubic metre per hour, respectively for observed and for modeled NmF2. Month- by-month averaged altitudes (h’F, hmF2, and modeled hmF2) indicate significant local time variation. In addition, the month-by month variation indicates nighttime double crest of averaged peak height (hmF2) in the ionosonde measurements and in the IRI-2012 empirical model with a trough in June-August for data and In July for model. The monthly mean downward vertical drift velocities derived from local time variation of h’F and hmF2 together with global drift model essentially demonstrate much fluctuation. We found a “domed shaped” in modeled drift velocity, indicating equatorward plasma between April and September.

Primary author: Dr OYEKOLA, Oyedemi (Private) Presenter: Dr OYEKOLA, Oyedemi (Private) Session Classification: W2-3 Remote Sensing (DASP) / Détection à distance (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 313 2016 CAP Congr … / Report of Contributions Effect of temperature on the gener …

Contribution ID: 1297 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Effect of temperature on the generation of acoustic harmonics in a tissue-mimicking liquid Wednesday, 15 June 2016 13:30 (15 minutes)

In this study, the temperature dependence of acoustic harmonics generated by nonlinear ultrasound beam propagation in a mixture of 90% glycerol and 10% water (by volume) used as a tissue- mimicking liquid, was studied as a function of temperature from 26℃ to 46℃ at two different frequencies. Simulations were performed with a temperature-dependent Khokhlov–Zabolotskaya– Kuznetsov (KZK) nonlinear acoustic beam propagation model. Two single-element focused transducers with center frequencies of 5 and 13 MHz were used to transmit high pressure ultrasound signals. The ultrasound signals along the acoustic axis of each transducer were recorded usinga needle hydrophone. The axial components of the fundamental (p1), the second (p2) and thethird (p3) harmonics where calculated from the measured and simulated signals at temperatures of 26, 31, 36, 41 and 46℃ for both transmit frequencies. At the transmit frequency of 5 MHz, the peak values of the harmonics p1, p2, and p3, and their ratios p2/p1, p3/p1 increased by 35%, 189%, 573%, 113% and 396%, respectively in simulations and by 35% ± 2.5%, 223% ± 17%, 797% ± 38%, 138% ± 9% and 576% ± 31%, respectively in measurements as the temperature elevated from 26℃ to 46℃. The peak values of p1, p2, and p2/p1 increased by 256%, 1773% and 426%, respectively in simulations and by 205% ± 15%, 1411% ± 103%, and 394% ± 17%, respectively in measurements at 13 MHz for the same temperature range. Moreover, the p3 and p3/p1 increased by 597% and 311%, respectively in simulations and by 387% ± 31% and 204% ± 37%, respectively in measurements at 13 MHz as the temperature was increased from 36 to 46℃. The significant increase in the rate of generation ofhar- monics with temperature is due to the combined effects of increase in the nonlinearity parameter (B/A) and reduction in both the attenuation coefficient and the speed of sound with temperature in the medium.

Primary author: Mr MARAGHECHI, Borna (Department of Physics, Ryerson University, 350 Vic- toria Street, Toronto, Ontario, M5B 2K3, Canada)

Co-authors: Dr TAVAKKOLI, Jahan (Department of Physics, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada. Institute for Biomedical Engineering, Science and Technology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, M5B 1W8, Canada); Prof. KOLIOS, Michael C. (Department of Physics, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada. Institute for Biomedical Engineering, Science and Technol- ogy (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, M5B 1W8, Canada)

Presenters: Mr MARAGHECHI, Borna (Department of Physics, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada); Mr SHASWARY, Elyas (Dept. of Physics, Ryerson Univer- sity) Session Classification: W2-1 Biomechanics and Fluid Dynamics (DPMB) / Biomécanique et dynamique des fluides (DPMB)

September 29, 2021 Page 314 2016 CAP Congr … / Report of Contributions Effect of temperature on the gener …

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 315 2016 CAP Congr … / Report of Contributions Nonlinear dynamics of sensory foc …

Contribution ID: 1298 Type: Invited Speaker / Conférencier invité

Nonlinear dynamics of sensory focussing Tuesday, 14 June 2016 13:45 (30 minutes)

This talk will discuss a non-conventional neural coding task that may apply more broadly tomany senses in higher vertebrates. We ask whether and how a non-visual sensory system can focus on an object. We present recent experimental and modeling work that shows how the electric sense can perform such neuronal focussing. This sense is the main one used by weakly electric fishto navigate, locate prey and communicate in the murky waters of their natural habitat. We show that there is a distance at which the Fisher information of a neuron’s response to a looming and receding object is maximized, and that this distance corresponds to a behaviourally relevant one chosen by these animals. Strikingly, this maximum occurs at a bifurcation between tonic firing and bursting. We further discuss how the invariance of this distance to signal attributes can arise, a process that first involves power-law spike frequency adaptation. The talk will also highlight the importance of expanding the classic dual neural encoding of contrast using ON and OFF cells in the context of looming and receding stimuli.

Primary author: Prof. LONGTIN, Andre (Physics, U. Ottawa) Co-authors: MALER, Len (Medicine, U. Ottawa); CLARKE, Stephen E. (Medicine, U. Ottawa) Presenter: Prof. LONGTIN, Andre (Physics, U. Ottawa) Session Classification: T2-2 Nonlinear Dynamics (DPMB) / Dynamiques non linéaires (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 316 2016 CAP Congr … / Report of Contributions Feasibility of noninvasive tempera …

Contribution ID: 1299 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Feasibility of noninvasive temperature estimation using acoustic harmonics Tuesday, 14 June 2016 09:15 (15 minutes)

In this study, the feasibility of obtaining 2D temperature change maps was investigated by estimating the change in backscattered energy of the acoustic harmonics and comparing itwith the standard RF echo shift technique. A commercial high-frequency ultrasound scanner (Vevo® 770, Visualsonics Inc., Toronto, ON, Canada) with a 25-MHz center frequency wide-band single- element transducer (RMV-710B, f-number 2.1, 15 mm focal length) was used to transmit signals at 13 MHz. The experiments were performed on gel phantoms composed of 8% (by weight) gelatin. A1.6mm thick stainless steel needle was inserted in the gel phantom and hot water was circulated in the needle in order to increase the temperature of the phantom only locally around the needle. Hot water was circulated in the needle by using a peristaltic pump (Masterflex® L/S®, Cole Parmer, Chicago, IL). The needle was not placed within the imaging plane of the transducer inorderto minimize the RF signal distortion. The region of imaging was heated from 26℃ to 46℃. Theex- periments were performed with and without a water reservoir and a pulse dampener (Masterflex® L/S®, Cole Parmer, Chicago, IL) in the flow circuit in order to study the effect of motion onboth thermometry techniques. The water reservoir and the pulse dampener were used to eliminate vibration in the flow caused by the peristaltic pump. For the proposed method, the backscattered energies of the fundamental frequency (E1), the second (E2) and the third (E3) harmonics were obtained by squaring the envelope of the filtered RF echo signal at each harmonic. The standard echo shift technique was performed by taking cross- correlation between each two frames with a window size of 1×τ (0.07 μs) and an overlap of 50%. In the absence of vibration in the sample, we were able to obtain 2D temperature change maps using both techniques. However, in the presence of vibration, noninvasive thermometry was feasible only by using the backscattered energies of the harmonics.

Primary author: MARAGHECHI, Borna (Ryerson University) Co-authors: Dr TAVAKKOLI, Jahan (Department of Physics, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada. Institute for Biomedical Engineering, Science and Technology (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, M5B 1W8, Canada); Prof. KOLIOS, Michael C. (Department of Physics, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada. Institute for Biomedical Engineering, Science and Technol- ogy (iBEST), Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, M5B 1W8, Canada)

Presenter: Mr SHASWARY, Elyas (Dept. of Physics, Ryerson University) Session Classification: T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 317 2016 CAP Congr … / Report of Contributions Plasma motion in the equatorial io …

Contribution ID: 1300 Type: Oral (Non-Student) / orale (non-étudiant)

Plasma motion in the equatorial ionospheric F2-layer Tuesday, 14 June 2016 09:15 (15 minutes)

Oyedemi S. Oyekola Etobicoke, ON M8V 3C8 Canada Email: [email protected]

Abstract. The structure of evening and nighttime F-region vertical drift component of is vitalfor understanding the physics of the development of the occurrence of equatorial irregularities. In addition, postsunset ionospheric height has also been attributed as one of the most important factors for the occurrence of equatorial irregularities. We report vertical plasma drift velocities derived from the base (h’F) and the peak height (hmF2) of F-layer using 1-year of data obtained at Ibadan (Geog Long 3.9oE) during International Geophysical Year (1957-58) period for geomagnetic quiet- time and high solar activity conditions. We compared our results with International Reference Ionosphere 2012 model (IRI-2012). The results of this investigation include: (a) overall local- time characteristics of vertical drift between 1800 LT and 0600 LT are in good agreement for equinoxes, December, and June; (b) annual vertical drift derived from time variation of h’F and hmF2and the corresponding annual variation of h’F and hmF2 variation indicate low correlation (R = 0.30), while IRI-2012 model vertical drift and IRI-2012 model of hmF2 show fairly good correlation (R = 0.67); (c) regression analysis between time variation of h’F and Scherliess / Fejer model demonstrate correlation coefficient of approximately 0.74 (equinox), 0.85 (December), 0.57 (June) and0.74 (all-year), while that of time variation of hmF2 and IRI-2012 vertical velocities show 0.95 (equinox), 0.74 (December), 0.43 (June), and 0.74 (all-year); (d) plasma motion derived from the time rate of change of h’F and those of hmF2 are correlated at 0.94, 0.88, 0.63, and 0.90 for equinoxes, Decem- ber, June, and all-year, respectively; (e) the evening prereversal vertical drifts enhancement rage between ~20 - 45 m/s, ~18 - 46 m/s, ~20 – 50 m/s for time variation of h’F, hmF2, and Scherliess / Fejer model, respectively; (f) the corresponding peak altitudes vary between 430 - 540 km (h’F), 560 – 740 km ( hmF2), and 570 – 620 km (IRI-2012 model).

Primary author: Dr OYEKOLA, Oyedemi (Private) Presenter: Dr OYEKOLA, Oyedemi (Private) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 318 2016 CAP Congr … / Report of Contributions Vérification de l’équation de la fric …

Contribution ID: 1301 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Vérification de l’équation de la friction visqueuse Tuesday, 14 June 2016 19:04 (2 minutes)

Selon l’équation de la friction visqueuse, la force de friction entre deux surfaces séparées par une couche de fluide newtonien augmente proportionnellement avec la viscosité, l’aire de la surface de contact et la vitesse de déplacement relatif. La force de friction décroit avec l’épaisseur de la couche de fluide. L’expérience présentée vise à vérifier facilement (et avec un matériel limité) la relation entre l’aire de la surface de contact et la vitesse de déplacement, en gardant la force exercée, la viscosité et l’épaisseur de la couche de fluide constantes.

L’hypothèse posée est que la vitesse de déplacement sera inversement proportionnelle à l’aire de la surface de contact, ce qui est le comportement prévu par l’équation de la friction visqueuse.

Primary author: SMITH, Michaël (Cégep de Rivière-du-Loup) Presenter: SMITH, Michaël (Cégep de Rivière-du-Loup) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 319 2016 CAP Congr … / Report of Contributions Thermal Mediated Phase Transitio …

Contribution ID: 1302 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Thermal Mediated Phase Transition in Gauss-Bonnet Gravity Tuesday, 14 June 2016 09:15 (15 minutes)

In this work, we will be introducing so called “thermalons”and studying them in 5 dimentional Gauss-Bonnet Gravity. Thermalons can mediate phase transitions between different vacua in higher curvature gravity, potentially changing the asymptotic structure of the spacetime. Treating the cosmological constant as a dynamical parameter, we study these phase transitions in the context of extended thermodynamic phase space. We find that in the AdS to dS case, thermal AdScan only undergo a phase transition if it is below the Nariai limit. The solutions found beyond Nariai are interpreted as “unphysical”. We also find that thermal AdS space can undergo a phase transition to an asymptotically flat black hole geometry. In the context of AdS to AdS transitions, we comment on the similarities and differences between thermalon transitions and the Hawking-Page transition.

Primary authors: MANN, Robert (University of Waterloo); HENNIGAR, Robie; MBAREK, Saoussen (University of Waterloo)

Presenter: MBAREK, Saoussen (University of Waterloo) Session Classification: T1-8 General Relaivity (DTP) / Relativité générale (DPT)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 320 2016 CAP Congr … / Report of Contributions Investigating the nuclear structure …

Contribution ID: 1303 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Investigating the nuclear structure of 33Al through β− decay of 33Mg to probe the island of inversion Tuesday, 14 June 2016 14:30 (15 minutes)

Spectra resulting from the decay reaction of 33Mg were captured using the GRIFFIN γ-ray spectrometer coupled with the SCEPTAR β particle detector at the Canadian laboratory, TRIUMF. A radioactive beam of approximately 104 counts per second of 33Mg was delivered by the Isotope Separator and Accelerator (ISAC) facility. In the past, nuclei away from the valley of stability were experimentally found to have different ground state shell gaps and magic numbers than theones of those near stability. For example, N=20 is a stable magic number, however the neutron rich 32Mg is known to have a deformed configuration, while 34Si displays a normal configuration. In order to corroborate the theoretical predictions of this inversion mechanism, the nuclear structure of the intermediate 33Al should be known accurately and in detail. A few recent studies have given conflicting results for the branching ratios, spin and parity of the ground state of33Al.The end goal of this experiment is to determine a fine- grained, conclusive nuclear structure of 33Al through the decay spectroscopy of 33Mg. It is part of a larger experiment using Mg A=34 and 35 isotopes in efforts to map out the island of inversion around N=20. This presentation will focuson the preliminary results from the data processing and analysis done so far, and their significance.

Primary author: Ms ZIDAR, Tammy (University of Guelph) Presenter: Ms ZIDAR, Tammy (University of Guelph) Session Classification: T2-1 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 321 2016 CAP Congr … / Report of Contributions Inductively coupled plasma mass s …

Contribution ID: 1304 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Inductively coupled plasma mass spectrometry of photocorroding GaAs/AlGaAs nano-heterostructures in aqueous environments Wednesday, 15 June 2016 09:45 (15 minutes)

Photonic biosensors based on photocorrosion of GaAs/AlGaAs nano-heterostructures have been investigated as an attractive platform for low-cost and rapid detection of bacteria in aqueous environments.1, 2 Both GaAs and Al0.35Ga0.65As layers are unstable in an aqueous surrounding when illuminated with photons of energy exceeding bandgap of either of these materials. Among elements released to a biochip-containing cell, arsenic is of particular importance as the presence of this element could affect metabolism of some bacteria. 3,4 To investigate the rate of photocorrosion, we have employed an inductively coupled plasma mass spectrometry (ICP-MS) technique. For this purpose, a series of samples were prepared with small volumes of the product of photocorrosion collected from GaAs/Al0.35Ga0.65As nanoheterostructures photocorroding for the same periods of time, for up to 14 hours. The nanoheterostructures were excited with an LED light source operating at 660 nm wavelength and delivering ~ 20 mW/cm2 of uniform radiation on the surface of investigated samples. For comparison, a series of liquid samples were also analysed for GaAs/Al0.35Ga0.65As nanoheterostructures kept under dark conditions. The results indicate that the maximum amount of As released during biosensing photocorrosion is less than 20 ppb. We discuss dynamics of the photocorrosion process and the influence of the products of photocorrosion on the performance of GaAs/Al0.35Ga0.65As biosensing devices. 1. E. Nazemi, S. Aithal, W. M. Hassen, E. H. Frost and J. J. Dubowski, Sensors and Actuators B: Chemical 207, Part A, 556-562 (2015). 2. M. R. Aziziyan, W. M. Hassen, D. Morris, E. H. Frost and J. J. Dubowski, Biointerphases 11 (1), 019301 (2016). 3. P. I. Harvey and F. K. Crundwell, Minerals Engineering 9 (10), 1059-1068 (1996). 4. V. I. Podol’skaia, T. G. Gruzina, Z. P. Ul’berg, A. S. Sokolovskaia and N. I. Grishchenko, Prikl Biokhim Mikrobiol 38 (1), 57-62 (2002).

Primary author: AZIZIYAN, Mohammad Reza (Université de Sherbrooke) Co-author: Prof. DUBOWSKI, Jan J. (Université de Sherbrooke) Presenter: AZIZIYAN, Mohammad Reza (Université de Sherbrooke) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 322 2016 CAP Congr … / Report of Contributions Pressure-induced collapse of the J_ …

Contribution ID: 1306 Type: Oral (Non-Student) / orale (non-étudiant)

Pressure-induced collapse of the J_eff = 1/2 ground state in Li2IrO3 Thursday, 16 June 2016 09:30 (15 minutes)

The honeycomb lattice iridate Li2IrO3 displays a novel J_eff = 1/2 Mott insulating groundstate driven by strong 5d spin-orbit coupling effects. Due to a combination of J_eff = 1/2 magnetic moments, 90 degree Ir-O-Ir bond geometry, and honeycomb lattice crystal structure, Li2IrO3 represents one of the most promising candidates for the experimental realization of the Kitaev model. This exactly solvable quantum spin model features highly anisotropic, bond-dependent magnetic interactions, and supports an exotic spin liquid ground state. Although the observation of long- range magnetic order (Tn ∼ 15 K) excludes a “pure” Kitaev model description of Li2IrO3, there are many “extended” Kitaev models (including contributions such as isotropic Heisenberg exchange, further-neighbor interactions, symmetric off-diagonal exchange, and structural distortions) that may be relevant to this material. As such, there is considerable interest in potential strategies for “tuning” Li2IrO3 through the use of external perturbations.

We have employed a combination of x-ray powder diffraction (XPD), resonant inelastic x-ray scattering (RIXS), and x-ray absorption spectroscopy (XAS) techniques to investigate how the structural, electronic, and magnetic properties of Li2IrO3 evolve as a function of applied pressure. We find evidence of a pressure-induced structural phase transition at P ~ 3 GPa, which is accompanied by a dramatic increase in the non-cubic crystal electric field splitting. Furthermore, we observe a rapid drop in the XAS branching ratio, indicating that applied pressure drives Li2IrO3 out of the strong spin-orbit regime and leads to a collapse of the J_eff = 1/2 ground state.

Primary author: CLANCY, Patrick (University of Toronto) Co-authors: Dr GRETARSSON, Hlynur (Max Planck Institute for Solid State Research); Ms SEARS, Jennifer (University of Toronto); Dr KIM, Jungho (Argonne National Laboratory); Dr UPTON, Mary (Argonne National Laboratory); Dr CHEN, Ning (Canadian Light Source); Prof. GEGENWART, Philipp (University of Augsburg); Prof. DESGRENIERS, Serge (University of Ottawa); Dr MANNI, Soham (University of Augsburg); Dr DING, Yang (Argonne National Laboratory); Prof. SINGH, Yogesh (IISER Mohali); Prof. KIM, Young-June (University of Toronto) Presenter: CLANCY, Patrick (University of Toronto) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 323 2016 CAP Congr … / Report of Contributions Cryogenic Underground TEst facil …

Contribution ID: 1307 Type: Poster (Non-Student) / affiche (non-étudiant)

Cryogenic Underground TEst facility (CUTE) at SNOLAB Tuesday, 14 June 2016 19:02 (2 minutes)

A well shielded Cryogenic Underground TEst facility (CUTE) will be installed at SNOLAB with the goal to do performance tests, calibrations and background measurements with cryogenic dark matter detectors in support and preparation of the search for Weakly Interacting Massive Particles (WIMPs) with SuperCDMS at SNOLAB. This facility will also offer the opportunity for the European Underground Rare Event Calorimeter Array (EURECA), a collaboration including the European cryogenic dark matter search experiments EDELWEISS and CRESST, to demonstrate the compatibility of their detector design with the SuperCDMS infrastructure. This in turn opens the door for bringing EURECA detectors as additional payload into SuperCDMS to increase the physics reach of the experiment.

The primary component of CUTE will be a cryogen-free dilution refrigerator mounted withina drywell in the centre of a water tank shielding. In addition, lead and polyethylene shielding will be installed in two phases to further reduce the radioactive background level at the detectors. Meanwhile, in order to minimise microphonics noise in the signal, special care will be taken to measure and suppress the level of micro-vibrations within the cryostat.

Primary author: ZHANG, Xiaohe (Queen’s University) Presenter: ZHANG, Xiaohe (Queen’s University) Session Classification: PPD Poster Session with beer / Session d’affiches, avec bière PPD

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 324 2016 CAP Congr … / Report of Contributions Optical decoherence and spectral d …

Contribution ID: 1308 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Optical decoherence and spectral diffusion in an erbium-doped silica glass fiber featuring long-lived spin sublevels Tuesday, 14 June 2016 14:15 (15 minutes)

Rare-earth-ion (REI) doped materials offer unique spectroscopic properties, such as narrow optical linewidths, or long-lived shelving levels that allow for spectral tailoring of their inhomogeneously broadened absorption lines. Indeed, both these properties are required simultaneously in order to implement many of the potential applications of (REI) doped materials, such as optical quantum memories. REI-doped glasses come with some advantages compared to REI-doped crystal hosts such as a larger inhomogeneous broadening, benefitting large-bandwidth applications, but also disadvantages such as coherence times limited by two level systems. Here, we study the coherence properties of a weakly doped erbium silica glass fiber, motivated by our recent observation of efficient and long-lived Zeeman level storage in this material and due to its potential forappli- cations at telecommunication wavelengths. We present a model describing the magnetic field and temperature dependence of the coherence lifetime and determine the processes limiting the latter in different regimes. Furthermore, we investigate spectral diffusion, and find that it is magnetic field independent over long time scales. We highlight the observation of effective linewidths of the order of 1 MHz at low magnetic fields, where efficient spectral tailoring is possible.

Primary author: Mr FALAMARZI ASKARANI, Mohsen (Department of Physics and Astronomy, University of Calgary)

Co-authors: Dr SAGLAMYUREK, Erhan (Department of Physics and Astronomy, University of Calgary); Dr VEISSIER, Lucile (Department of physics and Astronomy, University of Calgary); Mr LUTZ, Thomas (Department of Physics and Astronomy, University of Calgary); Prof. TITTEL, Wolfgang (Department of Physics and Astronomy, University of Calgary)

Presenter: Mr FALAMARZI ASKARANI, Mohsen (Department of Physics and Astronomy, University of Calgary) Session Classification: T2-5 Photonics I: Applications (DAMOPC-DPP) / Photonique I : applications (DPAMPC-DPP)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 325 2016 CAP Congr … / Report of Contributions Spontaneous polarization of the …

Contribution ID: 1309 Type: Oral (Non-Student) / orale (non-étudiant)

Spontaneous polarization of the two-dimensional electron gas in WS2 Monday, 13 June 2016 13:45 (15 minutes)

Tungsten disulfide represents a class of 2D materials, transition metal dichalcogenides (TMDC), which exist as layers of atomic thickness with atoms organized in a honeycomb lattice. Similarly to graphene, in TMDCs the minimum of the conduction band and the maximum of the valence band are found at the K and K’ points in the Brillouin zone. Unlike graphene, these systems exhibit (i) a large direct bandgap, and (ii) strong spin-orbit interaction, which locks the spin and valley degrees of freedom of quasielectrons and quasiholes. The two-dimensional character of TMDCs results in a significant enhancement of Coulomb interactions. In Hartree-Fock (HF) approximation, this leads to a spontaneous valley polarization of the two-dimensional electron gas (2DEG) driven by electron-electron exchange. The valley polarization translates into spontaneously circularly polarized emission recently detected in magnetooptical measurements [1]. We present here a microscopic theory of the two-dimensional electron gas in WS2 . We develop an atomistic tight-binding (tb) model for single-quasielectron and quasihole states accounting for the spectral content of the subbands in terms of linear combinations of atomistic orbitals. The tb parameters are obtained from ab-initio calculations. The spin-orbit coupling and resulting reversal of the spin order of the conduction band are treated phenomenologically. This allows to formu- late the optical selection rules and calculate Coulomb interaction matrix elements atomistically. Using these elements, we calculate the HF phase diagram of the system of N interacting electrons in doped WS2 and demonstrate the formation of a valley polarized 2DEG state for low enough electronic densities, and a valley-singlet state for larger densities. The effect of correlation andQ minima are also included. The effect of a magnetic field is discussed in terms of Landau levelsof interacting massive Dirac Fermions. Finally, we relate the formation of the valley polarized state with magnetooptical experiments.

[1] T. Scrace, Y. Tsai, B. Barman, L. Schweidenback, A. Petrou, G. Kioseoglou, I. Ozfidan, M. Ko- rkusinski, and P. Hawrylak, Nature Nanotechnology 10, 603 (2015).

Primary author: Dr KORKUSINSKI, Marek (National Research Council) Co-authors: Ms SZULAKOWSKA, Ludmila (Physics Department, University of Ottawa); Mr BI- ENIEK, Maciej (Institute of Physics, Wroclaw University of Technology); Prof. HAWRYLAK, Pawel (Physics Department, University of Ottawa); Dr POTASZ, Pawel (Institute of Physics, Wroclaw Univer- sity of Technology)

Presenter: Dr KORKUSINSKI, Marek (National Research Council) Session Classification: M2-7 Carbon-based Nanomaterials (DCMMP-DSS) / Nanomatériaux à base de carbone (DPMCM-DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 326 2016 CAP Congr … / Report of Contributions Modelling seeded stimulated Brillo …

Contribution ID: 1310 Type: Poster (Non-Student) / affiche (non-étudiant)

Modelling seeded stimulated Brillouin scattering (SBS) and dispersion Tuesday, 14 June 2016 19:06 (2 minutes)

The dominant nonlinear effect within standard telecommunication fibers is stimulated Brillouin scattering (SBS). SBS can grow from a spontaneous process or it can be seeded for applications such as fiber amplifiers or fiber sensors. The spontaneous process occurs when a pumpsignal is scattered by thermal fluctuations within the fiber, resulting in a frequency downshifted Stokes signal. The seeded process involves injecting the counterpropagating pump and Stokes signals into their respective ends of the fiber and not relying on the random scattering from thermal noise for initiation. In applications that implement a seeded configuration, spontaneous generation is usually irrelevant and therefore SBS occurs primarily when the pump and Stokes overlap and drive stimulated scattering. Numerical models typically only incorporate attenuation andSBS within their equations while neglecting dispersion and other nonlinear effects. Under specific conditions it is possible for both pump and Stokes waves to travel significant distances, during which they may experience dispersion, before overlapping and interacting. We are presenting a hybrid numerical method that separates the propagation and interaction regimes within the fiber. The propagation of the pump and Stokes up to the interaction region is accomplished usinga split step method which allows attenuation, dispersion, and nonlinear effects other than SBStobe included. Within the interaction region dispersion, SBS, and other nonlinear effects are evaluated through an implicit Runga-Kutta integration. This method is uniquely suited to evaluate situations with large propagations with relatively short interaction regions, allowing the pump and Stokes pulses to be altered by dispersive effects before coupling and transferring energy through SBS.

Primary author: NEWMAN, Scott (Univeristy of Ottawa) Co-authors: DUPRAS, Gabriel (University of Ottawa); Dr RAMUNNO, Lora (University of Ot- tawa)

Presenter: NEWMAN, Scott (Univeristy of Ottawa) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 327 2016 CAP Congr … / Report of Contributions Characterization of Gold Nanocag …

Contribution ID: 1311 Type: Oral (Non-Student) / orale (non-étudiant)

Characterization of Gold Nanocages as Contrast Agents for Optoacoustic Imaging Thursday, 16 June 2016 13:30 (15 minutes)

Optoacoustic (OA) imaging is being investigated as a non-invasive technique for monitoring cancer therapeutics. It involves exposing tissues to nanosecond pulsed near infrared laser light. The optical energy is absorbed by tissue chromophores and converted into heat, leading to thermoelas- tic expansion, producing acoustic waves in the ultrasonic frequency range which are then detected by transducers. Gold nanocages (AuNCs) are plasmonic particles that are highly absorbing in the near infrared, are biocompatible and their surface chemistry can be functionalized to target specific cells. Hence there is great interest in the capability of AuNCs to enhance OA image contrast at depth. Yet there remains concern about the potential damage to the AuNC structure as a result of pulsed laser exposure. In this work, the stability of AuNCs following pulsed laser exposure was evaluated using absorption spectroscopy and transmission electron microscopy (TEM) imaging. Gold nanocage solutions, of varying concentration, were irradiated by laser pulses for 1 to 5 minutes using a reverse-mode optoacoustic imaging system (Seno Medical, San Antonio, TX). For direct illumination at 775 nm, the AuNCs demonstrated conformational changes including melting (pulse energy of 10 mJ) and fragmentation (pulse energy of 21 mJ) which led to a change in surface plasmon resonance. Op- tical absorption data demonstrated an 82.9 nm blue shift and 66.7 % decrease in peak amplitude following a 5 min exposure at 10 mJ. However, AuNC targets of varying particle concentrations placed in tissue mimicking phantom materials of varying background optical absorption (up to 4.0 cm-1) exhibited no damage following OA exposure, while improving image contrast by up to 300 %. This study demonstrates the utility of gold nanocages as contract agents for optoacoustics.

This research is supported by a NSERC Discovery Grant to W. Whelan

Primary author: WHELAN, Bill (University of Prince Edward Island) Co-authors: Dr BISSESSUR, Rabin (University of Prince Edward Island); Mr VEER SINGH, Shiv (University of Prince Edward Island)

Presenter: WHELAN, Bill (University of Prince Edward Island) Session Classification: R2-4 Biophotonics (DPMB-DAMOPC) / Biophotonique (DPMB-DPAMPC)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 328 2016 CAP Congr … / Report of Contributions Tune-out Wavelengths and Polariz …

Contribution ID: 1312 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Tune-out Wavelengths and Polarizability for the Helium 1s2s 3S State.∗ Monday, 13 June 2016 11:30 (15 minutes)

This paper is part of a joint theoretical/experimental project to test QED by measuring the tune-out wavelength of helium near the 413 nm line where the frequency-dependent polarizability vanishes [1]. As a first strep, we calculate a high-precision value for the static polarizability definedin the nonrelativistic limit as the second-order perturbation energy due to the perturbation V = eF r cos θ where F is the electric field strength. For a two electron atom such as helium, high precision results are obtained by use of an explicitly correlated Hylleraas basis set to represent the complete set of intermediate states. We also include for the first time relativistic corrections due to the Breit interaction terms proportional to 4 4 3 p1 + p2, δ(r12), δ(r1) and the orbit-orbit interaction [2]. For the 2 S state of helium, we find a relativistic contribution to the polarizability with finite nuclear mass corrections included of − 3 0.098 765770(9) a0 atomic units, where α is the fine structure constant.\\[0pt] [1] B.M. Henson et al. Phys.\ Rev.\ Lett.\ {\bf 115}, 043004 (2015).\newline [2] K. Pachucki and J. Sapirstein, Phys. Rev. A \textbf{63}, 012504, (2000).\newline ∗Research supported by NSERC.

Primary author: Mr MANALO, Jacob (University of Windsor) Co-author: Dr DRAKE, Gordon (University of Windsor) Presenter: Mr MANALO, Jacob (University of Windsor) Session Classification: M1-7 Atomic and Molecular Spectroscopy and Precision Measure- ments I (DAMOPC) / Spectroscopie atomique et moléculaire et mesures de précision I (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 329 2016 CAP Congr … / Report of Contributions Mass Measurements with TITAN: …

Contribution ID: 1313 Type: Invited Speaker / Conférencier invité

Mass Measurements with TITAN: Capabilities and Progress Wednesday, 15 June 2016 15:15 (30 minutes)

Nuclear and atomic masses factor into almost every branch of physics. In nuclear physics and nuclear astrophysics, masses contribute to our understanding of fundamental symmetries and explosive nucleosynthesis, just to name a few applications. TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN) has been built to study exotic, short- lived nuclei. The TITAN facility consists of three main ion traps: a gas-filled RadioFrequency Quadrupole (RFQ) trap that cools and bunches continuous beam from TRIUMF’s ISAC facility,an Electron Beam Ion Trap (EBIT) which charge breeds ions in advance of their mass measurement, and a Measurement PEnning Trap (MPET) which makes precision mass measurements via the Time-of-Flight ion cyclotron resonance method. In addition to the ion traps currently in operation, TITAN is commissioning two additional ion traps to assist in the goal of precision mass measurements. The energy spread of the charge bred ion bunch coming from the EBIT adversely affects the precision of mass measurements in MPET. A new Cooler PEnning Trap (CPET) seeks to cool highly charged ion bunches via the Coulomb interaction with a simultaneously trapped electron plasma. The cooled iopn bunch can then be sent to MPET for precision mass measurement. TITAN’s other trap is a Multi-Reflection Time-of-Flight mass spectrometer (MR-ToF) which is designed to provide a mass resolving power of greater than 1 part in 105 (an improvement of more than an order of magnitude over ISAC’s mass separator). Both CPET and the TITAN MR-ToF are currently being tested offline before being integrated into the TITAN beamline. Recent upgrades to TITANs capabilities, such as the ability of the EBIT to be used for isobaric separation, status of the MR-ToF and CPET, as well as updates on the state of mass measurements with TITAN will be discussed.

Primary author: Dr LASCAR, Daniel (TRIUMF) Co-authors: Dr GALLANT, Aaron (TRIUMF); Mr FINLAY, Andrew (TRIUMF/UBC); Dr BARQUEST, Brad (TRIUMF); Mr KOOTTE, Brian (TRIUMF/U of Manitoba); Dr BABCOCK, Carla (TRIUMF); Prof. ANDREOIU, Corina (TRIUMF/SFU); Mr SHORT, Devin (TRIUMF/SFU); Mr LEISTENSCHNEIDER, Erich (TRIUMF/UBC); DILLING, Jens (triumf/UBC); Mr GOOD, Mel (TRIUMF); Dr REITER, Pascal (TRIUMF/GSI/U. of Giessen); Mr KLAWITTER, Renee (TRIUMF/Max Plank Institute) Presenter: Dr LASCAR, Daniel (TRIUMF) Session Classification: W3-1 Nuclear Structure III (DNP) / Structure nucléaire III (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 330 2016 CAP Congr … / Report of Contributions Shape dependence of two-cylinder …

Contribution ID: 1314 Type: Oral (Non-Student) / orale (non-étudiant)

Shape dependence of two-cylinder Renyi entropies for a free boson lattice field theory Thursday, 16 June 2016 14:30 (15 minutes)

We study the bipartite von Neumann and α = 2 Renyi entanglement entropies for a system of free bosons put on a torus cut into two cylinders. The torus is formed out of the L × L square lattice, and the entropy is supposed to scale as S = aL + cγ(LA/L) + ··· , with LA being the size of the partitioned region. c and a are some constants and the function γ(LA/L) that is not known analytically is supposed to reflect some universality. We compute γ(LA/L) numerically and compare the results to several candidate functions derived from Quantum Lifshitz model, anti de-Sitter gravity in 3 + 1 dimensions, and an Extensive Mutual Information model. Using lattices of different size, we explore the finite-size-scaling behaviour of the residuals for each fit, to attempt to discern which function most effectively describes the thermodynamic limit of the free boson system.

Primary authors: COOK, Caleb (Perimeter Institute for Theoretical Physics); DALIDOVICH, Denis (Perimeter Institute for Theoretical Physics); LANTAGNE-HURTUBISE, Etienne (Perimeter Institute for Theoretical Physics); HAYWARD-SIERENS, Lauren (Perimeter Institute for Theoretical Physics); CHO- JNACKI, Leilee (Perimeter Institute for Theoretical Physics); MELKO, Roger (University of Water- loo); VLAAR, Tiffany (Perimeter Institute for Theoretical Physics) Presenter: DALIDOVICH, Denis (Perimeter Institute for Theoretical Physics) Session Classification: R2-5 Quantum Information and Quantum Optics (DCMMP-DAMOPC) / Information quantique et optique quantique (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 331 2016 CAP Congr … / Report of Contributions Miniature Plasma Imager: A new …

Contribution ID: 1315 Type: Poster (Non-Student) / affiche (non-étudiant)

Miniature Plasma Imager: A new tool for in situ ionospheric and auroral investigations from nanosatellites Tuesday, 14 June 2016 19:02 (2 minutes)

Development has commenced at the University of Calgary on a prototype next-generation ion imager called the Miniature Plasma Imager (MPI). The work is being performed under contract to the Canadian Space Agency as part of its Space Technology Development Program. The Miniature Plasma Imager is designed to be an smaller Thermal Ion Imager, which is the sensor used onthe Swarm Electric Field Instrument to measure ion drift and temperature in the F region ionosphere. Having similar ion focusing optics, MPI replaces the high-voltage (5 kV to 8 kV) TII electro-optical detector with an ion-sensing IonCCD(TM) running at 24 V. We present an overview of the new instrument, describe its anticipated measurement performance (velocity resolution and accuracy), and discuss its application to multi-point ionospheric and auroral physics studies using nanosatel- lite (<10 kg) orbital platforms.

Primary author: BURCHILL, Johnathan (University of Calgary) Co-author: Mr WEI, Chenyue (Carl) (University of Calgary) Presenter: BURCHILL, Johnathan (University of Calgary) Session Classification: DASP Poster Session with beer / Session d’affiches avec bière DPAE

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 332 2016 CAP Congr … / Report of Contributions Vérification de la loi de Poiseuille

Contribution ID: 1316 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Vérification de la loi de Poiseuille Tuesday, 14 June 2016 19:06 (2 minutes)

Selon la loi de Poiseuille, le débit d’écoulement d’un fluide dans une conduite cylindrique est proportionnel au gradient de pression et au rayon de la conduite élevé à la puissance quatre. Il est aussi inversement proportionnel à la viscosité du fluide. La loi de Poiseuille fut d’abord établie en lien avec l’étude de l’écoulement du sang dans les veines et les artères. L’expérience présentée vise à vérifier facilement (et avec un matériel limité) la relation entrele débit d’écoulement et la longueur de la conduite, en gardant la différence de pression, le rayon de la conduite et la viscosité constantes.

L’hypothèse posée est que le débit d’écoulement sera inversement proportionnel à la longueur de la conduite, ce qui est le comportement prévu par la loi de Poiseuille.

Primary author: LIRETTE, Frédéric (Cégep de Rivière-du-Loup) Presenter: LIRETTE, Frédéric (Cégep de Rivière-du-Loup) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 333 2016 CAP Congr … / Report of Contributions Development of a fast and robust …

Contribution ID: 1317 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Development of a fast and robust sequential method for uranium and thorium decay series quantification in environmental samples Wednesday, 15 June 2016 10:15 (15 minutes)

Easily determine the radioactive behavior of a sample becomes one of the challenge of the industrialized world. Due to the enhancement of nuclear and mining activities, it is relevant to quantify the radioactivity effect of these activities and especially for nuclear disaster such as Fukushima within a short time. It currently exists a lot of method to analyse the most impact radionuclides of the uranium and thorium decay series,[1] however they are not sequenced or they are time consuming[2] and not reliable with less of 70% recovery[3]. Moreover, most currently used methods are only relevant for water samples and cannot afford to analyse all environmental matrices due to high salt concentration and heterogeneity. In order to do so, we propose to develop an easy, fast, reliable and robust method to fractionate and analyse, in a raw material, impact radionuclides of uranium and thorium decay series which are uranium, thorium, polonium, radium and lead.

[1] Porcelli, D. & Swarzenski, P. W. The Behavior of U- and Th-series Nuclides in Groundwater. Rev. Mineral. Geochemistry 52, 317–361 (2003).[2] Lozano, J. C., Tomé, F. V., Rodriguez, P. B. & Prieto, C. A sequential method for the determination of 210Pb, 226Ra, and uranium and thorium radioisotopes by LSC and alpha-spectrometry. Appl. Radiat. Isot. 68, 828–831 (2010) [3] Oliveira, J. M. & Carvalho, F. P. Sequential extraction procedure for determination of uranium, thorium, radium, lead and polonium radionuclides by alpha spectrometry in environmental samples. Czechoslov. J. Phys. 56, 545–555 (2006).

Primary author: Ms DALENCOURT, Claire (Chemistry Department, Laval University) Co-author: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Presenter: Ms DALENCOURT, Claire (Chemistry Department, Laval University) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 334 2016 CAP Congr … / Report of Contributions Development of a tapered fiber probe

Contribution ID: 1318 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Development of a tapered fiber probe Tuesday, 14 June 2016 13:30 (15 minutes)

Recent advancements in nanotechnology have attracted worldwide attention. The potential applications of metallic nanoparticles, especially gold nanoparticles or nanorods (or gold colloids), are very promising and attractive. The unique optical, chemical, and physical properties ofgold nanoparticles make them an ideal candidate for biochemical sensing, medical diagnostics/therapeutics, imaging contrast agents, and photonic devices. The Photonics Research Group at Lakehead Univer- sity is working towards the development of a photonics device to detect chemicals (e.g., proteins) using Surface-Enhanced Raman Spectroscopy (SERS). We will present the design of a probe using an optical fiber and its application in sensing.

The research was financially supported by Natural Sciences and Engineering Research Councilof Canada (NSERC) and Agrium Inc.

Primary authors: Mrs SHARMA, Chetna (Lakehead University); Dr DAS, Gautam (Lakehead University); Mr TREVISANUTTO, Joshua (Lakehead University) Presenter: Mr TREVISANUTTO, Joshua (Lakehead University) Session Classification: T2-2 Nonlinear Dynamics (DPMB) / Dynamiques non linéaires (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 335 2016 CAP Congr … / Report of Contributions Low-Frequency to High- …

Contribution ID: 1319 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Low-Frequency to High-Frequency Transition of an Atmospheric Pressure Helium Dielectric Barrier Discharge Tuesday, 14 June 2016 16:30 (15 minutes)

Dielectric barrier discharge is a well-known device for its diffuse discharge capability at atmospheric pressure. In a plane parallel configuration (2 mm gas width) with solid alumina dielectrics on each electrode, a diffuse discharge will occur under proper conditions. It is the case whenthe driving voltage is a sinusoidal waveform oscillating at 25 kHz and the feed gas is a Penning mixture of helium with ppms of N2. These conditions give rise to a glow discharge (APGD) and istypical of the low-frequency range (LF). In the same conditions, when the driving frequency is oscillating at 13.56 MHz, in the high-frequency range (HF), the discharge is no longer pulsed in nature but rather a continuous plasma fluctuating between two oscillating sheaths. This behavior is typical of capacitively coupled radio-frequency discharge (CCRF) in the α mode. The aim of this paper is to investigate the transition through which the discharge shiftsfromthe LF glow discharge to the HF discharge in the RF-α mode. Phase-locked imaging is used as the main diagnostic. On the one hand, the discharge is no longer in a purely glow discharge mode at frequencies above 100 kHz. On the other hand, above 1 MHz, the plasma is clearly in the RF-α mode when the applied voltage is sufficiently high. In addition, for intermediate frequencies, inthe medium frequency range (MF, defined as 0.3-3 MHz), the Ω mode can be sustained at low applied voltage. This mode, where electron heating in the bulk is the main power transfer mechanism, can only be sustained between 100 kHz and 5 MHz. Electrical measurements indicate that this discharge mode is always sustained at a power density of the order of 0.1 W/cm3.

Optical emission spectroscopy is used to compare the discharge modes. While the LF glow discharge and the HF discharge in the RF-α mode display fairly similar spectra, the spectrum of the Ω mode occurring in the MF range displays strongly different emissions. In fact, the ratio of he- + lium emissions over impurities (mainly OH, N2 and N2 ) is much lower in this latter mode than in the formers. This suggests that the ratio of high-energy electrons over metastable atom density (impurities mainly depend on helium metastable atoms density) is higher in both the LF and HF discharges. In other words, the electron temperature is expected to be significantly lower in the Ω mode occurring in the MF range.

Primary author: BOISVERT, Jean-Sébastien (Université de Montréal) Co-authors: Dr MASSINES, Françoise (Laboratoire PROMES-CNRS); Prof. MARGOT, Joëlle (Uni- versité de Montréal)

Presenter: BOISVERT, Jean-Sébastien (Université de Montréal) Session Classification: T3-2 Plasma Physics and Applications (DPP) / Applications et physique des plasmas (DPP)

Track Classification: Plasma Physics / Physique des plasmas (DPP)

September 29, 2021 Page 336 2016 CAP Congr … / Report of Contributions The Translocation Time through a…

Contribution ID: 1320 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The Translocation Time through a Nanopore with an Internal Cavity is Minimal for Polymers of Intermediate Length Wednesday, 15 June 2016 13:45 (15 minutes)

Nanopores are of great interest in the study of biological systems and in the development of new scientific and industrial tools. Synthetic nanopores, constructed from silicon wafers or similar materials, show great potential for detecting, sorting, and manipulating polymers rapidly and efficienctly. Traditional nanopores are short cylindrical holes in a membrane, whose radii and lengths are comparable. The average translocation time of polymer electrically forced to pass through such pores isamono- tonic function of polymer length. In the present work, we conceive of a novel nanopore design, in which a relatively large hollow cavity is included between two traditional nanopores. Using numerical simulations of a model system, the average polymer translocation time through this new geometry is found to be a complicated function of length and driving force. For moderate driving forces, translocation time is minimal for some critical polymer length, with shorter chains slowed by entropic trapping, and longer chains slowed by virtue of their length. For larger driving forces, the effects of entropic trapping are suppressed as the chain is forced against the far side of the cavity. As such, translocation time is almost constant below the critical polymer length. Furthermore, the rich dynamics of this system can be explained by a simple free energy description. This model accurately predicts the relationship between the critical polymer length of thesystem and the strength of the driving force with no free parameters. These results suggest that the new pore geometry could be used as a highly selective filter forex- tracting polymers from a solution, behaving as a band-pass filter for moderate driving forces and a low-pass filter for strong driving forces. Further, the filter threshold can be tuned dynamically using the relation predicted by the freeen- ergy model. Thus, this device opens up new applications for nanopores within nanofluidic devices.

Primary authors: Prof. DE HAAN, Hendrick W. (University of Ontario Institute of Technology); Mr MAGILL, Martin (University of Ontario Institute of Technology)

Presenter: Mr MAGILL, Martin (University of Ontario Institute of Technology) Session Classification: W2-1 Biomechanics and Fluid Dynamics (DPMB) / Biomécanique et dynamique des fluides (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 337 2016 CAP Congr … / Report of Contributions Towards sequential and automated …

Contribution ID: 1321 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Towards sequential and automated CPE methods to pre-concentrate and extract radionuclides from environmental matrices Tuesday, 14 June 2016 19:02 (2 minutes)

It can be challenging to measure the concentration of radionuclides using mass spectrometry when these concentrations are in the “parts per trillion” range. Yet, radionuclides can cause health problems even at these low concentrations, especially alpha-emitting radionuclides with a short half- life. This is why we are developing a methods to rapidly extract and pre-concentrate radionuclides at the ultra-trace level in environmental matrices to be able to measure their concentration. The method consists of a cloud point extraction (CPE) of target radionuclides coupled withanICP- MS. The CPE system developed is composed of a mixture of non-ionic (Triton X-114, Triton X-100) and ionic (cetyltrimethylammonium bromide) surfactants. Targeted radionuclides are extracted by forming stable complexes with chelating agents chosen for their selective behavior towards one or a few radionuclides. The complexes formed are electronically neutral and tend to go inside the micelles, in the hydrophobic environment. By separating the micelles from the aqueous phase of the solution, we achieve the pre-concentration and the extraction of the targeted radionuclides. In this work we will present our progress regarding the use of sequential CPE for the separation and preconcentration of uranium and fission products (lanthanides). The automation of theCPE system to extract two or more target elements from the same sample using two different cloud point extraction systems will also be discussed.

Primary author: Mr TREMBLAY, Anthony (Chemistry Department, Laval University) Co-author: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Presenter: Mr TREMBLAY, Anthony (Chemistry Department, Laval University) Session Classification: DIMP Poster Session with beer / Session d’affiches, avec bière DPIM

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 338 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Delayed Coinci …

Contribution ID: 1322 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

**WITHDRAWN** Delayed Coincidence Analysis to Tag Alpha Decays from Radon in The DEAP-3600 Experiment Wednesday, 15 June 2016 13:45 (15 minutes)

The DEAP-3600 experiment, located 6800 feet underground at the SNOLAB facility, uses 3.6tons of liquid argon for a direct detection search for weakly-interacting massive particle (WIMP) dark matter. The target sensitivity to the spin-independent WIMP-nucleon cross section is10−46 cm2 at 100 GeV/c2 WIMP mass. The success of dark matter experiments depends critically onunder- standing and reducing any possible sources of background. In the DEAP-3600 experiment radon (Rn) daughters decaying on the surface of the detector and in the argon may mimic the expected dark matter signal. Here we will present an analysis using time and energy to identify andtag such radioactive decays. This talk will discuss the results from this analysis method, appliedto various stages of the DEAP-3600 experiment, to determine the Rn activity and to perform basic calibrations.

Primary author: Mr GIAMPA, Pietro (Queen’s University) Presenter: Mr GIAMPA, Pietro (Queen’s University) Session Classification: W2-8 Cosmic Frontier: Dark Matter IV (PPD) / Frontière cosmique: matière sombre IV (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 339 2016 CAP Congr … / Report of Contributions Nonlinear Dynamics for the Trans …

Contribution ID: 1323 Type: Oral (Non-Student) / orale (non-étudiant)

Nonlinear Dynamics for the Translocation of fd Virus through Nanopores: Euler Buckling at the Nanoscale Tuesday, 14 June 2016 13:15 (15 minutes)

The translocation of biopolymers such as DNA through nanopores has received a great dealofat- tention due to applications such as sequencing DNA or sorting polymers by size. In this presentation I will discuss results from a joint experimental-theoretical project examining the translocation of the filamentous fd virus through nanopores. The fd virus is relatively stiff with a persistence length on the order of its contour length. This is in contrast to typical translocation scenarios where the polymer is many Kuhn lengths in size. Experimental results for fd uncover complex nonlinear dynamics: the translocation speed increases superlinearly with the driving force, the mobility is force-dependent and transitions between scaling regimes with increasing virus length, and the variation in the translocation velocity increases dramatically with increasing driving force. All of these results can be explained by a simple physical picture in which the virus mechanically buckles as it is pushed through the pore and into the fluid on the opposite side of the membrane. This model is explored via Langevin dynamics simulations of the system. Consistent agreement between simulations and experiments verifies the underlying physics thus giving insight into hereto- fore unexplained experimental results. These findings demonstrate that for the translocation of semi-flexible polymers, the behaviour of the trans portion of the polymer — which is ignoredin standard models — has a large impact on the translocation dynamics.

Primary author: DE HAAN, Hendrick (University of Ontario Institute of Technology) Presenter: DE HAAN, Hendrick (University of Ontario Institute of Technology) Session Classification: T2-2 Nonlinear Dynamics (DPMB) / Dynamiques non linéaires (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 340 2016 CAP Congr … / Report of Contributions Changes in ocular properties can b …

Contribution ID: 1324 Type: Oral (Non-Student) / orale (non-étudiant)

Changes in ocular properties can be predicted from retinal blur due to defocus during emmetropization in the chick eye Thursday, 16 June 2016 13:45 (15 minutes)

INTRODUCTION: Emmetropization is an active process involving retinal feedback and is likely driven by the amount of defocus of the image on the retina. Normal emmetropization has long been assumed to result in zero refractive error, but recently this has been questioned. We wish to objectively determine, in chicks, when emmetropization is complete and how much retinal blur due to defocus remains. Secondly, we examine ocular properties during emmetropization to determine which changes are proportional to the retinal blur due to defocus. METHODS: From literature values including work in our lab, functions were fit to MOR (mean ocular refraction or spherical equivalent) and optical axial length (OAL; anterior cornea to anterior retina) vs. age. Dioptric length (K’) and eye power (F) were derived up to day 75 using our previously reported method to calculate equivalent eye power. Cornea and lens powers were also calculated. Pupil size data were used to calculate the angular and linear retinal blurs (EB and LRB) due to defocus. The relationships among parameters and between retinal blur and ocular parameters were examined. RESULTS: Eye power and K’ decrease exponentially with age at slightly different rates until power and K’ reach almost equal values about day 35. Subsequently, power and K’ decrease almost identically with age. This gives an initial rapid exponential decrease in MOR, which reaches a relatively stable value of 0.8 D of hyperopia about day 30 to 40 The completion of emmetropization is defined asthe time point beyond which MOR remains relatively stable. After emmetropization is complete, MOR and EB remain almost constant and LRB is almost constant or increases slowly from about day 60, suggesting a differing growth pattern following emmetropization. The radius of the bluronthe retina is larger than the cone resolution prior to completion of emmetropization, and approaches cone resolution as emmetropization proceeds. Because of its exponential decrease with age during emmetropization, the rate of change of MOR (D/day) varies linearly with MOR. However, it also varies approximately linearly with retinal blur (both EB and LRB; p<0.001) before and after emmetropization is complete. During emmetropization, the rate of increase of OAL decreases, as a linear function of decreasing retinal blur (EB p=0.0009 and LRB p=0.004). This relationship breaks down around the time that emmetropization is complete (~day 30). Similarly, during emmetropization, the rate of increase in corneal radius varies linearly with retinal blur (EB p=0.0008 and LRB p=0.004) and the rate of decrease in lens power varies linearly with the rate of change of retinal blur (EB p=0.001 and LRB p=0.005). As expected from the above results, the rate of change of corneal radius (p<0.0001) and lens power (p<0.0001) are proportional to the rate of change of OAL during but also following emmetropization. CONCLUSIONS: Concurrent variations in eye power and length combine to produce the smaller, more rapid changes in MOR as a function of age during normal emmetropization. The eye is slightly hyperopic at the time point when emmetropization is complete. This time point can be defined objectively. Emmetropization appears to produce an active reduction of angular retinal blur to a value close to cone resolution.

In chick during emmetropization, the rates of ocular elongation, corneal radius increase and lens

September 29, 2021 Page 341 2016 CAP Congr … / Report of Contributions Changes in ocular properties can b …

power decrease are proportional to the size of the angular defocus blur on the retina until the blur approaches cone resolution and emmetropization is complete. Beyond this time, MOR is relatively stable, and eye growth is slower to day 75. Many of these results are consistent with findings during emmetropization in infants but here we show a linear dependence on retinal blur.

Primary author: CAMPBELL, Melanie (University of Waterloo) Co-authors: Prof. IRVING, Elizabeth (University of Waterloo); Ms KISILAK, Marsha (University of Waterloo); Ms SHAO, Zheng (University of Waterloo) Presenter: CAMPBELL, Melanie (University of Waterloo) Session Classification: R2-4 Biophotonics (DPMB-DAMOPC) / Biophotonique (DPMB-DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 342 2016 CAP Congr … / Report of Contributions Separation and analysis of Sr-90 a …

Contribution ID: 1325 Type: Oral (Non-Student) / orale (non-étudiant)

Separation and analysis of Sr-90 and Zr-90 for nuclear forensic applications Wednesday, 15 June 2016 09:30 (15 minutes)

In this work, a technological development to determine the age of radioactive strontium sources through the [Zr-90]/[Sr-90] ratio using mass spectrometry and liquid scintillation to quantify both isotopes is presented. Because Sr-90 and Zr-90 are isobaric interferences in mass spectrometry, a radiochemical separation to isolate Zr-90 has been shown to be mandatory prior to analysis. Four commercial resins (AG50W-X9, Dowex1-X8, Sr and DGA resins) were tested to isolate Zr-90 from Sr-90. Best performance was observed for the DGA resin, including recoveries higher than 99% for Zr-90. DGA has also demonstrated to be the faster approach and the most efficient not only to eliminate isobaric interferences from Sr-90, but also from Y-90, potentially present in samples containing high levels of radioactivity.

The use of ICP-MS/MS using oxygen as a reaction gas in the Octopole Reaction system (ORS)was also evaluated as a potential approach to reduce isobaric interferences at m/z 90. While some level of decontamination was achieved, the coupling of this instrumental configuration with a pre-plasma separation was deemed necessary.

Primary author: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Co-author: Ms ZATTONI, Ana Paula (Chemistry Department, Laval University) Presenter: Prof. LARIVIERE, Dominic (Chemistry Department, Laval University) Session Classification: W1-6 Instrumentation for the Detection of Low-Level Radioactivity (DIMP) / Appareillage de détection de radioactivité de faible intensité (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 343 2016 CAP Congr … / Report of Contributions Atomic Force Microscopy Study of …

Contribution ID: 1326 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Atomic Force Microscopy Study of the Effect of Poly(aspartic acid) on Calcium Oxalate Monday, 13 June 2016 11:30 (15 minutes)

Kidney stone disease is a urological disorder that affects 10% of the human population, resulting in considerable pain and potential renal failure. It is known that certain macromolecules, such as osteopontin (OPN), can limit the formation of calcium oxalate monohydrate (COM) crystals, the major constituent of kidney stones. An explanation for this effect is provided by the Cabrera- Vermilyea (C-V) model, which proposes that trace amounts of adsorbed impurities can pin growth steps, forcing them to curve, thereby reducing the effective supersaturation. This “kinetic inhibition” is distinct from the well-known freezing-point depression, in which the thermodynamic phase diagram is altered by the presence of impurities. However, microscopic evidence for the C-V model is limited. We have been using the atomic force microscope (AFM) to investigate COM crystallization in situ in the presence of OPN, peptides derived from OPN, and synthetic macromolecules such as poly(aspartic acid) (poly-ASP). The presence of poly-ASP causes a rapid change in growth-step morphology and drastically slows the growth. At low poly-ASP concentrations, we see a dependence on crystallographic direction, with one direction displaying strong pinning while others continue to grow. This results in “finger-like” features at a threshold concentration that depends strongly on the polymer length. In this talk, we model these growth features using inhibitor diffusion, adsorption to growth steps, and incorporation into the growing crystal.

An understanding of the microscopic details of calcium oxalate crystallization is not only important for the development of potential therapies for kidney stone disease, but will also provide insights into the inhibition mechanism that will be transferable to other natural and commercial crystallization systems.

Primary author: Ms WIJESEKARA, Himasha (University of Western Ontario) Co-authors: Dr HARVEY, Goldberg (University of Western Ontario); Dr HUNTER, Graeme (Uni- versity of Western Ontario); Dr HUTTER, Jeff (University of Western Ontario) Presenter: Ms WIJESEKARA, Himasha (University of Western Ontario) Session Classification: M1-2 Material Growth and Processing (DCMMP) / Croissance et traitement des matériaux (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 344 2016 CAP Congr … / Report of Contributions Plasmonic metasurface to enhance …

Contribution ID: 1327 Type: Oral (Non-Student) / orale (non-étudiant)

Plasmonic metasurface to enhance difference frequency generation for THz radiation Wednesday, 15 June 2016 10:00 (15 minutes)

Plasmonic nanostructures have been extensively investigated in recent years for their ability to concentrate light to sub-wavelength scales. Plasmonics allows us to overcome the diffraction limit and confine an intense field to spatial dimensions that are not achievable withalaseror dielectrics, which are typically used in nonlinear optics. The strong fields created by arrays of nanoantennas and metasurfaces can be used to locally enhance nonlinear optical processes, such as surface enhanced Raman scattering (SERS) or second harmonic and difference frequency generation (SHG and DFG), opening new opportunities in, e.g., nonlinear spectroscopy, nonlinear microscopy, near-field sensing, and bio-sensing. Plasmonic nanostructures also alter thelocal density of optical states (LDOS), impacting radiative processes of nearby nano-scale emitters (e.g., molecules, quantum dots). Our plasmonic metasurfaces are modelled using the finite-difference time-domain (FDTD) method, exploiting the most powerful supercomputer accessible in Canada (an IBM BlueGene/Q, Southern Ontario Smart Computing Innovation Platform), which allows us to perform simulations of complex problems with high resolution and accuracy in a short time, speeding-up the design process. We show a plasmonic metasurface which can enhance perpendicularly polarized incident beams in the same volume. This can be exploited to generate THz radiation by DFG in 4¯3m crystal class materials, such as GaAs.

Primary author: Dr CALÀ LESINA, Antonino (University of Ottawa, Department of Physics)

Co-authors: Prof. RAMUNNO, Lora (University of Ottawa, Department of Physics); Prof. BERINI, Pierre (University of Ottawa, School of Electrical Engineering and Computer Science)

Presenter: Dr CALÀ LESINA, Antonino (University of Ottawa, Department of Physics) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 345 2016 CAP Congr … / Report of Contributions Shifted nanorods to increase the d…

Contribution ID: 1328 Type: Oral (Non-Student) / orale (non-étudiant)

Shifted nanorods to increase the density of plasmonic hot-spots for nonlinear optics enhancement Thursday, 16 June 2016 09:30 (15 minutes)

The confinement of the light at the nano-scale and the intense fields due to plasmonics, allowusto enormously increase the local density of states of molecule and nano-objects close to the hot-spots. This can be exploited to enhance nonlinear optical processes, such as surface enhanced Ramanscat- tering (SERS), second harmonic generation (SHG), sum and difference frequency generation (SFG and DFG). Nonlinear optical processes can be enhanced by metasurfaces and nanoantenna arrays with nano-gaps. Plasmonic structures can concentrate the light to sub-wavelength volumes, resulting in hot-spots with very strong fields. A nano-gap is the volume between two pieces of metal, in order to observe a strong field enhancement the distance between the two pieces of metal has to be small, e.g., ∼ 10 nm. Nano-gaps are realized by dipole, bowtie, cross-dipole nanoantennas, thus exhibiting polarization dependence and low density, i.e., number of hot-spots per unit area, due to the physical dimensions of the structures. We show how to increase the hot-spot density taking advantage of high order resonance modes in shifted plasmonic nanorods. This configuration allows us to get a field enhancement in the gap for every incident polarization. This canbe exploited for all those nonlinear processes where two or more frequencies are involved and the hot-spots need to be co-located and/or co-polarized, for several crystal classes.

Primary author: CALÀ LESINA, Antonino (University of Ottawa) Co-authors: Prof. RAMUNNO, Lora (University of Ottawa, Department of Physics); BERINI, Pierre (U)

Presenter: CALÀ LESINA, Antonino (University of Ottawa) Session Classification: R1-5 Photonics II: Optoelectronics and Devices (DAMOPC-DCMMP) / Photonique II : optoélectronique et dispositifs (DPAMPC-DPMCM)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 346 2016 CAP Congr … / Report of Contributions Shaping the light by nonlinear flat …

Contribution ID: 1329 Type: Oral (Non-Student) / orale (non-étudiant)

Shaping the light by nonlinear flat optics Thursday, 16 June 2016 09:15 (15 minutes)

Classical optical lenses shape the light beam based on gradual phase shifts accumulated during the propagation. This results in devices which are difficult to integrate. In recent years, plasmonic metasurfaces opened the field of flat optics. Abrupt changes in the properties of the light, suchas phase and polarization, can be introduced at the sub-wavelength scale by the meta-atoms. These meta-atoms act as Huygen’s sources, allowing to shape the beam in the far-field. New thin-film filter and photonic devices can be realized and easily integrated into existing technologies. We propose a scheme to realize nonlinear flat optics. It uses enhanced nonlinear optics from metasurfaces, where we are able to precisely design not only the enhancement, but also the phase and polarization of emitted nonlinear signals. The meta-atom we use is a novel plasmonic nanoantenna we call the butterfly. This structure exhibits a field enhancement in the gap which can beexploited for nonlinear optics. The field enhanced in the gap is polarization independent, quasi linearly polarized, anditsphase changes as a function of the incident polarization angle. We show a meta-lens made of butterfly antennas, which converts a linearly polarized CW beam into an structured second harmonic beam carrying orbital angular momentum. Nonlinear optics allows us to access a wavelength range otherwise impossible by linear plasmonics, due to the losses in metals. The idea finds application in spatial multiplexing for optical communications, opto-mechanics, molecule orientation and trapping, nonlinear optics enhancement and light structuring. The simulations are performed with the finite-difference time-domain (FDTD) method exploiting the IBM BlueGene/Q supercomputer of the Southern Ontario Smart Computing Innovation Plat- form (SOSCIP).

Primary author: CALÀ LESINA, Antonino (University of Ottawa) Co-authors: Prof. RAMUNNO, Lora (University of Ottawa, Department of Physics); BERINI, Pierre (U)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 347 2016 CAP Congr … / Report of Contributions Terahertz Response of Monolayer …

Contribution ID: 1330 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Terahertz Response of Monolayer Graphene:Velocity Gauge Vs Length Gauge Monday, 13 June 2016 13:30 (15 minutes)

Graphene, as a zero-bandgap two-dimensional semiconductor with a linear electron band dispersion near the Dirac points has potential to exhibit very interesting nonlinear optical properties [1]. In particular, third harmonic generation of terahertz (THz) radiation should occur both due to the nonlinear relationship between the crystal momentum and the current density, and due to the interaction between interband and intraband parts of the current densities due to the vanishing bandgap [2]. In this work, we investigate two different ways of calculating the nonlinear response of graphene to THz radiation. There are two different gauges that are commonly employed to study the interaction of electrons in a semiconductor with a THz or optical field: the velocity gauge and the length gauge [3,4] In the length gauge, the interaction of the electrons with the field is given by ⃗r · E⃗(t), while in the length gauge, it is given by ⃗p · A⃗(t). In this work, we derive the nonlinear density matrix equations and current density expressions in the two gauges for graphene in a two band model. We show that if one uses the mass sum rule for the bands, the two methods yield very similar linear conductivities. However, we find that the nonlinear response can be quite different forthe two approaches, due in large part to the divergences that arise at zero frequency in the velocity gauge when one uses a basis with a finite number of bands. We conclude that one should usethe the length gauge for graphene when calculating the nonlinear THz response. References: [1] S. A. Mikhailov, Phys. Rev. Lett. \textbf{105} ,097401 (2010). [2 ]I. Al-Naib, J. E. Sipe, M. M. Dignam, Phys. Rev. B \textbf{90 }, 245423 (2015). [3] A. Chacona , M. Lewensteina,b, M. F. Ciappina,Journal of Computational Physics. \textbf{1 },1508.04889 (2015).

[4] I. Al-Naib, J. E. Sipe, M. M. Dignam, New J. Phys. \textbf{17 }, 113018 (2015).

Primary author: NAVAEIPOUR, Parvin (Queen’s University) Co-author: Prof. DIGNAM, Marc (Queen’s University) Presenter: NAVAEIPOUR, Parvin (Queen’s University) Session Classification: M2-7 Carbon-based Nanomaterials (DCMMP-DSS) / Nanomatériaux à base de carbone (DPMCM-DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 348 2016 CAP Congr … / Report of Contributions Simulating the DESCANT Neutron …

Contribution ID: 1331 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Simulating the DESCANT Neutron Detection Array with the Geant4 Monte Carlo Toolkit Monday, 13 June 2016 14:00 (15 minutes)

The DEuterated SCintillator Array for Neutron Tagging (DESCANT) is a newly developed high- efficiency neutron detection array composed of 70 hexagonal deuterated scintillators. Duetothe anisotropic nature of elastic neutron-deuteron (n,d) scattering, the pulse-height spectra of a deuterated scintillator contains a forward-peaked structure that can be used to determine the energy of the incident neutron without using traditional time-of-flight methods. Simulations of the array are crucial in order to interpret the DESCANT pulse heights, determine the efficiencies of the array, and examine its capabilities in conducting various nuclear decay experiments. To achieve this, we plan: (i) a verification of the low-energy hadronic neutron physics packages in Geant4, (ii)a comparison of simulated spectra with data from a simple cylindrical “test can” detector geometry, (iii) expanding the simulated light response to a prototype DESCANT detector, and (iv) simulating the entire DESCANT array.

Primary author: Mr TURKO, Joseph (University of Guelph) Co-authors: MACLEAN, Andrew (University of Guelph); RAND, Evan (University of Guelph); Dr GARRETT, Paul (University of Guelph); Mr BILDSTEIN, Vinzenz (University of Guelph) Presenter: Mr TURKO, Joseph (University of Guelph) Session Classification: M2-1 Nuclear Structure I (DNP) / Structure nucléaire I (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 349 2016 CAP Congr … / Report of Contributions Filamentation and multiple filame …

Contribution ID: 1332 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Filamentation and multiple filamentation in in fused silica Tuesday, 14 June 2016 19:00 (2 minutes)

Propagation of high-power femtosecond laser pulses in transparent materials can lead to filamentation. Filamentation occurs due to the Kerr-focusing of the laser pulses in nonlinear medium. Plasma defocusing effect prevent the colapse of the laser pulse and the balance between Kerrnon- linearity and plasma defocusing leads to filamentation. For the first time, we observed multiple filamentation in fused silicaa in interaction of short laser pulses (50 fs-100 fs) using high-resolution three-dimensional FDTD simulations. We show a map of our simulation results in terms of laser energy and laser waist size (NA). Our investigations show that for NA (<0.65) multiple filamentation can occur when the power is above(3.3p_{cr}) the critical power for self-focusing; for tighter focusing conditions only one filament forms. For laser pulses with lower NA, the laser pulsefo- cuses due to nonlinear Kerr effect and ionizes the medium.and the first filament appear. When the plasma is produced, it changes the refractive index of the medium and as a result the trailing part of the laser pulse defocuses. The intensity in front of the laser pulse drops and the ionization process stops. As the pulse propagtes farther, it focuses for the second time, the intensity becomes above the ionization threshold and the second filament appear. Increasing NA results in void shape structure formation in the bulk of fused silica. Our results agrees well with experimental results of (Sudrie et. al. PRL 2002, Yamada et. al. Courier et. al. PRB 2005).

Primary author: Dr NASERI, Neda (University of Ottawa) Co-authors: Mr DUPRAS, Gabriel (University of Ottawa); Prof. LORA, Ramunno (University of Ottawa)

Presenter: Mr DUPRAS, Gabriel (University of Ottawa) Session Classification: DPP Poster Session with beer / Session d’affiches, avec bière DPP

Track Classification: Plasma Physics / Physique des plasmas (DPP)

September 29, 2021 Page 350 2016 CAP Congr … / Report of Contributions Characterization of radioresistanc …

Contribution ID: 1333 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Characterization of radioresistance in human ovarian cancer cells Wednesday, 15 June 2016 09:15 (15 minutes)

The development of a radiosensitivity predictive assay is an attractive goal in radiation oncology. Since there is a high degree of inter-patient variability in the inherent sensitivity or resistance to therapy, it is crucial to have the ability to identify molecular markers that correlate with sensitivity or resistance to radiation treatment. We have applied Raman micro-spectroscopy (RMS) in vitro to discriminate between the ovarian carcinoma cell lines A2780s (parental wild type) and A2780cp (cisplatin cross radio-resistant variant). These two cell lines represent a good model of tumor tissues of similar origin but with different intrinsic chemo- and radio-sensitivities. Moreover, their radiobiological behavior has been extensively studied and their survival curves under different irradiation schemes are known. The Raman spectra collected from individual cells undergo initial preprocessing (background subtraction, normalization and noise reduction) to yield true Raman spectra representative of the cells. The mean of these spectra are analysed with Principal Compo- nent Analysis (PCA) followed by Linear Discriminant Analysis (LDA) to yield a strong separation between the cell lines. The objective of this ongoing work is to characterize the spectral differences between the two cell types in order to determine the underlying biochemical basis for this separation. The multivariate classification model constructed using such Raman spectra ofovarian cancer cells could potentially be utilized for early prediction of tumor response.

Primary authors: Mr AHMAD, Abrar (Dept. of Physics, Carleton University); Mr SHEPHERD- SON, Dean (Dept. of Physics, Carleton University); Mr MORADI, Hamid (Dept. of Physics, Carleton University); Dr MURUGKAR, Sangeeta (Dept. of Physics, Carleton University) Co-authors: Dr NYIRI, Balazs (Dept. of Medical Physics, The Ottawa Hospital Cancer Centre); Dr VANDERHYDEN, Barbara (Dept. of Cellular and Molecular Medicine, University of Ottawa); Dr NIED- BALA, Gosia (Dept. of Medical Physics, The Ottawa Hospital Cancer Centre); Dr EAPEN, Libni (Dept. of Medical Physics, The Ottawa Hospital Cancer Centre); Ms VUONG, Nhung (Dept. of Cellular and Molecular Medicine, University of Ottawa)

Presenter: Mr MORADI, Hamid (Dept. of Physics, Carleton University) Session Classification: W1-4 Radiation Therapy (DPMB-DNP) / Thérapie par rayonnement (DPMB-DPN)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 351 2016 CAP Congr … / Report of Contributions XPCS studies of shear-induced rej …

Contribution ID: 1334 Type: Oral (Non-Student) / orale (non-étudiant)

XPCS studies of shear-induced rejuvenation and nano-plasticity in soft glassy materials Tuesday, 14 June 2016 09:00 (15 minutes)

We present x-ray photon correlation spectroscopy experiments on a set of soft glassy solids, including concentrated nanocolloidal gels, nanoemulsions, and Laponite clay suspensions, subject to in-situ oscillatory shear strain that provide insight into particle rearrangements above yielding at the nanometer scale and their connection to dynamical and mechanical behaviour of the materials. The oscillatory strain causes periodic echoes in the x-ray speckle pattern, creating peaks in the intensity autocorrelation function. The peak amplitudes are attenuated above a threshold strain, signalling the onset of irreversible particle rearrangements. These materials generally exhibit macroscopic strain softening (as measured by mechanical rheometry) well below the XPCS peak attenuation threshold, indicating a range of strains at which deformations are nonlinear but reversible. In the gels, the peak amplitudes decay exponentially with the number of shear cycles above the threshold strain, demonstrating that all regions in the sample are equally susceptible to yielding and surprisingly that the probability of a region yielding is independent of previous shear history. However, in the Laponite clay suspensions, which exhibit characteristic mechanical aging behaviour during gelation, attenuation of echoes in he x-ray speckle pattern can be long livedfor modest strain amplitudes, a hallmark of mechanical rejuvenation phenomena.

Primary author: HARDEN, James L. (University of Ottawa) Co-authors: CHEN, Kui (Johns Hopkins University); ROGERS, Michael C (University of Ottawa); LEHENY, Robert L. (Johns Hopkins University); ABIDIB, Samy (University of Ottawa); RAMAKRISHNAN, Subra- manian (FAMU-FSU College of Engineering); NARAYANAN, Suresh (Argonne National Laboratory); MA- SON, Thomas G. (UCLA)

Presenter: HARDEN, James L. (University of Ottawa) Session Classification: T1-6 Nanostructured and Functional Nanomaterials (DCMMP-DIAP) / Nanomatériaux nanostructurés et fonctionnels (DPMCM-DPIA)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 352 2016 CAP Congr … / Report of Contributions Using dressed fields to extract gau …

Contribution ID: 1335 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Using dressed fields to extract gauge invariant information. Wednesday, 15 June 2016 10:15 (15 minutes)

The existence of unexpected states (states not predicted by the conventional quark model) inheavy Quarkonia, specifically Charmonium and Bottomonium like states, is of great interest tomodern particle physics. States like X(3872), $Y_{b}$(10890), $Z^{\pm}{b}$(10610), and $Z^{\pm}{b}$(10650) have proven difficult to reconcile with the conventional quark model. However, analysis of diquark constituent masses has pointed towards tetraquark configurations being responsible for many of these exotic states. Thus far, the diquark correlations required for a tetraquark configuration of X(3872) have been primarily examined through the use of diquark correlation functions where the Schwinger string is introduced to ensure the gauge invariance of the diquark correlator. Here, research is presented on the use of dressed fields for diquark currents. Results for doubly light, light-heavy, and doubly heavy diquark systems have been obtained, and all results have shown this dressed field method to be an effective means of extracting gauge invariant results from diquark correlation functions.

Primary author: Mr SMITH, Paul (University of Saskatchewan) Co-author: STEELE, Tom (U of Saskatchewan) Presenter: Mr SMITH, Paul (University of Saskatchewan) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 353 2016 CAP Congr … / Report of Contributions Deflection of laser accelerated pro …

Contribution ID: 1336 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Deflection of laser accelerated protons due to multi-megagauss magnetic fields in high-intensity laser-plasma interactions Tuesday, 14 June 2016 16:15 (15 minutes)

Self-generated magnetic fields are produced in high-intensity laser-plasma experiments from several mechanisms, including relativistic electron currents and misaligned density and temperature gradients (the Biermann Battery effect). Understanding the formation and timescales of thesemag- netic fields is important in several high energy density regimes ranging from astrophysical jetsto the fast ignition approach to laser fusion energy. Here we will present a study of the magnetic fields produced in cylindrical geometry using wire targets (10-25µm in diameter) with theTitan laser (700fs, 50 J) at the Jupiter Laser Facility. The spatial and energy distributions of the laser accelerated protons produced in the interaction are recorded using radiochromatic film (RCF) and Thomson Parabola ion spectrometers, respectively. A cylindrical RCF stack was installed around the wire target which provided a large-angle sampling of the spatial distribution. Two well-defined bands, offset ±8-15° vertically from the laser plane and surrounding the wire azimuthally, areob- served for proton energies up to 7.5 MeV. We will show that the two bands observed on the RCF can be attributed to the formation of caustics in linear proton radiography theory wherebythe energetic protons are deflected due to the self-generated magnetic fields. Finally, these results will be compared with 2D and 3D Particle-in-cell (PIC) simulations which qualitatively reproduce the observed bands with magnetic fields on the order of 10 MG due to the Biermann Battery effect.

This work was supported by the U.S. DOE Office of Science, Fusion Energy Science under FWP100182 and by SLAC Laboratory Directed Research and Development. Additional support was provided by LLNL under contract DE-AC52-07NA27344 and the U.S. DOE Office of Science, Fusion Energy Science ACE HEDLP Diagnostics.

Primary author: CURRY, Chandra (SLAC National Accelerator Laboratory/University of Alberta)

Co-authors: PROPP, Adrienne (SLAC National Accelerator Laboratory); PAK, Arthur (Lawrence Liv- ermore National Laboratory); AURAND, Bastian (Heinrich-Heine-University Düsseldorf); RAMAKR- ISHNA, Bhuvanesh (Indian Institute of Science Education and Research, Bhopal); RUYER, Charles (SLAC National Accelerator Laboratory); ROEDEL, Christian (SLAC National Accelerator Laboratory); GOYON, Clement (Lawrence Livermore National Laboratory); FIUZA, Frederico (SLAC National Accelerator Laboratory); WILLIAMS, Jackson (Lawrence Livermore National Laboratory); RUBY, John (Lawrence Livermore National Laboratory); KIM, Jongjin (SLAC National Accelerator Laboratory); GAUTHIER, Maxence (SLAC National Accelerator Laboratory); WILLI, Oswald (Heinrich-Heine-University Düssel- dorf); MISHRA, Rohini (SLAC National Accelerator Laboratory); GOEDE, Sebastian (SLAC National Accelerator Laboratory); KERR, Shaun (Lawrence Livermore National Laboratory/University of Al- berta); GLENZER, Siegfreid (SLAC National Accelerator Laboratory); TSUI, Ying (University of Al- berta)

Presenter: CURRY, Chandra (SLAC National Accelerator Laboratory/University of Alberta) Session Classification: T3-2 Plasma Physics and Applications (DPP) / Applications et physique

September 29, 2021 Page 354 2016 CAP Congr … / Report of Contributions Deflection of laser accelerated pro … des plasmas (DPP)

Track Classification: Plasma Physics / Physique des plasmas (DPP)

September 29, 2021 Page 355 2016 CAP Congr … / Report of Contributions Studying the carbon cycle with at …

Contribution ID: 1337 Type: Invited Speaker / Conférencier invité

Studying the carbon cycle with atmospheric remote sensing measurements of carbon dioxide Wednesday, 15 June 2016 08:30 (30 minutes)

The carbon cycle describes the flow of carbon, typically in the form of carbon dioxide, betweenthe atmosphere, oceans and land. It is influenced by changes in the sources and sinks of carbon: from anthropogenic releases (fossil fuel burning), changes in land use, the respiration and photosynthe- sis of plants, and the uptake and release by oceans. Atmospheric measurements of carbon dioxide are required to quantify the sources and sinks and monitor their long-term trends. With the es- tablishment of several sources of high-quality remote sensing measurements of carbon dioxide from the ground-based Total Carbon Column Observing Network (TCCON), and the space-based Greenhouse Gases Observing Satellite (GOSAT, 2009) and the Orbiting Carbon Observatory (OCO- 2, 2014), we are now entering an exciting, data-rich era in carbon cycle science.

Primary author: WUNCH, Debra (University of Toronto) Presenter: WUNCH, Debra (University of Toronto) Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 356 2016 CAP Congr … / Report of Contributions A Phononic Crystal Waveguide for …

Contribution ID: 1338 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

A Phononic Crystal Waveguide for Surface Acoustic Waves Tuesday, 14 June 2016 19:04 (2 minutes)

Surface acoustic waves (SAWs) on semiconductors, such as gallium arsenide (GaAs), are able to control quantum processes. SAW devices are augmented with phononic crystal waveguides to have fine control of the acoustic path. A phononic crystal in a GaAs substrate is produced bywet etching a square lattice array of void inclusions with an L1 defect. GaAs by its piezoelectricity, is suited for SAW generation via interdigitated transducers (IDTs). Initially, an IDT design must allow for determination of the phononic crystal mode frequency which is difficult to predict exactly. IDTs with uniform adjacent electrode overlap produce a narrow SAW bandwidth, which is even narrower with additional electrodes. Such low bandwidth is not practical for probing the mode frequency since it is unlikely to coincide. However, adjacent electrode overlap and a large number of electrodes are necessary to achieve appreciable SAW amplitude on GaAs; hence an optimized IDT is necessary for sufficient bandwidth and amplitude. Apodized IDTs with varying electrode overlap are developed for large SAW bandwidth and amplitude to probe the waveguide mode frequency. Once the mode is determined, focusing, narrowband IDTs on GaAs are then utilized for high power excitation of the phononic crystal mode frequency. The SAW vertical displacement amplitude is measured with surface scanning Sagnac interferometry as the SAW interacts with the phononic crystal. Spatial and frequency mapping of the SAW vertical displacement amplitude is analyzed to determine transmission and modal qualities of the phononic crystal waveguide.

Primary author: Mr MUZAR, Edward (Queen’s University) Co-authors: Ms AZODI AVAL, Golnaz (Queen’s University); Dr STOTZ, James (Queen’s Univer- sity)

Presenter: Mr MUZAR, Edward (Queen’s University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 357 2016 CAP Congr … / Report of Contributions Dynamical perturbations of the th …

Contribution ID: 1339 Type: Oral (Non-Student) / orale (non-étudiant)

Dynamical perturbations of the thermosphere inferred from satellite observations of O(1D) nightglow Wednesday, 15 June 2016 09:45 (15 minutes)

Manifestations of thermospheric dynamics have been observed in the variations of the upper atmosphere density, temperature, neutral winds and F-region plasma over a wide time range. These fields are influenced by perturbations propagating vertically from the lower and middleatmo- sphere (e.g. tides) and from above through variations in the solar and geomagnetic activity. The Wind Imaging Interferometer (WINDII) flown on the Upper Atmosphere Research Satellite provides multiyear observations of O(1D) nightglow volume emission rates, Doppler temperatures and neutral winds over the altitude range of 150 − 300 km with continuous latitude coverage of 42°N − 42°S. These data are employed in the study of the global and seasonal extent and variability of the thermospheric midnight temperature (MTM), a large scale neutral temperature anomaly with wide-range effect on the nighttime thermospheric dynamics at low latitudes. It isfoundthat the MTM extends well into midlatitudes and coincides in local time with the appearance of a wave 4 signature, observed in the vertical and zonal variability of the O(1D) volume emission rates, Doppler temperatures and neutral winds (zonal and meridional). The current understanding is that the wave 4 is associated with non-migrating tides propagating upward from the lower atmosphere. The vertical and global extend of the wave 4 as the sourceof the MTM will be discussed.

Primary author: SHEPHERD, Marianna (York University, Lassonde School of Engineering) Presenter: SHEPHERD, Marianna (York University, Lassonde School of Engineering) Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 358 2016 CAP Congr … / Report of Contributions Study and Development of Pulse- …

Contribution ID: 1340 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Study and Development of Pulse-shape Discrimination Firmware for Background Mitigation in the DEAP-3600 Experiment Monday, 13 June 2016 16:15 (15 minutes)

DEAP-3600 is particle detector looking for weakly interacting massive particles (WIMPs) as a source of dark matter. Incident particles colliding with the 3600 kg argon target in DEAPwill produce excited dimers which decay releasing scintillation light. The proportion of singlet and triplet excited states of the dimers produced depends on the interacting particle type, with the result that events can be characterized by the timing distribution of the scintillation light. The intrinsic Ar-39 in natural argon produces approximately 1 Hz/kg of beta decays. To reduce the background rate from beta decay, the DEAP trigger removes a proportion of these events. It is crucial that potential WIMP events and rare background events are not miscategorized as beta decays by the trigger, and thus the trigger calibration is essential to achieve the dark matter sensitivity goal of the experiment. This talk will explain the trigger algorithm, its parameters, and present results from the trigger calibration.

Primary author: Mr NORMAN-HOBBS, Simon (TRIUMF) Presenter: Mr NORMAN-HOBBS, Simon (TRIUMF) Session Classification: M3-5 Cosmic frontier: Dark matter I (PPD) / Frontière cosmique: matière sombre I (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 359 2016 CAP Congr … / Report of Contributions Computer Simulation Model of Po …

Contribution ID: 1341 Type: Oral (Non-Student) / orale (non-étudiant)

Computer Simulation Model of Polymorphisms of Beta-Amyloid Crystals Monday, 13 June 2016 16:15 (15 minutes)

Research has established a strong link between symptoms of Alzheimer’s disease (AD) to 36-43 amino acid residues peptides, called the amyloid beta (Aβ) peptides. Patients with AD are usually diagnosed with aggregates of Aβ peptides, also called plaques, which can be as large as several µm. The structures of the plaques display a wide variety of polymorphisms that depends onthe environments, and are very difficult to reproduce in experiments. This has greatly hindered the efforts to discover the microscopic origin of AD. Recently, Eisenberg et al. (Proc Natl Acad Sci USA, 108, 16938-16943, 2011) resolved the structures of segments of Aβ of 5 to 10 amino acid residues. The crystals are very stable, and display a complex polymorphisms of stacked parallel andanti- parallel β-sheet that may be in-register or out-of-register. At this point over 20 micro-crystals have been identified, and in many cases the same segment ofAβ can form several structures.

This submission considers an all-atom simulation model that uses an interaction force fieldbased on the Eisenberg’s crystal structures. In the spirit of Go models of folding of single proteins, the force field biased the peptides to the micro-crystal structures, but also exploit the symmetry ofthe crystals.The model has two adjustable parameters: the strength of the hydrogen bonds that stabilize the β-sheet structure, ϵHB ; the strength of van der Waals (vdW) interactions that stabilizes the stacking of the β-sheet, ϵvdW . Computer simulations of the model found that for ϵvdW /ϵHB > 0.5, and at low temperature the layers tends to form stacked three-dimensional structures. How- ever, for ϵvdW /ϵHB < 0.5, the Aβ segments long single-layer β-sheet similar plaques observed in full length Aβ. The implication of the results to AD will be discussed.

Primary author: LINHANANTA, Apichart (Lakehead University) Co-author: GIRARDIN, Robert (Lakehead University) Presenter: LINHANANTA, Apichart (Lakehead University) Session Classification: M3-6 Computational Biophysics: Methods and Concepts (DPMB) / Biophysique numérique : méthodes et concepts (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 360 2016 CAP Congr … / Report of Contributions Electrode effects in dielectric spect …

Contribution ID: 1342 Type: Oral (Non-Student) / orale (non-étudiant)

Electrode effects in dielectric spectroscopy measurements on (Nb+In) co-doped TiO2 Wednesday, 15 June 2016 15:45 (15 minutes)

Recently, several papers reported the discovery of giant permittivity and low dielectric loss in (Nb+In) co-doped TiO2. A series of tests was performed which included the measurement of the frequency dependence of the dielectric permittivity and ac conductivity of co-doped (Nb+In)TiO2 as a function of electrode type, sample thickness and temperature. The data suggest that the measurements are strongly affected by the electrodes. The consistency between four contact vander Pauw dc conductivity measurements and bulk conductivity values extracted from two contact ac conductivity measurements suggest that the values of colossal permittivity are, at least in part, a result of Schottky barrier depletion widths that depend on electrode type and temperature.

Primary author: CRANDLES, David (Brock University) Co-authors: NUZHNY, Dimitri (Insitute of Physics, The Czech Academy of Sciences); PETZELT, Jan (Institute of Physics, The Czech Academy of Sciences); PROKES, Jan (Charles University in Prague, Faculty of Mathematics and Physics); SAVINOV, Maxim (Institute of Physics, The Czech Academy of Sciences); KAMBA, Stanislav (Institute of Physics, The Czech Academy of Sciences); YEE, Susan (Brock University)

Presenter: CRANDLES, David (Brock University) Session Classification: W3-3 Quantum Transport (DCMMP) / Transport quantique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 361 2016 CAP Congr … / Report of Contributions Flow-induced beta-sheet formatio …

Contribution ID: 1343 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Flow-induced beta-sheet formation in silk fibroin solutions Wednesday, 15 June 2016 14:00 (15 minutes)

Silk fibres from the Bombyx Mori silkworm are well known for their impressive strength andtough- ness. They have mechanical properties that are comparable to the best synthetic fibres available, and consequently have numerous applications as structural materials in biomedicine and engineering. Despite their importance as high performance materials, a comprehensive understanding of the how the sequence of the structural protein, fibroin, impacts the fibre formation during the spinning process is still lacking. In this talk, we present experimental studies of reconstituted silk fibroin proteins and supporting computer simulations of silk-mimetic peptide fragments thatsug- gest two important mechanisms in the fibre formation process: (1) tyrosine residues in the fibroin sequence template the inter-molecular association chains in solution, and (2) flow-induced chain tension acts to nucleate the formation of inter-molecular beta sheet content in an orientational dependent manner. Moreover, we show that covalent cross-linking of tyrosine side chains results in spontaneous beta-sheet formation upon removal of water, even in the absence of shear, while non-crosslinked samples require post treatment to induce similar levels of crystallinity. The implications of these findings for ex vivo fabrication of high-strength silk fibres will be discussed.

Primary authors: PARTLOW, Benjamin P. (Tufts University); KAPLAN, David L. (Tufts Univer- sity); HARDEN, James L. (University of Ottawa); BAGHERI, Mehran (University of Ottawa) Presenter: BAGHERI, Mehran (University of Ottawa) Session Classification: W2-1 Biomechanics and Fluid Dynamics (DPMB) / Biomécanique et dynamique des fluides (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 362 2016 CAP Congr … / Report of Contributions Ultrasonic waves in strongly scatt …

Contribution ID: 1344 Type: 2016 DCMMP PhD Thesis Award Competition

Ultrasonic waves in strongly scattering disordered media: understanding complex systems through statistics and correlations of multiply scattered acoustic and elastic waves. Wednesday, 15 June 2016 13:15 (30 minutes)

The study of classical wave transport in strongly scattering, disordered media is a field richwith potential for understanding new fundamental wave physics phenomena, understanding the physical properties of amorphous materials, and probing the characteristics of complex, real-world systems. In this thesis, ultrasonic wave transport in complex media is investigated via analysis of the multiply-scattered transmitted field. In the strong-scattering regime, wave interference effects give rise to interesting physical phenomena, such as Anderson localization, which for electron transport was awarded the Nobel prize, and infinite-range C0 correlations. The results presented provide the first experimental determination of the mobility edge and critical exponent ν that characterize the Anderson transition for classical waves. Additionally, infinite-range C0 correlations have for the first time been directly observed [1], and found to grow dramatically near the mobility edge, along with the C2 and C3 correlations. Measurements of the multifractal exponent ∆2 demonstrated the link between C0 correlations and Anderson localization. The density of states and level-spacing statistics are two underlying properties that affect wave transport in amorphous materials. Direct measurements of these quantities were obtained using small samples, allowing individual vibrational modes to be resolved [2]. The density of states showed a plateau extending well into the expected Debye regime, and evidence of a Boson peak was observed at low frequencies. The level-spacing statistics indicated that transport in the frequency ranges measured was on the diffusive side of the mobility edge, providing experimental evidence that the Boson peak need not result from localized modes. Multiply scattered classical waves also provide a useful tool for characterizing disordered systems. In this work, the dynamics of a suspension of bubbles were investigated using phase-based Diffusing Acoustic Wave Spectroscopy, where a new approach using phase correlations was shown to give additional information beyond that obtainable from traditional methods. [1] W.K. Hildebrand, A. Strybulevych, S.E. Skipetrov, B.A. van Tiggelen, and J.H. Page, Phys. Rev. Lett. 112, 073902 (2014).

[2] W.K. Hildebrand, L.A. Cobus, and J.H. Page, J. Acoust. Soc. Am. 127, 2819 (2010).

Primary author: Dr HILDEBRAND, William Presenter: Dr HILDEBRAND, William Session Classification: W2-6 DCMMP PhD Thesis Award Competition / Compétition du Prix de thèse doctorale DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 363 2016 CAP Congr … / Report of Contributions Differential dynamic microscopy s…

Contribution ID: 1345 Type: Invited Speaker / Conférencier invité

Differential dynamic microscopy studies of collective cell dynamics Wednesday, 15 June 2016 14:15 (30 minutes)

We discuss the use of a recently developed microscopy technique, differential dynamic microscopy (DDM), for studying the collective dynamics of two dimensional assemblies of living cells. DDM is a Fourier-space image analysis method that allows one to obtain the equivalent of multi-angle dynamic light scattering data using an ordinary white-light microscopy set-up and a digital video camera. The dynamical information obtained in aDMM experiment is a direct probe of collective cell motion on a range of length and time scales. As such, DMM measurements of cell dynamics are complimentary to direct cell tracking and PIV methods. We illustrate this approach with examples of motile populations of cell at different densities on model substrates.

Primary authors: GIAVAZZI, Fabio (Universitá degli Studi di Milano); HARDEN, James L. (Univer- sity of Ottawa); GOLIPOUR, Rahil (University of Ottawa); CERBINO, Roberto (Universitá degli Studi di Milano)

Presenter: HARDEN, James L. (University of Ottawa) Session Classification: W2-1 Biomechanics and Fluid Dynamics (DPMB) / Biomécanique et dynamique des fluides (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 364 2016 CAP Congr … / Report of Contributions Collecting events based on jet sub …

Contribution ID: 1346 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Collecting events based on jet substructure with the ATLAS detector Monday, 13 June 2016 14:15 (15 minutes)

The most common feature produced in the proton-proton collisions of the Large Hadron Collider (LHC) are collimated sprays of particles referred to as jets, which are typically produced from quarks or gluons. The large centre-of-mass energy of the LHC collisions also enables theproduc- tion of heavy particles with a significant Lorentz-boost. The decay products of such a boosted heavy particle can be reconstructed as a single jet, and hence at a first glance, look very similar to the jets produced from quarks and gluons. However, these classes of jets have different internal structure. The study of the internal jetsub- structure is currently a hot topic within High Energy Physics. A long list of analyses at the LHC exploit features of the radiation pattern within jets to identify jets from heavy boosted objects, often in searches for new physics phenomena. A significant limitations for some of these analyses at the ATLAS experiment is that many of the interesting collision events are never recorded since they are not accepted by the trigger system that filters out the vast majority of collisions only keeping the ones deemed most interesting. This presentation will give an overview of jet substructure used in physics studies of boosted objects with particular emphasis on the development of dedicated, optimized triggers that select data events based on features of the substructure of jets. This has potential to significantly improve the sensitivity of several analyses that searchfornew physics phenomena.

Primary author: Mr SHERAFATI, Nima (Carleton University) Co-author: Dr GILLBERG, Dag (Carleton University) Presenter: Mr SHERAFATI, Nima (Carleton University) Session Classification: M2-5 Energy Frontier: SUSY and Exotics (PPD) / Frontière d’énergie: supersymétrie et particules exotiques (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 365 2016 CAP Congr … / Report of Contributions 2D Materials Growth: Application …

Contribution ID: 1350 Type: Invited Speaker / Conférencier invité

2D Materials Growth: Applications and Challenges Monday, 13 June 2016 13:00 (30 minutes)

Two-dimensional (2D) materials have attracted much attention due to their unique properties. Con- trollable synthesis of 2D materials with high quality and high efficiency is essential for their large- scale applications. In parallel to the chemical synthesis route, chemical vapor deposition (CVD) has been one of the most important techniques for the synthesis of 2D materials. The present talk will be devoted to the CVD growth of graphene, boron nitride, core-shell nanoparticles@graphene and transition metal dichalcogenides (TMDs) in our research group. The Hydrogen-induced effects during the growth will be discussed. In parallel, we will show that the use of these resulting 2D materials as electrodes leads to an enhancement of the overall reactivity and sensors sensitivity which is favorable for many applications.

Primary author: Prof. SIAJ, Mohamed (UQAM) Presenter: Prof. SIAJ, Mohamed (UQAM) Session Classification: M2-7 Carbon-based Nanomaterials (DCMMP-DSS) / Nanomatériaux à base de carbone (DPMCM-DSS)

September 29, 2021 Page 366 2016 CAP Congr … / Report of Contributions Custom low-dimensional material …

Contribution ID: 1351 Type: Invited Speaker / Conférencier invité

Custom low-dimensional material systems explored from atom to bulk Monday, 13 June 2016 11:00 (30 minutes)

The ability to controllably layer atomically thin crystals into custom-made materials holds promise for realizing physical systems with distinct properties, previously inaccessible. The experimental results described in this talk seek to uncover the unique nature of the charge carriers in such few-atoms-thick materials as well as effects that interlayer coupling and disorder have on their properties. In the first part of the talk I will discuss scanning tunneling microscopy (STM) and spectroscopy (STS) experiments performed on graphene systems at low temperatures and in magnetic field. We find that twisting graphene layers away from the equilibrium Bernal stacking leads totheforma- tion of Moiré patterns and results in a system with novel electronic properties tuned bythetwist angle. Moreover, we study Landau quantization in graphene and by performing spatially resolved STM/STS we demonstrate the true discrete quantum mechanical electronic spectrum within the Landau level band near an impurity in graphene in the quantum Hall regime. In the second part of the talk I will focus on the 1T polymorph of TaS2, which has one of the richest phase diagrams among the layered transition metal dichalcogenides. We address the question of how the transition from bulk to few layers affects the different phases in this material. Specifically, we use variable temperature Raman spectroscopy measurements and show that the existence of the most highly ordered phases depend on having a critical number of stacked 1T-TaS2 layers. Furthermore, using low temperature STM/STS, we explore the spatial variation of the electronic properties of the commensurate charge density wave phase at the atomic level.

Primary author: Prof. LUICAN-MAYER, Adina (University of Ottawa) Presenter: Prof. LUICAN-MAYER, Adina (University of Ottawa) Session Classification: M1-2 Material Growth and Processing (DCMMP) / Croissance et traitement des matériaux (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 367 2016 CAP Congr … / Report of Contributions Theory of Nanoscale Friction

Contribution ID: 1355 Type: Invited Speaker / Conférencier invité

Theory of Nanoscale Friction Tuesday, 14 June 2016 09:30 (30 minutes)

In a nanoscale friction experiment, the tip of an atomic force microscope (AFM) cantilever is dragged along an atomically flat surface, and the resulting friction force is measured optically from the cantilever deformation. Due to the small size of the system, thermal noise effects coming from the atomistic degrees of freedom play an important role. In this talk, the ideas of stochastic modeling will be applied to atomic friction phenomena. We theoretically study atomic friction experiments in the stick-slip regime within the framework of the Prandtl-Thomlinson model. A differential equation describing the force probability distribution is derived. Analytical approximate solutions of this equation are found for the asymptotic cases of high and low effective spring constant, but for arbitrary pulling velocities. Excellent accuracy of these approximate expressions is demonstrated numerically. In particular, the theoretical expression for the mean force, although obtained for small spring constants, is shown to be accurate also somewhat outside of its expected validity range. Finally, the influence of friction aging effect on the experimental friction forces and the ways to include it into the theory are discussed.

Primary author: Prof. EVSTIGNEEV, Mykhaylo (Memorial University of Newfoundland) Presenter: Prof. EVSTIGNEEV, Mykhaylo (Memorial University of Newfoundland) Session Classification: T1-6 Nanostructured and Functional Nanomaterials (DCMMP-DIAP) / Nanomatériaux nanostructurés et fonctionnels (DPMCM-DPIA)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 368 2016 CAP Congr … / Report of Contributions Paths for High-Efficiency Low- …

Contribution ID: 1358 Type: Invited Speaker / Conférencier invité

Paths for High-Efficiency Low-Cost Photovoltaics Wednesday, 15 June 2016 08:30 (30 minutes)

Over the last couple of decades, the field of photovoltaics has experienced dramatic advances both scientifically and technologically. Critical elements playing into these advances have beenthe development of novel solar materials, innovative light trapping approaches, and innovative device integrations and enhancements. This talk will provide an introductory overview of the advances in incumbent technologies of silicon and III-V multijunction crystalline semiconductors as well as highlight the nascent and rapidly progressing perovskite solar cells – considering that the focus of all technologies is to continuously advance both high-efficiency and low-cost.

Thereafter, the talk will speak to molding the flow of light and passivation as critical aspectsto the attainment of high-efficiency solar cells, and in particular with regard to thin Si solarcells. Photonic crystals, periodic nanostructures that exhibit optical bandgaps and various propagation modes, provide an opportunity for control over reflection, transmission and trapping of light in a given device construct. Potential paths for photonic crystal integration in silicon solar cells will be discussed. Specifically, successful integration of recently developed selectively transparent and conducting photonic crystal as an intermediate reflector in a multi-junction thin film silicon photovoltaic cell will be presented. Further, possible patterning of silicon into a photonic crystal absorber itself will be considered. In this context, the importance of surface passivation will be highlighted and in particular recent development of low temperature optically transparent passivation material and their integration in silicon devices will be given.

Primary author: Prof. KHERANI, Nazir P. (University of Toronto) Presenter: Prof. KHERANI, Nazir P. (University of Toronto) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 369 2016 CAP Congr … / Report of Contributions A photonic link for donor spin qub …

Contribution ID: 1363 Type: Invited Speaker / Conférencier invité

A photonic link for donor spin qubits in silicon Thursday, 16 June 2016 13:45 (30 minutes)

The electronic and nuclear spins of shallow donor impurities in silicon have many highlyattrac- tive properties as qubits for a semiconductor-based quantum information technology. In addition to being compatible with standard CMOS processing, these qubits are atomically identical, have demonstrated incredibly long relaxation times, T1, and coherence times, T2, and a single-spin technology has shown qubit initialization, manipulation and readout fidelities compatible with the requirements for successful quantum error correction. The missing element for a donor spin qubit technology in Si is a method of coupling spatially- separated qubits. To scale up such systems it would be advantageous to connect silicon donor spin qubits in a cavity-quantum electrodynamics (c-QED) architecture. Many proposals in this direction introduce strong electric dipole interactions to the otherwise largely isolated spin qubit ground state in order to couple to superconducting cavities. Here we present an alternative approach, which uses the built-in strong electric dipole (optical) transitions of singly-ionized double donors in silicon. These donors, such as chalcogen donors S+, Se+ and Te+, have the same groundstate spin Hamiltonians as shallow donors yet offer mid-gap binding energies and mid-IR optical access to excited orbital states. The deep chalcogen double donors in Si can therefore combine all of the attractive properties of shallow donor spin qubits with the possibility of a strong photonic coupling. This photonic link is spin-selective which could be harnessed to measure and couple donor qubits using photonic cavity-QED. This approach should be robust to device environments with variable strains and electric fields, and will allow for CMOS-compatible, bulk-like, spatially separated donor qubit placement, optical parity measurements, and 4.2K operation. We will present preliminary data in support of this approach, including 4.2K optical readout in Earth’s magnetic field, where long T1/T2 times have been measured. Based on these results, a number of photonic readout and coupling schemes become possible for chalcogen donor spin qubits in Si, providing a new way forward for Si-based quantum information technology.

Presenter: Prof. SIMMONS, Stephanie (SFU) Session Classification: R2-5 Quantum Information and Quantum Optics (DCMMP-DAMOPC) / Information quantique et optique quantique (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 370 2016 CAP Congr … / Report of Contributions (TBC) New physics efforts at the i…

Contribution ID: 1375 Type: Invited Speaker / Conférencier invité

(TBC) New physics efforts at the intensity frontier Thursday, 16 June 2016 09:00 (30 minutes)

Presenter: POSPELOV, Maxim Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 371 2016 CAP Congr … / Report of Contributions Phonon Dynamics of Lead Scandiu …

Contribution ID: 1377 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Phonon Dynamics of Lead Scandium Tantalate Tuesday, 14 June 2016 19:06 (2 minutes)

Brillouin light scattering experiments were performed on lead scandium tantalate ceramics using a 180˚ backscattering geometry. Spectral peaks due to longitudinal bulk acoustic modes were observed and their frequencies were used to determine the corresponding phonon velocities and elastic constant c¬11. Temperature dependence of longitudinal bulk mode frequencies, and subsequently velocities, was characterized in the high temperature regime. Experiments performed on a sample of lead scandium tantalate ceramic coated with a thin film of aluminium failed to yield Brillouin peaks due to surface acoustic modes. Complementary Raman scattering experiments were performed on lead scandium tantalate at room temperature and high temperatures.

Primary author: Mr SPENCER, Stephen (Memorial University of Newfoundland) Presenter: Mr SPENCER, Stephen (Memorial University of Newfoundland) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 372 2016 CAP Congr … / Report of Contributions 3D Printed Hollow-Core Terahertz …

Contribution ID: 1378 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

3D Printed Hollow-Core Terahertz Optical Waveguides With Hyperuniform Disordered Dielectric Reflectors Tuesday, 14 June 2016 19:14 (2 minutes)

Novel hollow-core THz waveguides featuring hyperuniform disordered reflectors are proposed, fabricated, and characterized. Our main motivation is to explore the possibility of designing hollow core waveguides that feature spectrally broad bandgaps that are potentially superior to those attainable with purely periodic structures. Particularly, we demonstrated theoretically thatusing resin/air material combination that offers relatively low refractive index contrast of 1.67/1, onecan design a hollow core waveguide featuring a 90GHz (~21%) bandgap centered at 0.43THz. In such a waveguide, a highly porous PBG reflector comprised ~113μm radius cylinders connected with ~35μm thick bridges. We then attempted fabrication of such waveguides using 3D stereolithogra- phy. The diameter of the resultant waveguides (reflector size) is ~20mm, while the diameter ofthe hollow core is ~5mm. Due to limitations of 3D printer used in our work, the resolution was limited to 100µm which allowed us to print structures with bridges thicker than 200µm. As we demonstrated both theoretically and experimentally, thicker bridges lead to the overall reduction in the bandgap spectral size. Nevertheless, the fabricated waveguides featured relative wide bandgaps (up to ~15%), and low transmission losses (<0.10cm-1) within their PBGs.

Primary author: Mr MA, Tian (Ecole Polytechnique de Montreal) Co-author: Prof. SKOROBOGATIY, Maksim (Ecole Polytechnique de Montreal) Presenter: Mr MA, Tian (Ecole Polytechnique de Montreal) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 373 2016 CAP Congr … / Report of Contributions Stacking of Red Blood Cells due to …

Contribution ID: 1379 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Stacking of Red Blood Cells due to Depletion Effects Tuesday, 14 June 2016 19:10 (2 minutes)

The aggregation of red blood cells into coin-like stacks called rouleaux is associated with anumber of underlying causes including infections and diseases such as cancer. Rouleaux formation occurs when the protein concentration in blood plasma is high. Hence, one possible cause for rouleaux formation is red blood cells clumping together due to depletion forces. In the case of several large objects suspended in a bath of small objects (the depletants), it is globally entropically favourable at high depletant concentration for the large objects to remain in contact since this gives more free space to the smaller objects. The depth of the resulting depletant potential is directly related to the density of the depletants. In this presentation I will present results from coarse-grained simulations investigating depletant induced rouleaux formation. Simulations are performed for different depletant and red blood cell densities. Rouleaux formation is observed to happen relatively suddenly at a critical depletant density. The rouleaux stacks are characterized in terms of the cluster size and the number of alignedred blood cells with the stack.

Results indicate that the stacks form with a central, orderly aligned stack that has a maximum size after which additional red blood cells adhere to the sides of the stack yielding a more disordered morphology. The dependency of these results on the red blood density is also explored. Large scale systems that yield multiple rouleaux formation are investigated within the context of network formation via nucleation processes.

Primary authors: NEHRING, Austin; DE HAAN, Hendrick (University of Ontario Institute of Technology)

Presenter: NEHRING, Austin Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 374 2016 CAP Congr … / Report of Contributions Myocardial Flow Reserve Imaging …

Contribution ID: 1380 Type: Invited Speaker / Conférencier invité

Myocardial Flow Reserve Imaging to Direct Optimal Therapies for Ischemic Heart Disease Thursday, 16 June 2016 09:00 (30 minutes)

Nuclear cardiology imaging with SPECT or PET is used widely in North America for the diagnosis and management of patients with coronary artery disease. Conventional myocardial perfusion imaging (MPI) can identify areas of reversible ischemia, as suitable targets for coronary artery revascularization by angioplasty or bypass surgery. However, the accuracy of this technique is limited in patients with early disease in the micro-vasculature or advanced disease in multiple coronary arteries, where there is no normal reference territory against which to assess the ‘relative’ perfusion defects. We have developed methods for the routine quantification of absolute myocardial blood flow (MBF mL/min/g) and coronary flow reserve (stress/rest MBF) using rubidium-82 dynamic PET imaging. The incremental diagnostic and prognostic value of absolute flow quantification over conventional MPI has been demonstrated in several recent studies. Clinical use of this added information for patient management to direct optimal therapy and the potential to improve cardiac outcomes remains to be proven, but may be informed by recent progress and clinical adoption of invasive fractional flow reserve (FFR)-directed revascularization. This talk will present recent progress in this field, towards non-invasive CFR image-guided therapy with cardiac PET and SPECT imaging.

Primary author: DEKEMP, Robert (uOttawa Heart Institute) Co-author: Dr ROB, Beanlands (uOttawa Heart Institute) Presenter: DEKEMP, Robert (uOttawa Heart Institute) Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 375 2016 CAP Congr … / Report of Contributions Tests of the electroweak interactio …

Contribution ID: 1381 Type: Invited Speaker / Conférencier invité

Tests of the electroweak interaction from studies of the beta decay of trapped 8Li ions Wednesday, 15 June 2016 08:30 (30 minutes)

Detailed studies of nuclear beta decay can provide stringent tests of the Standard Model of particle physics. In the beta decay of 8Li, the nucleus emits an electron and an antineutrino, and the daughter 8Be nucleus is left in an excited state which breaks up into two alpha particles. Thean- gular correlations between these decay products are sensitive to any possible tensor contribution to the pure “vector minus axial-vector” structure of the electroweak interaction. The Beta-decay Paul Trap (BPT), an open-geometry radiofrequency-quadrupole ion trap which is instrumented with an array of double-sided silicon strip detectors, has been used to precisely study these angular correlations. The BPT is used to suspend the 8Li nuclei in vacuum so that the energy and momentum of the two alpha particles and the direction of the electron can be precisely determined. From this information, the energy and direction of each emitted antineutrino, despite them being virtually undetectable, could be inferred from energy and momentum considerations and the angular distribution of the neutrinos from the decay was precisely determined. For the first time in over half a century, the tensor-interaction limits obtained from electron-neutrino angular measurements have been improved. In addition, data of similar quality on the decay of 8B has been obtained, which, when combined with the data from the 8Li decay, will provide additional tests of fundamental symmetries.

Primary author: SCIELZO, Nicholas (Lawrence Livermore National Laboratory) Presenter: SCIELZO, Nicholas (Lawrence Livermore National Laboratory) Session Classification: W1-3 Testing Fundamental Symmetries I (DNP-PPD-DTP) / Tests de symétries fondamentales I (DPN-PPD-DPT)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 376 2016 CAP Congr … / Report of Contributions Probing Nuclear Shell Evolution u …

Contribution ID: 1383 Type: Invited Speaker / Conférencier invité

Probing Nuclear Shell Evolution using Radioactive Ion Beams at ISOLDE, CERN Wednesday, 15 June 2016 15:45 (30 minutes)

The science of stellar nucleosynthesis aims at understanding how the elements in the universe are formed in stars. On a microscopic scale, the formation of elements is dictated by the properties of atomic nuclei and their interactions. Of special importance for r-process nucleosynthesis is a fundamental understanding of shell evolution towards neutron-rich nuclei. The finding ofa soft N=2 harmonic oscillator shell in the “Island of Inversion” was one of the first discoveriesof changing shell structure in exotic nuclei and triggered a renaissance in our field thanks to the availability of intense beams of unstable ions. Recent experiments at the RIKEN Nishina Center (Japan) indicate that also the N=3 harmonic oscillator shell is softened for extremely neutron-rich nuclei, which would effect the r-process flow in a dramatic way. I will discuss the underlying physics and will report on our recent experiments at the radioactive ion beam facility ISOLDE at CERN using the high-granularity MINIBALL array. In a series of studies we probed the N=3 Neutorn harmonic oscillator shell gap around 68Ni. Specially, using a multiple coulomb excitation experiment a clear indication for an onset of deformation beyond N=40 can be observed, indicating the pivotal role of subshell structure on the evolution of collevtice nuclear properties.

Primary author: MUECHER, Dennis (University of Guelph) Presenter: MUECHER, Dennis (University of Guelph) Session Classification: W3-1 Nuclear Structure III (DNP) / Structure nucléaire III (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 377 2016 CAP Congr … / Report of Contributions Entangled photon pair source tow …

Contribution ID: 1384 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Entangled photon pair source towards quantum spectroscopy Tuesday, 14 June 2016 19:12 (2 minutes)

In nonlinear spectroscopy, measuring weak nonlinear signals generated from feeble signal and probe fields in a nonlinear material can be quite difficult, especially with photosensitive materials. The field of quantum spectroscopy has long theorised applications of photon pairs fromSponta- neous Parametric Down-Conversion sources for enhancing two-photon nonlinear spectroscopy through the utilization of quantum properties. Using the high frequency correlations between photons in a pair as well as the tight pair creation times, it has been shown that two-photon frequency conversion processes such as two-photon absorption and sum-frequency generation are linear in input flux rather than quadratic, as with classical laser light. Building off oftheestab- lished experimental foundation of entangled two-photon absorption and entangled photon pair up-conversion, I present a source of entangled photon pairs based off of periodically-poled magnesium oxide-doped lithium niobate capable of single-photon-level frequency conversion. This source is optimized for high photon fluxes and low chromatic dispersion which can be verified through sum-frequency generation in an identical, second crystal. This is a first step towards demonstrating time-domain quantum spectroscopy in biological media.

Primary author: Mrs GUNTHER, Aimee (Institute for Quantum Computing, University of Water- loo)

Co-author: Dr JENNEWEIN, Thomas (Institute for Quantum Computing, University of Water- loo)

Presenter: Mrs GUNTHER, Aimee (Institute for Quantum Computing, University of Waterloo)

Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 378 2016 CAP Congr … / Report of Contributions Upgrades to the ATLAS detector at …

Contribution ID: 1385 Type: Invited Speaker / Conférencier invité

Upgrades to the ATLAS detector at the LHC Thursday, 16 June 2016 14:00 (30 minutes)

Following the successful operation of the Large Hadron Collider (LHC) at collision center-of-mass energy of 7 and 8 TeV in the period 2010-2012, the LHC is now colliding protons at the unprecedented center-of-mass energy of 13 TeV. Plans are underway to significantly increase the luminosity of the LHC over the next twenty years through various upgrades of the accelerator complex. In order to take advantage of the planned significant increase in instantaneous luminosity beyond the original nominal design, important upgrades to the ATLAS and CMS experiments are being prepared. In this talk, scientific motivations for the upgade of the ATLAS experiment will be presented. The overall ATLAS upgrade program, including both the so-called Phase-I (2019) and Phase-II (2024) upgrades, will also be described, with emphasis on projects with Canadian efforts.

Primary author: VACHON, Brigitte (McGill University (CA)) Presenter: VACHON, Brigitte (McGill University (CA)) Session Classification: R2-3 Testing Fundamental Symmetries II (PPD-DNP-DTP) / Tests de symétries fondamentales II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 379 2016 CAP Congr … / Report of Contributions Authentic Assessment in Physics: …

Contribution ID: 1386 Type: Oral (Non-Student) / orale (non-étudiant)

Authentic Assessment in Physics: A case study Wednesday, 15 June 2016 13:45 (15 minutes)

Authentic assessment [1,2], or assessment of real-world tasks that demonstrate the student’s acquisition of skills and knowledge, is a paradigm that is growing in importance in higher education. In Ontario, this form of assessment is taking on greater relevance as the Province aims to connect the funding of higher education programs to the graduates’ demonstrated achievement of gaining job and career-ready skills [3]. How should we do so in Physics, where the philosophy is to create abstract models of reduced complexity? At the University of Windsor, retired Writing Instructor Ron Dumouchelle and I have developed a course entitled ‘Technical Communication Skills’ that is a multi-genre course with several authentic assessment tasks, where students demonstrate their achievement of multiple program-level learning goals. In this talk, I will present the course design for this fourth year course that enables students to produce multimedia instructional modules [4] on several topics of Physics Instruction.

[1] Stiggins, R. J. (1987). The design and development of performance assessments. Educational Measurement: Issues and Practice, 6, 33-42. [2] Wiggins, G. P., & McTighe, J. (1998). Understanding by design. Alexandria, VA: Association for Supervision and Curriculum Development. [3] https://www.tcu.gov.on.ca/pepg/audiences/universities/uff/UniversityFundingFormulaConsultationReport_2015.pdf [4] http://www1.uwindsor.ca/physics/student-projects

Primary author: RANGAN, Chitra (University of Windsor) Co-author: Mr DUMOUCHELLE, Ron (University of Windsor (retd.)) Presenter: RANGAN, Chitra (University of Windsor) Session Classification: W2-2 Curriculum Development and Revitalization (DPE) / Développe- ment et revitalisation des programmes (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 380 2016 CAP Congr … / Report of Contributions Improved dark matter search resul …

Contribution ID: 1387 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Improved dark matter search results from PICO-2L Run 2 Monday, 13 June 2016 16:45 (15 minutes)

New data are reported from a second run of the 2-liter PICO-2L C3F8 bubble chamber with a total exposure of 129 kg-days at a thermodynamic threshold energy of 3.3 keV. These data show that the measure taken to control particulate contamination in the superheated fluid resulted in the absence of the anomalous background events observed in the first run of this bubble chamber. One single nuclear-recoil event was observed in the data, consistent both with the predicted background rate from neutrons and with the observed rate of unambiguous multiple-bubble neutron scattering events. The chamber exhibits the same excellent electron-recoil and alpha decay rejection aswas previously reported. These data provide the most stringent direct detection constraints onweakly interacting massive particle (WIMP)-proton spin-dependent scattering to date for WIMP masses < 50 GeV/c2.

Primary author: AMOLE, Chanpreet (Queen’s University) Presenter: AMOLE, Chanpreet (Queen’s University) Session Classification: M3-5 Cosmic frontier: Dark matter I (PPD) / Frontière cosmique: matière sombre I (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 381 2016 CAP Congr … / Report of Contributions ** WITHDRAWN** Photocarrier D …

Contribution ID: 1388 Type: Poster (Non-Student) / affiche (non-étudiant)

** WITHDRAWN** Photocarrier Dynamics in Si and SiGe Nanowires Studied Using Optical-Pump Terahertz-Probe Measurements Tuesday, 14 June 2016 19:54 (2 minutes)

CONTENT For this work, Si and SiGe nanowires (NWs) were grown in a hot-wall reduced pressure chemical vapor deposition system via the vapor-liquid-solid mechanism on both silicon and sapphire substrates using gold as a catalyst. These NW samples were characterized using optical-pump terahertz-probe (OPTP) transmission experiments. The influence of the experimental conditions on the photocarrier dynamics has been investigated by studying the impact of the substrate, the Ge content, the excitation wavelength, the pump fluence and the sample temperature on the time- resolved photoconductivity measurements. In all cases, the data curves show a rapid rise of the OPTP signal followed by a bi-exponential decay behavior with an initial decay time of ∼ 6 ps and a longer decay time of few tens of picoseconds up to 140 ps. Our results show that the capture and recombination of photocarriers by the traps present on the surface of the NWs play an important role in the observed photoconductivity dynamics.

Primary author: MORRIS, Denis (Unniversité de sherbrooke) Co-authors: Dr SALEM, Bassem (Laboratoire des technologies de la microélectronique - CNRS, France); Mr MORTIZ, Pierre (Département de physique, Université de Sherbrooke); Dr BARON, Thierry (Laboratoire des technologies de la microélectronique - CNRS, France)

Presenter: MORRIS, Denis (Unniversité de sherbrooke) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 382 2016 CAP Congr … / Report of Contributions PICO-60-RSU: A buffer liquid free …

Contribution ID: 1389 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

PICO-60-RSU: A buffer liquid free bubble chamber to search for dark matter Thursday, 16 June 2016 08:15 (15 minutes)

The PICO collaboration uses superheated liquid detectors, or “bubble chambers”, to searchfor dark matter. Recent operation of the PICO-2L and PICO-60 detectors at SNOLAB allows themost stringent constraints for WIMP dark matter interaction in the spin-dependent sector despite the presence of an anomalous background attributed to the presence of dust particulates in the superheated fluid. I this talk I will present the design of a 60kg bubble chamber in a new “Right-Side-Up” (RSU) configuration that eliminates the need for a buffer fluid and places the particulate generating materials in an inactive region of the detector.

Primary author: GIROUX, Guillaume (Queen’s University) Presenter: GIROUX, Guillaume (Queen’s University) Session Classification: R1-7 Cosmic Frontier: Dark Matter V (PPD) / Frontière cosmique: matière sombre V (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 383 2016 CAP Congr … / Report of Contributions Surface vacancy mediated pinning …

Contribution ID: 1390 Type: Poster (Non-Student) / affiche (non-étudiant)

Surface vacancy mediated pinning of the magnetisation in γ-Fe2O3 nanoparticles: A micromagnetic simulation study∗ Tuesday, 14 June 2016 19:42 (2 minutes)

Results from finite temperature stochastic LLG simulations of an atomistic core-shell modelof γ- Fe2O3 spherical nanoparticles are presented. The radial surface anisotropy gives rise to a surface magnetisation with a Neel-like domain wall separating the magnetic poles. It is shown that the pinning of the domain wall by the oxygen anion sites plays an important role in the low temperature relaxation processes [1]. The core-shell model shows qualitative agreement with experimental results. A super-spin model with temperature-dependent anisotropy is a promising model to simulate complex hierarchical structures and the long time scale dynamics of such nanoparticles[2]. [1] T. N. Shendruk, R. D. Desautels, B. W. Southern, and J. van Lierop, Nanotechnology, vol. 18, p. 455704, 2007. [2] M. A. Kostiainen, P. Ceci, M. Fornara, P. Hiekkataipale, O. Kasyutich, R. J. M. Nolte, J. J. L. M. Cornelissen, R. D. Desautels, and J. van Lierop, ACS Nano, vol. 5, pp. 6394–6402, 2011

∗ Supported by NSERC

Primary author: Mr ALKADOUR, Bassel (Department of Physics and Physical Oceanography, Memorial University)

Co-authors: Prof. SOUTHERN, Byron (Department of Physics and Astronomy, University of Man- itoba); Mr MERCER, Jason (Department of Physics and Physical Oceanography, Memorial Univer- sity); Prof. VAN LIEROP, Johan (Department of Physics and Astronomy, University of Manitoba); Prof. WHITEHEAD, John (Department of Physics and Physical Oceanography, Memorial University)

Presenter: Mr ALKADOUR, Bassel (Department of Physics and Physical Oceanography, Memorial University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 384 2016 CAP Congr … / Report of Contributions High-dimensional quantum clonin …

Contribution ID: 1391 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

High-dimensional quantum cloning of photons Wednesday, 15 June 2016 09:45 (15 minutes)

Optimal quantum cloning machines are realized in linear optical systems by means of the sym- metrization method, a method involving the two-photon interference effect at a beam splitter. Op- timal quantum cloning has been realized with two-dimensional quantum states, qubits, and four- dimensional quantum system comprised of polarization and orbital angular momentum qubits. Nonetheless, no experimental demonstration of high-dimensional quantum cloning has hitherto been realized. Here, we perform optimal quantum cloning of photonic orbital angular momentum states belonging to Hilbert spaces with dimensions ranging from two to seven. Moreover, we perform full quantum state tomography of high-dimensional cloned states and a cloning attack on a high-dimensional quantum cryptography protocol.

Primary author: Mr BOUCHARD, Frédéric (University of Ottawa) Co-authors: Prof. KARIMI, Ebrahim (University of Ottawa); BOYD, Robert (University of Ot- tawa); Dr FICKLER, Robert (University of Ottawa) Presenter: Mr BOUCHARD, Frédéric (University of Ottawa) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 385 2016 CAP Congr … / Report of Contributions Relaxation of a Simulated Lipid Bil …

Contribution ID: 1392 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Relaxation of a Simulated Lipid Bilayer Vesicle Compressed by an AFM Tuesday, 14 June 2016 19:12 (2 minutes)

The Atomic Force Microscope (AFM) lets us reach out and touch cells, on force and lengthscales native to them. But what physically happens when the AFM’s tip touches a cell? The membrane is a first point of contact, and that is why we begin by studying vesicles —cell membranes laid bare. Using Coarse-Grained Molecular Dynamics simulations, we study the relaxation of uniaxially compressed bilayer vesicles. The relaxation time exhibits a strong force-dependence. This suggests that the results of the widely used AFM probe are greatly dependent on the manner in which the tip is applied to a vesicle. We explain the strong force dependence of the relaxation time in terms of the undulations present in lipid bilayers, and can fit our simulations with the results of an attractive theory developed by Helfrich and Servuss. Force-compression curves are very similar to recent experiments wherein giant unilamellar vesicles were compressed in a nearly identical manner.

Primary author: MACPHERSON BARLOW, Benjamin (University of Ottawa) Co-author: JOOS, Bela (University of Ottawa) Presenter: MACPHERSON BARLOW, Benjamin (University of Ottawa) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 386 2016 CAP Congr … / Report of Contributions Towards reducing the dose needed …

Contribution ID: 1393 Type: Invited Speaker / Conférencier invité

Towards reducing the dose needed for Megavoltage Cone Beam CT Thursday, 16 June 2016 09:30 (30 minutes)

Megavoltage (MV) x-ray beams generated from a linear accelerator (linac) are commonly used to deliver the prescribed radiation dose to the tumor while minimizing the dose to the surrounding healthy tissues. The geometric accuracy of such treatment is crucial for its success. Currently, there are a number of ways to verify the positional accuracy of the treated target. Megavoltage cone- beam computed tomography (MV-CBCT) is the simplest and arguably least error-prone solution of all the commercially available volumetric imaging methods to locate the position of the target in the treatment room prior to the start of the treatment. MV-CBCT uses an electronic portal-imaging device (EPID) attached to the linac to acquire CT data by rotating the MV x-ray source, emitting a cone beam, and the EPID around the patient. However, due to poor x-ray quantum efficiency of EPIDs that are utilized in clinics presently, the imaging dose required to achieve sufficient contrast to visualize and delineate soft tissue targets can be prohibitively large for daily verification with this imaging modality. Recently, a family of detector designs that have the potential to solve the low x-ray conversion efficiency challenge faced by current clinical EPID systems has been investigated. In these,over an order of magnitude higher quantum efficiency, when compared to current clinical systems, is achieved by using a few centimeters thick x-ray conversion layer. To maintain spatial resolution the x-ray conversion layer is segmented in the directions parallel to the incident x-rays.

Primary author: Dr TEYMURAZYAN, Aram Presenter: Dr TEYMURAZYAN, Aram Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 387 2016 CAP Congr … / Report of Contributions SELECTION OF OPTIMAL REGRE …

Contribution ID: 1394 Type: Oral (Non-Student) / orale (non-étudiant)

SELECTION OF OPTIMAL REGRESSION MODELS FOR INSTRUMENT CALIBRATION Thursday, 16 June 2016 09:45 (15 minutes)

Instrument calibration is an integral part of many physical and chemical measurement systems. Commonly, instrument response is plotted against a series of known values (standards) ofthe measurand to establish a calibration line by linear regression. For example, the relationship is established between emitted light intensity versus concentration in Emission Spectrometry, or ion counts against concentration in quantitative Mass Spectrometry. In the simplest and ideal situation, signal intensity is assumed to be directly proportional to the concentration. In reality, however, significant errors can originate from uncertainty of the measurement, as well asnon- linear dependence of the response within the chosen dynamic range. In this presentation, we will discuss about the selection of optimal calibration models and evaluate their relative effectiveness using simulated and practical examples.

Primary author: DE SILVA, Nimal (University of Ottawa) Co-authors: CORNETT, Jack (University of Ottawa); GUÉRIN, Nicolas (CNL); ZHANG, Ping (Uni- versity of Ottawa); MOHANTY, Smita (University of Ottawa) Presenter: DE SILVA, Nimal (University of Ottawa) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 388 2016 CAP Congr … / Report of Contributions SIMULATIONS OF ENERGETIC P …

Contribution ID: 1395 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

SIMULATIONS OF ENERGETIC PARTICLES INTERACTING WITH DYNAMICAL MAGNETIC TURBULENCE Monday, 13 June 2016 16:45 (15 minutes)

We explore the transport of energetic particles in interplanetary space by using test-particle simulations. In previous work such simulations have been performed by using either magneto-static turbulence or undamped propagating plasma waves. In the current work we simulate for the first time particle transport in dynamical turbulence. To do so we employ three models, namely the damping model of dynamical turbulence, the random sweeping model, and the nonlinear anisotropic dynamical turbulence. We also added dissipation effects to the power spectrum, an effect which is usually neglected. We compute parallel and perpendicular diffusion coefficients and compare our numerical findings with solar wind observations. We show that good agreement can befound between simulations and the Palmer consensus range for all dynamical turbulence models if using appropriate values for different parameters in consistent with interplanetary space at 1 AU helio- centric distance. In particular we show that best fit between simulations and observation occurs when the ratio of turbulent magnetic field and mean field is δB/B0 =0.75.

Primary author: Mr HEUSEN, Martin (University of Manitoba) Co-author: Prof. SHALCHI, Andreas (The University of Manitoba) Presenter: Mr HEUSEN, Martin (University of Manitoba) Session Classification: M3-7 Atmospheric and Space Physics I (DASP) / Physique atmo- sphérique et de l’espace I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 389 2016 CAP Congr … / Report of Contributions The Influence of Turbulence on the…

Contribution ID: 1396 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

The Influence of Turbulence on the Transport of Energetic Particles Monday, 13 June 2016 16:30 (15 minutes)

We explore the influence of magnetic turbulence on the transport of energetic particles, mainly cosmic rays, by using test-particle simulations. We compute parallel and perpendicular diffusion coefficients for two-component turbulence, isotropic turbulence, a model based on Goldreich-Sridhar scaling, noisy reduced magneto-hydrodynamic turbulence, and a noisy slab model. We have shown that for all considered turbulence models, the diffusion coefficients are similar. They have thesame rigidity dependence and only the absolute values of the diffusion coefficients are different. This conclusion is in agreement with recent analytical findings based on the unified nonlinear transport theory indicating that only fundamental properties of turbulence such as the length scales and magnetic fields control the diffusion coefficients. To double-check the validity andaccuracy of our numerical results, we use a second test-particle code. We show that both codes provide very similar results confirming the validity of our conclusions.

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 390 2016 CAP Congr … / Report of Contributions Dynamical polarizability of the …

Contribution ID: 1397 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Dynamical polarizability of the pseudospin-1 dice lattice Tuesday, 14 June 2016 19:56 (2 minutes)

The two-dimensional dice lattice is the pseudospin-1 analogue the pseudospin-1/2 Dirac material graphene. The dice-lattice low-energy excitation spectrum consists of the Dirac cone dispersion found also in graphene, with an additional dispersionless flat band intersecting the Dirac point. We present theoretical results for the electronic dynamical polarization function in the material. This fundamental entity in many-body physics renormalizes the Coulomb interaction by accounting for the screening of charges. From the polarizability, many interesting phenomena can be described, such as plasmonic excitations or Friedel oscillations. The flat band in the dice lattice provides distinct alteration of the typical physics seen in graphene.

Primary author: MALCOLM, John (University of Guelph) Co-author: Prof. NICOL, Elisabeth (University of Guelph) Presenter: MALCOLM, John (University of Guelph) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 391 2016 CAP Congr … / Report of Contributions The Physics Educator: Findings an …

Contribution ID: 1399 Type: Oral (Non-Student) / orale (non-étudiant)

The Physics Educator: Findings and Insights Wednesday, 15 June 2016 14:15 (15 minutes)

The focus of this talk will be on the findings and insights of mentoring and editing atextwhich focused on the essence of ‘story’, as it relates to the experiences of physicists and physics educators at the tertiary level. The original call for chapters indicated, that each author who iseither a physicist and/or a physics educator address their career path to their current role as a physicist or physics educator, or they could address their present situation including what each does as a physicist or physics educator, possibly including a discussion of the courses taught and strategies which they have found effective in their teaching environment, the issues faced, and lastly their vision for the future of physics as a discipline – a science and the trajectory of physics education research. The contributors present their perspectives and research findings both within and outside the lines of traditional frameworks whereby they infuse context, events, and experience; our inten- tion is to present a number of perspectives of the work roles of physicists and physics educators and researchers within post-secondary education (PSE). The views of the experienced instructor include first-hand insights and details of practice that are instructive, and somewhat unique.This unique post-secondary perspective, with its diversity, provides a rich source of authenticity.

Primary author: Dr MACLEOD, Katarin (St. Francis Xavier University) Co-author: Dr RYAN, Thomas (Nipissing University) Presenter: Dr MACLEOD, Katarin (St. Francis Xavier University) Session Classification: W2-2 Curriculum Development and Revitalization (DPE) / Développe- ment et revitalisation des programmes (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 392 2016 CAP Congr … / Report of Contributions Trace Gas Measurements in the Ca …

Contribution ID: 1400 Type: Oral (Non-Student) / orale (non-étudiant)

Trace Gas Measurements in the Canadian High Arctic using Infrared Emission Spectroscopy Wednesday, 15 June 2016 09:30 (15 minutes)

The High Arctic experiences prolonged periods of total darkness in the winter and continuous day- light in the summer, influencing the atmosphere and its composition in ways that are still notfully understood. Conducting atmospheric measurements in this remote region is challenging, particularly during polar night when solar-viewing instruments are not operational. By using infrared emission spectroscopy, which is independent of sunlight, we are able to document year-round the total column abundances of carbon monoxide (CO), methane (CH4), nitrous oxide (N2O), and ozone (O3). Measurements are made at the Polar Environment Atmospheric Research Laboratory (PEARL, Eureka, Nunavut, Canada, 80.05 N, 86.42 W) using Atmospheric Emitted Radiance Inter- ferometers (AERIs) to measure the absolute downwelling infrared emission from the atmosphere between 500 and 3000 cm-1. The instruments have a moderate resolution of 1 cm-1 and provide total column trace gas measurements with high sensitivity to the lower troposphere. The Univer- sity of Idaho’s Polar AERI (P-AERI) was installed at PEARL from March 2006 to February 2009 while the second instrument, the E-AERI (Extended-range AERI from 400 cm-1), was installed in October 2008 and is still operating today. The combined measurements allow us to investigate the total column densities of CO, CH4, N2O and O3 at PEARL from 2006 to 2015. These two datasets are compared and validated, during sunlit hours, with measurements made by a high-resolution solar-viewing infrared spectrometer (Bruker 125HR) on-site. Preliminary results indicate that the AERI and Bruker 125HR O3 and CO measurements are highly correlated, with a correlation coefficient of 0.95 and 0.83 respectively (unsmoothed). We present the annual, seasonal anddiurnal variability of trace gases in the high Arctic, highlighting ozone depletion events as well as biomass burning events that were observed between 2006 and 2015.

Primary author: TRAN, Sophie (Department of Physics, University of Toronto, Toronto, ON, Canada)

Co-authors: LUTSCH, Erik (Departement of Physics, University of Toronto, Toronto, ON, Canada); STRONG, Kimberly (Department of Physics, University of Toronto, Toronto, ON, Canada); PALM, Mathias (Insti- tute of Environmental Physics, University of Bremen, Bremen, Germany); ROWE, Penny (NorthWest Research Associates, Redmond, WA, USA); CONWAY, Stephanie (Departement of Physics, University of Toronto, Toronto, ON, Canada); MARIANI, Zen (Cloud Physics and Severe Weather Section, Envi- ronment and Climate Change, Toronto, ON, Canada)

Presenter: TRAN, Sophie (Department of Physics, University of Toronto, Toronto, ON, Canada)

Session Classification: W1-8 Observations In Situ and Remote Sensing I (DASP) / Observa- tions in situ et détection à distance II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 393 2016 CAP Congr … / Report of Contributions Swarm Canada: Accomplishments …

Contribution ID: 1401 Type: Oral (Non-Student) / orale (non-étudiant)

Swarm Canada: Accomplishments and Opportunities Tuesday, 14 June 2016 09:30 (15 minutes)

Launched in November 2013, European Space Agency’s Swarm mission* is now halfway through its nominal science mission. Swarm’s on-board experiments, including the Canadian Electric Field Instruments, continue to collect scientific data daily in conjunction with ground-based observatories in Canada and elsewhere. Numerous scientific investigations have been completed or are underway, covering topics from electrodynamics of auroral arcs and pulsations to polar cap patches, Poynting flux, ionospheric structure and thermal balance, and ULF waves. However, only asmall fraction of Swarm data have been exploited scientifically, and countless opportunities remain. This talk will summarize the capabilities and potential of the Swarm data with the aim of stimulating new projects and collaborations.

Acknowledgement: Canada’s participation in Swarm is supported by the Canadian Space Agency and NSERC.

Primary author: Prof. KNUDSEN, David (University of Calgary) Co-author: Dr BURCHILL, Johnathan (University of Calgary) Presenter: Prof. KNUDSEN, David (University of Calgary) Session Classification: T1-4 Ground-based and In Situ Observations I (DASP) / Observations sur terre et in situ I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 394 2016 CAP Congr … / Report of Contributions Advances in Raman spectroscopy a …

Contribution ID: 1402 Type: Invited Speaker / Conférencier invité

Advances in Raman spectroscopy and its applications Thursday, 16 June 2016 14:00 (30 minutes)

This talk focuses on the investigation and development of an integrated portable optical biosensor for label-free detection of biomolecules, based on enhanced Raman techniques. This enhancement is achieved by integrating hollow core photonic crystal fibers (HC-PCF) and nanoparticles. Chal- lenges in developing a robust, reusable and reliable sensors will be discussed as well as methods to mitigate these challenges. We will also discuss the use of this biosensor in a variety of applications including the detection of Heparin in blood and the detection of Leukemia cells.

Primary author: Prof. ANIS, Hanan (Faculty of Engineering, University of Ottawa) Presenter: Prof. ANIS, Hanan (Faculty of Engineering, University of Ottawa) Session Classification: R2-4 Biophotonics (DPMB-DAMOPC) / Biophotonique (DPMB-DPAMPC)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 395 2016 CAP Congr … / Report of Contributions Peak Intensity and Energy Confin …

Contribution ID: 1403 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Peak Intensity and Energy Confinement Enhancement of Airy Bullets Tuesday, 14 June 2016 19:10 (2 minutes)

Over the last few years, Airy beams have attracted an increasing interest due to their peculiar characteristics, such as accelerating propagation trajectories featuring non-dispersion along with self-healing properties. Beside their relevance for fundamental optics research, these beams have found numerous applications in several fields including, among others, the generation of curved plasma channels and optical trapping. An Airy beam propagates following a curved trajectory without diffracting along one or two spatial dimensions. Similarly, an optical pulse featured byan Airy temporal profile is not affected by dispersion during its propagation (i.e. its temporal shape remains unchanged). Thus, by combining such confinements both in time and space, it is possible to generate a 3D-confined accelerating optical beam, which does not diffract/disperse alongany coordinate, named Airy Bullet (AB). Herein, we present a numerical study of these AB dynamics, providing a technique capable of optimizing the power features associated to the spatio-temporal confinement of such a bullet. In particular, we show that by reshaping the initial spatio-temporal spectrum of the AB in order to obtain a maximal overlap with the spectral content associated with the main lobe, one is able to readily contain the spatio-temporal expansion of such a bullet.

Primary author: BONGIOVANNI, domenico (INRS) Presenter: BONGIOVANNI, domenico (INRS) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 396 2016 CAP Congr … / Report of Contributions Colloidal systems for smarter canc …

Contribution ID: 1404 Type: Invited Speaker / Conférencier invité

Colloidal systems for smarter cancer imaging and adaptive therapy Monday, 13 June 2016 15:45 (30 minutes)

Imaging is a fundamental tool in the practice of medicine. The interaction of medical imaging radiation with new materials has long been exploited to develop new and improved imaging systems and techniques. In parallel with these advances, there is increasing interest in developing new contrast agents for the diagnosis of disease. Exogenous contrast agents are non-native sources of contrast that differentially scatter, absorb, or emit medical imaging radiation (e.g., sound waves for ultrasound imaging, radiofrequency waves for magnetic resonance imaging, near IR light for photoacoustic imaging, and x-rays for computed tomography and mammography) as compared to surrounding tissues and inherent background noise such that their location can be tracked upon introduction into a patient. At the forefront of new contrast agent development are new, clinically-relevant, colloidal materials that can be activated by medical imaging radiation external to the patient and under image guidance, to characterize and treat cancer. Since the contrast agents’ in vivo distribution and interaction with radiation are strongly size- and material-dependent, a new opportunity in materials science is the creation of new colloidal systems that can be tailored for specific contrast imaging and with therapeutic properties.

This talk will focus on the development of new contrast agents that can facilitate morefocused and targeted delivery of cancer therapies to tumours for higher therapeutic ratios, and can permit the treatment of hard-to-access organs like the brain in a minimally-invasive manner. Specific examples of different hierarchical and composite contrast agents that are assembled to address and balance biological and physical challenges of contrast agent development will be given, with a focus on the use of perfluorocarbon bubbles, droplets and nanoparticles as multifunctional contrast agents for ultrasound imaging and therapy applications.

Primary author: MATSUURA, Naomi (University of Toronto) Presenter: MATSUURA, Naomi (University of Toronto) Session Classification: M3-4 Materials Characterization: Microscopy and Imaging (DCMMP) / Caractérisation des matériaux: microscopie et imagerie (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 397 2016 CAP Congr … / Report of Contributions Imaging and Temperature Sensing …

Contribution ID: 1405 Type: Invited Speaker / Conférencier invité

Imaging and Temperature Sensing using Submillimeter Radiation Monday, 13 June 2016 16:45 (30 minutes)

In recent years, nanomaterials have garnered significant attention in the effort to develop novel applications and technologies, or for the improvement of already existing ones. In particular, a strong emphasis has been placed on nanoparticle-based probes than can be used in imaging and therapeutics. Of particular interest are metal nanoparticles such as silver, platinum and gold, which following resonant excitation with light, show a surface plasmon resonance effect. An interesting by-product of this effect is the transfer of energy to the environment in the form ofheat.This typically increases the temperature of a system and finds interesting applications particularly in photothermal therapy. We have used gold nanoparticles as “contrast agents” in combination with terahertz radiation to develop a contact-free approach for heating, temperature sensing and imaging. More specifically, we exploit the change in the refractive index of water, induced by localized NIR heating of plasmonic nanostructures. The latter, namely gold nanorods, were prepared using a conventional bottom up seed-mediated technique. We observe a linear relationship correlating change in the reflected terahertz amplitude and area under the curve as a function of increasing temperature. This was translated to a thermometric relationship allowing for temperature sensing following an induced heat stimulus. We extended our results to the porcine skin model system in order to mimic the photothermal effect and demonstrated the capacity to sense the temperature and map its distribution in the localized injection site, following controlled NIR plasmonic heating. As a result, we have developed a terahertz biological thermometer.

Primary author: Prof. NACCACHE, Rafik (Concordia University) Co-authors: Prof. GOVOROV, Alexander (Ohio University); Dr MAZHOROVA, Anna (Institut National de la Recherche Scientifique - Centre EMT); Prof. VETRONE, Fiorenzo (Institut National de la Recherche Scientifique - Centre EMT); Mr KHORASHAD, Larousse Khosravi (Ohio University); Prof. RAZZARI, Luca (Institut National de la Recherche Scientifique - Centre EMT); Prof. CLERICI, Matteo (University of Glasgow); Prof. MORANDOTTI, Roberto (Institut National de la Recherche Scientifique - Centre EMT)

Presenter: Prof. NACCACHE, Rafik (Concordia University) Session Classification: M3-4 Materials Characterization: Microscopy and Imaging (DCMMP) / Caractérisation des matériaux: microscopie et imagerie (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 398 2016 CAP Congr … / Report of Contributions Plasma-Based Coatings in Biomate …

Contribution ID: 1406 Type: Poster (Non-Student) / affiche (non-étudiant)

Plasma-Based Coatings in Biomaterial Engineering Tuesday, 14 June 2016 19:14 (2 minutes)

Plasma-based processes are increasingly finding applications in a variety of fields, including biomaterial engineering and medicine. This proliferation, in part, is due to the fact that the plasma state of matter not only allows surface modifications with monoatomic layer precision, but alsooffers the opportunity of synthesizing new materials and nanostructures that could influence the cell response, or could be used as treatment delivery vehicles. The quality of implants for the recipients of medical prosthetics determines the quality of their lives. These implants in addition to their bio- and haemocompatibility characteristics must also possess the required mechanical, electrical or tribological properties. Designing materials that could simultaneously fulfil all these characteristics constitutes a significant challenge to the biomaterial engineering community. The application of plasma-based thin film coatings or synthesized layers offers the possibility of surface engineering of medical implants and medical tools. In this presentation we will give a brief highlight of plasma-based technologies commonly in use, along with some examples of their applications for biomaterial surface engineering.

Primary author: WOLFE, Sean (Plasmionique Inc.) Co-authors: SARKISSIAN, Andranik (PLASMIONIQUE Inc); PATERNOSTER, Carlo (Laval Univer- sity); CÔTÉ, Claude (Plasmionique Inc.); MANTOVANI, Diego (Laval University); CLOUTIER, Maxime (Laval University); TOLOUEI, Ranna (Laval University); PORTER, Ryan (Plasmionique Inc.); TUR- GEON, Stéphane (Laval University)

Presenter: WOLFE, Sean (Plasmionique Inc.) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 399 2016 CAP Congr … / Report of Contributions Formation of an all–optical …

Contribution ID: 1407 Type: Oral (Non-Student) / orale (non-étudiant)

Formation of an all–optical extreme–ultraviolet Fresnel zone plate by perturbative high harmonic wavefront control Wednesday, 15 June 2016 10:15 (15 minutes)

High harmonic generation is a non-perturbative nonlinear optical process [1], quite different from conventional perturbative nonlinear optics [2]. These two regimes are bridged by the nonlinear wave mixing process in high harmonic generation [3], in which a harmonic extreme ultraviolet (XUV) photon with frequency Ω is a combination of n1 driving photons with frequency ω1 and n2 perturbing photons with frequency ω2 (Ω=n1ω1+n2ω2) and its intensity scales as I2^n2, where I2 is the perturbing beam intensity. Here we demonstrate a perturbative control scheme to the high harmonic XUV wavefront. To generate an all-optical Fresnel zone plate that focuses the XUV radiation, we intersect the intense driving laser pulse for high harmonic generation, with a tightly focused, weak, control pulse. We use both experiment and simulation to demonstrate the all-optical zone plate. Experimentally, we probe and correct the intrinsic XUV divergence due to the intensity gradient of the driving beam. In addition, SWORD (Spectral Wavefront Optical Reconstruction by Diffraction) [4] measurements quantitatively characterized the zone plate focal spot positions and sizes. Extending beyond our current experiment, simulations predict that by increasing the driving beam size and focusing the perturbing beam more tightly, the zone plate focal spot sizes can reach sub-micrometer dimension resulting in an increase in intensity of 4-6 orders-of-magnitude. The intensity increase that we predict will allow applications such as XUV pump-XUV probeex- periments, XUV light monochromation, and XUV nonlinear optics. In addition, the perturbative control concept can be generalized for other versatile all-optical XUV optics besides a zone plate.

1. P. B. Corkum, Phys. Rev. Lett. 71, 1994–1997 (1993). 2. R. W. Boyd, Nonlinear Optics (Academic, New York, 2008), 3rd ed. 3. J. B. Bertrand, et al., Phys. Rev. Lett. 106, 023001 (2011). 4. E. Frumker, et al., Opt. Lett. 34, 3026–3028 (2009).

Primary author: LI, Zhengyan (JASLab, National Research Council and University of Ottawa)

Co-authors: BROWN, Graham (JASLab, National Research Council and University of Ottawa); CORKUM, Paul (JASLab, National Research Council and University of Ottawa)

Presenter: LI, Zhengyan (JASLab, National Research Council and University of Ottawa) Session Classification: W1-9 Nonlinear Optics and High Field Physics (DAMOPC) / Optique non linéaire et physique en champs intenses (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 400 2016 CAP Congr … / Report of Contributions Single-shot holographic measurem …

Contribution ID: 1408 Type: Oral (Non-Student) / orale (non-étudiant)

Single-shot holographic measurement of attosecond pulses and the time-dependent field of an ultrashort pulses Monday, 13 June 2016 14:15 (15 minutes)

We demonstrated simultaneous all-optical, single-shot holographic measurement of attosecond high harmonic pulses and a femtosecond laser pulse. To achieve this, we introduce a weak laser beam into the harmonic generation medium together with the strong driving laser field. The weak laser field perturbs the trajectories of ionized electrons that are responsible for highhar- monic generation and therefore diffracts the harmonic radiations. Since the periodic structure in the near-field harmonic radiations implies cross-correlation between the attosecond pulse andthe perturbing laser pulse, we can achieve temporal characterization by measuring the diffracted high harmonic radiations. However, since the far-field intensity distribution is insensitive to the near-field harmonic radiations, we superposed a reference X-ray beam generated from a secondary harmonic source. The measured harmonic spectrograph shows dense fringes that originate from two-source interference. The rapid oscillation enables us to reconstruct the near-field harmonic radiations by applying Fourier transform. As a result, we determined the attosecond pulses, showing a pulse duration of 390 as, and the time-dependent electric field of the perturbing pulse from the retrieved near-field image. The duration of the perturbing pulse that we obtain is consistent with the result achieved by a conventional FROG measurement.

The single-shot measurement method is a fast, robust and effective way to monitor high harmonic or attosecond pulses. Consequently, it will be a new technique to probe ultrafast strong-field interactions in many materials.

Primary author: Dr KO, Dong Hyuk (Joint Attosecond Science Laboratory, University of Ottawa and National Research Council of Canada)

Co-author: Prof. CORKUM, Paul B. (Joint Attosecond Science Laboratory, University of Ottawa and National Research Council of Canada)

Presenter: Dr KO, Dong Hyuk (Joint Attosecond Science Laboratory, University of Ottawa and National Research Council of Canada) Session Classification: M2-3 Ultrafast and Time-Resolved Processes (DAMOPC) / Procédés ultrarapides et résolus dans le temps (DPAMPC)

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 401 2016 CAP Congr … / Report of Contributions Electron Localization in Group III- …

Contribution ID: 1409 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Electron Localization in Group III-V Semiconductor Compound Alloys Tuesday, 14 June 2016 19:14 (2 minutes)

We explore the band structures of new III-V material zinc blende alloys composed of B, N, Ga, As, In, Sb, and Bi for 1.55 μm wavelength telecommunication lasers and their corresponding electron localization at atomic sites from first principles. Engineering III-V semiconductors by mixing modifies their electronic properties including band gaps and lattice constants that are typicallya blend of the original compounds and elements. Isoelectronic elements often result in undesirable effects. Electron localization in the vicinity of band edges affects the efficiency of carrier transport and recombination in lasers and solar cells. A new method has been developed to determine the electron localization from muffin tin radii (atomic sites) using the scheme of outlier detection with quartiles of electron probabilities. The advantage of this method is the ability to distinguish a strongly localized electron within the atomic muffin tin radius from a baseline of delocalized electrons. Comparing the results with the unfolded band structures’ Bloch character; the outlier method is in general agreement. The industry standard of InGaAs for 1.55 μm is shown to havethe least amount of localized electronic states near the band edges. Alternatively, we find that the electron localization is increased, noticeably with the addition of B and Bi, which affects both radiative and non-radiative recombination rates. To accommodate future Group III-V semiconductor band engineering, we suggest design criteria to facilitate the prediction of localization in new alloys.

Primary author: PASHARTIS, Christopher (McMaster) Co-author: RUBEL, Oleg (McMaster University) Presenter: PASHARTIS, Christopher (McMaster) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 402 2016 CAP Congr … / Report of Contributions DHCAL with Minimal Absorber: …

Contribution ID: 1410 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

DHCAL with Minimal Absorber: Measurements with Positrons Thursday, 16 June 2016 09:30 (15 minutes)

The CALICE Digital Hadron Calorimeter (DHCAL) is a highly-granular 1m3 large prototype, based on Resistive Plate Chambers (RPCs) with digital readout of 1x1 cm2 pads. In special tests, 50 of its active layers were exposed to low energy particle beams, without interleaved absorber plates. The thickness of each layer corresponded approximately to 0.29 radiation lengths or 0.034 nuclear interaction lengths, defined mostly by the copper and steel skins of the detector cassettes. The results of the measurements performed at the Fermilab test beam with positrons in the energy range of 1 to 10 GeV will be presented and compared to simulations based on GEANT4. It is found that the default GEANT4 simulation of electromagnetic showers is not able to reproduce the measurements of the energy resolution and the detailed shower shapes. With the use of the so-called ‘Option 3’ or ‘_EMY’ good to excellent agreement is obtained.

Primary author: FREUND, Benjamin (Universite de Montreal (CA)) Co-authors: BILKI, Burak (University of Iowa (US)); NEUBUSER, Coralie (Deutsches Elektro- nen-Synchrotron (DE)); REPOND, Jose (Argonne National Laboratory) Presenter: FREUND, Benjamin (Universite de Montreal (CA)) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 403 2016 CAP Congr … / Report of Contributions Dynamics of ultrafast laser proces …

Contribution ID: 1411 Type: Invited Speaker / Conférencier invité

Dynamics of ultrafast laser processing of materials Monday, 13 June 2016 11:00 (30 minutes)

Transient free electron plasma is created during the leading edge of an intense ultrafast laser pulse irradiation of a material. Subsequent interaction of this plasma with the rest of the incident light is often ignored in laser processing of materials. We will show that light-plasma interaction plays an important role resulting in polarization dependent features both on the surface and inside the bulk. Local field enhancement leads to asymmetric electron density distribution that is eitherpar- allel or perpendicular to the laser polarization depending on the transient plasma density. We demonstrate polarization effects in ablation of silicon and polymethylmethacrylate, and in refractive index modification of silica glass.

Primary author: BHARDWAJ, Ravi (University of Ottawa) Co-author: RAMUNNO, Lora (University of Ottawa) Presenter: BHARDWAJ, Ravi (University of Ottawa) Session Classification: M1-6 Laser-Plasma Interactions (DPP-DAMOPC) / Interactions laser- plasmas (DPP-DPAMPC)

Track Classification: Plasma Physics / Physique des plasmas (DPP)

September 29, 2021 Page 404 2016 CAP Congr … / Report of Contributions Can gravity stabilize a topological …

Contribution ID: 1412 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Can gravity stabilize a topological quantum memory at finite temperature? Tuesday, 14 June 2016 19:22 (2 minutes)

We study the existence of stable topological quantum memory at finite temperature. This aids in tackling the fundamental problematic of storing quantum information for macroscopically significant times without the use of external intervention in the form of error correction. It has been argued before that a gravitational attraction could confine the anyonic excitations in a topological material, thus preventing them from altering the topological information stored in the system. This idea has led Hamma et al. (2009) to propose a model in which thetoric code qubits are coupled to a bosonic bath materializing the gravitational force. Although this confinement is well established for ordinary matter, it has not been observed beforefor Z2-type excitations, i.e., particles whose mass is preserved only modulo 2. We study this question using numerical simulations wich are performed on a continuous lattice in which the thermal processes were limited to creation, annihilation, and diffusion, with the latter being constrained by an additional energy cost. While preliminary data does not indicate the presence of a defect density threshold in the topological phase below which open strings are confined and the topological order remains intact, our results do not dismiss its existence conclusively and warrant further inquiry.

Primary authors: Prof. POULIN, David (University of Sherbrooke); GOBEIL, Thomas (University of Sherbrooke)

Presenter: GOBEIL, Thomas (University of Sherbrooke) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 405 2016 CAP Congr … / Report of Contributions Intrinsic instability of metal- …

Contribution ID: 1413 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Intrinsic instability of metal-trihalide perovskite solar cell Tuesday, 14 June 2016 19:12 (2 minutes)

Metal-trihalide perovskite is a new promising third generation active material for solar cell applications. The material is crystallized in a perovskite structure ABX3, where A is an organic cation (e.g. formamidinium), B is the metal cation (lead) and X is the halide anion (iodine). Perovskites exhibit the power conversion efficiency, which is comparable to silicon photovoltaic devices. Per- ovskite material can be synthesized using low-temperature and low-cost method, combined with the ability to be made flexible, tunable band gap, broad range of absorption spectrum, and highcar- rier mobility required for solar cells. Although the properties are promising, there are challenges to overcome before perovskite solar cells can be viewed as a competitor to silicon technology. It is commonly assumed that the reaction with water or oxygen in the external environment leads to a poor stability of hybrid halide materials. Its instability appears like a spontaneous phase separation into the formamidinium iodide and lead(II) iodide. Here, we aim to use first-principles calculations to capture energies of the material degradation. Our calculations suggest that the decomposition is exothermic, independent of the water or oxygen in the external environment. It means that the poor chemical stability is intrinsic to metal-trihalide perovskite structure. Now we are working on understanding of the instability mechanism in virtue of electrostatic potential energy of the metal-trihalide perovskite structure. The result will guide the search for materials with improved stability.

Primary author: Mr ZHENG, Chao (McMaster University) Co-authors: Mr TENUTA, Eric (McMaster Univserity); RUBEL, Oleg (McMaster University) Presenter: Mr ZHENG, Chao (McMaster University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 406 2016 CAP Congr … / Report of Contributions GRASP: a free app to manage grou …

Contribution ID: 1414 Type: Oral (Non-Student) / orale (non-étudiant)

GRASP: a free app to manage group work and active learning classrooms Wednesday, 15 June 2016 14:00 (15 minutes)

In teacher-centered classrooms, instructors know in advance what will happen in 5, 10 or 20 minutes time. In an active learning classroom, students control the learning sequence. Hence, many instructors have trouble managing many groups working simultaneously. This is known as the “Orchestration load” problem in learning sciences. A simple case is that of a problem session with N groups working on the a given number of problems. It is possible that one group is very efficient and can solve 3 or 4 problems quickly before they request help from the instructor. Suppose that a noticeably small moment later, another group requests help too. However, this second group is still struggling with the very first question. Typically, instructors will help the group that re- quested help first. This creates an even greater lag before the second group completes theirfirst question. We developed a free mobile application called GRASP (Group Response and Ambient Student Participation system) to avoid these issues and provide useful data for real time classroom management as well as exportable data to analyze your active learning classrooms. We will demonstrate the ease of use of GRASP, some data collected and the process that any attendee can use to adopt the app in their courses.

Primary author: LASRY, Nathaniel (John Abbott College) Co-authors: Prof. WHITTAKER, Chris (Dawson College); Dr CHARLES, Elizabeth (Dawson Col- lege); Dr LENTON, Kevin (Vanier College); Prof. DUGDALE, Michael (John Abbott College) Presenter: LASRY, Nathaniel (John Abbott College) Session Classification: W2-2 Curriculum Development and Revitalization (DPE) / Développe- ment et revitalisation des programmes (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 407 2016 CAP Congr … / Report of Contributions An Asynchronous Peer Instruction …

Contribution ID: 1415 Type: Oral (Non-Student) / orale (non-étudiant)

An Asynchronous Peer Instruction Platform Wednesday, 15 June 2016 15:15 (15 minutes)

Few pedagogical approaches have been as well documented in physics education research as Peer Instruction as developed by Eric Mazur at Harvard University 25 years ago. Peer instruction is an interactive process that takes place in real-time between students in a classroom. However, could Peer Instruction be used asychronously? The utility of asynchronous Peer Instruction is evident for blended and e-learning approaches (MOOCs in particular). Furthermore, as instructors shift more of their classroom content to preparatory activities given to students before class (as with Just in Time Teaching and flipped classroom) asynchronous Peer Instruction platforms also provide an effective way to prepare students for class. We describe the development in three Montreal-based Cegeps of a Peer Instruction platform called DALITE. We also describe its migration onto the Open edX platform with use cases from an MITx physics MOOC and a HarvardX course called Justice.

Presenter: LASRY, Nathaniel (John Abbott College) Session Classification: W3-2 Teaching Physics to a Wider Audience (DPE) / Enseigner la physique à un auditoire plus vaste (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 408 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Study of Mesop …

Contribution ID: 1416 Type: Poster (Non-Student) / affiche (non-étudiant)

**WITHDRAWN** Study of Mesoporous Silica Hybrid Nanoparticles and their Biocompatibility Tuesday, 14 June 2016 19:36 (2 minutes)

Mesoporous silica nanoparticles (MSNs) have attracted a lot of attention recently due to their versatile applications in biomedical field. The origin of this is related to the nature of nanometer size pores which create a huge surface area to harbor drug molecules and act as potential carriers in biological systems. The charged surface of MSNs is also highly instrumental in inviting theother inorganic or organic species to produce inorganic – or organic – silica hybrid nanomaterials with even better drug delivery functionalities than MSNs. In the present work we have synthesized hybrid MSN with incorporation of Au and Ag nanoparticles and investigated their structure and properties using microscopy and dynamic light scattering. Biocompatibility of the hybrid nanoparticles has been investigated by performing hemolysis.

Primary author: Dr AHLUWALIA, Gurinder Kaur (College of The North Atlantic) Co-author: Dr BAKSHI, Mandeep Singh (Wlfred laurier University) Presenters: Dr AHLUWALIA, Gurinder Kaur (College of The North Atlantic); Dr BAKSHI, Mandeep Singh (Wlfred laurier University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 409 2016 CAP Congr … / Report of Contributions Advancing Canada’s Martian In Si …

Contribution ID: 1417 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Advancing Canada’s Martian In Situ Spectrometer: Sub-cm Chemistry for the Ongoing Assessment of Past Habitability on Mars Thursday, 16 June 2016 10:00 (15 minutes)

Canada’s Martian spectrometer, the Alpha Particle X-ray Spectrometer (APXS), is a physics-based third-generation chemical analysis instrument carried by NASA’s newest rover on Mars. Mounted at the end of the arm of the Mars Science Laboratory rover Curiosity, the fourth and most-recent APXS conducts high-precision in situ measurements of Martian rocks and soils, playing a significant role in understanding the surface composition and geochemical processes of Mars. Sample excitation is provided by 1.1 GBq Curium-244 sources utilizing both PIXE and XRF excitation. This results in a higher sensitivity that varies only slowly across the range of geochemically important elements (Z>10) than would be the case with either excitation method alone. Use of radionuclides confers the additional benefits of low weight, low power, and high durability, all critical for space exploration missions. Trace elements can be quantified in as little as 10-20 minutes to the 10sof ppm level thanks to a Peltier-cooled silicon drift detector providing a resolution (FWHM) of 140 eV at 5.9 keV. This enables multiple laterally offset measurements of a single target during thecool Martian mornings or evenings, important for quantifying sub-cm scale chemistry.

Unlike in a laboratory setting on Earth, targets on Mars are not always flat, can be dust covered, are shrouded by 10 mbar CO2, and can be laterally heterogeneous on the scale of the field of view (FOV) of the APXS. Additionally, uncertainty in the placement of arm-mounted instruments, like the APXS, can lead to misinterpretation of spectra acquired in these heterogeneous regions. The fingerprints of a warmer, wetter Mars are hidden in the chemistry, often at a scale thatdoesnot fill the dime-sized APXS FOV. Oversampling targets with multiple APXS measurements inclose proximity and combining these spectra with images from the rover-arm-mounted Mars Hand Lens Imager allows us to localize the APXS FOVs, mitigating placement uncertainty, compensate for the effects of cm-scale surface relief, and arrive at sub-cm-scale chemistry. Quantitative chemistry at these small scales, including elements important to life such as P and S, is critical for elucidating the formation mechanisms of ancient Mars and further contributes to Curiosity‘s quest for finding and understanding past habitable environments on Mars.

Primary author: Mr VANBOMMEL, Scott (University of Guelph) Co-authors: Mr BERGER, Jeff (University of Western Ontario); Dr CAMPBELL, John L. (University of Guelph); Dr EDGETT, Ken (Malin Space Science Systems); Dr THOMPSON, Lucy (University of New Brunswick); Ms MCBRIDE, Marie (Purdue University); Dr MINITTI, Michelle (Planetary Science Institute); Mr BOYD, Nicholas (University of Guelph); Dr GELLERT, Ralf (University of Guelph) Presenter: Mr VANBOMMEL, Scott (University of Guelph) Session Classification: R1-6 General Instrumentation I (DIMP) / Physique générale des instruments I (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments

September 29, 2021 Page 410 2016 CAP Congr … / Report of Contributions Advancing Canada’s Martian In Si … et mesures (DIMP-DPIM)

September 29, 2021 Page 411 2016 CAP Congr … / Report of Contributions Dynamics in integrable quantum s …

Contribution ID: 1418 Type: Invited Speaker / Conférencier invité

Dynamics in integrable quantum systems Thursday, 16 June 2016 10:00 (30 minutes)

In integrable quantum many-body systems exact results for the ground state and the thermodynamic properties can be derived. These results are an important building block in our understanding of quantum systems with strong correlations. They are also a point of reference to judge the quality of approximative analytical and numerical approaches. Within the last years, a number of experiments on cold atomic gases have been performed studying the dynamics of almost integrable systems. In my talk I will present new theoretical results which allow to understand the transport properties of such systems and to gain insight into the connections between quantum integrability and non-ergodic dynamics.

Primary author: SIRKER, Jesko (U Manitoba) Presenter: SIRKER, Jesko (U Manitoba) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 412 2016 CAP Congr … / Report of Contributions Gas Source Development for Acce …

Contribution ID: 1420 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Gas Source Development for Accelerator Mass Spectrometry Tuesday, 14 June 2016 19:08 (2 minutes)

Caesium sputtered ion sources when used on solid graphite powdered samples have been thusfar - capable of generating a peak negative (_6^12)C-beam current of around 200-400 µA (~10^15 ions/s). However, when using CO2 gas directly as the carbon source – less of the sample is lost during the graphitization process, which is of vital importance when one has a limited amount of the material they want to analyze. Middleton (1984) tested a Cs sputtering ion source to form C-– ions directly from CO2 gas on titanium targets. At which time he produced a 10 µA beam current by using a very low CO2 flow rate of <4 µL/min. (STP) (<2 µg/min. carbon) that was shown tobe the best for high sputtering efficiencies of ~10%. Accordingly, the runtime was longer – butmoreof the carbon ions were measured. In comparison, when using TiH2 & other solid hydride samples were used to create a negative hydrogen beam (using a similar source as mentioned above), an 80-90 µA peak current was the maximum ever achieved (while 20-30 µA is typical). This report describes the development of novel gas source AMS - to ideally be able to measure tritium ions & other rare isotopes using µg sample sizes.

Primary author: BOLEN, Ryan (University of Ottawa) Presenter: BOLEN, Ryan (University of Ottawa) Session Classification: DIMP Poster Session with beer / Session d’affiches, avec bière DPIM

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 413 2016 CAP Congr … / Report of Contributions Photon detection in nEXO

Contribution ID: 1421 Type: Oral (Non-Student) / orale (non-étudiant)

Photon detection in nEXO Wednesday, 15 June 2016 14:30 (15 minutes)

The nEXO experiment is being designed to achieve unprecedented sensitivity to the neutrino-less double beta decay of 136Xenon. nEXO background rejection strategy includes in particular self- shielding, interaction site counting and energy resolution. Efficient light detection is critical for achieving the desired energy resolution of 2% (FHWM) or better. Simulations show that such an energy resolution can be achieved if at least 5% of the scintillation photons are detected, which requires mirroring most inactive surface and at least 4m2 of single photon detectors. So-called silicon photo-multipliers (SiPMs) are the only viable option as Photo-multiplier tubes are too radioactive and Avalanche Photo-Diodes yield too much electronics noise due to their low gain and are difficult to produce in mass quantity. The development of SiPMs for nEXO has already produced promising results: 1) measured limits for the radio-isotope content of SiPMs (produced by Foundation Bruno Kessler, FBK) are consistent with requirements, 2) the photo-detection efficiency exceeds 15% for FBK and Hamamatsu Photonics SiPMs at the liquid Xenon scintillation wavelength, 3) dark noise and correlated avalanche rates are within specifications. The nEXO collaboration is continuing to work with the SiPM vendors to further improve performances. The nEXO collaboration is also investigating solutions for reading out m2 of SiPMs, which has not been done before. In addition to conventional analog electronics solutions, the nEXO collaboration is investigating using the 3-dimensionally integrated technology (3D-SiPMs) that completely avoid any analog electronics and provide a mean of tagging every photon with minimum power dissipation. In this poster we will report the development of solutions for light detection in nEXO highlighting the technology that are pioneered by the collaboration, for example VUV sensitive SiPMs and 3D-SiPMs.

Primary author: RETIERE, Fabrice (TRIUMF) Presenter: RETIERE, Fabrice (TRIUMF) Session Classification: W2-4 Neutrino Physics (PPD-DNP-DTP) / Physique des neutrinos (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 414 2016 CAP Congr … / Report of Contributions Personalized Treatment Planning f …

Contribution ID: 1422 Type: Poster (Non-Student) / affiche (non-étudiant)

Personalized Treatment Planning for Targeted Radionuclide Therapy: A Monte Carlo Model Tuesday, 14 June 2016 19:26 (2 minutes)

Patients who receive targeted radionuclide therapy (TRT) for cancer treatment suffer from damaging unwanted healthy body tissues and may receive unexpected dose to healthy organs as an inadvertent consequence of their treatment. In particular, they risk significant dose to critical and secondary organs, e.g. bone marrow, gonads, uterus etc., which may cause long- or short- term damage for entire life. The unintended dose to organs varies widely depending on the typesand energy of the emitted radiation and their decay scheme. Royal University Hospital at University of Saskatchewan recently started Yitrium-90 (Yt-90) treatment available for the liver patients in a drug name TheraSphere. Several other radionuclide treatments, e.g. Radium-223, Strontium-89 will be available in coming months. Till now, MIRD principle is the only methodology that is being widely used for TRT dosimetry and there is no commercial program available that can be fitted over wide varieties of radionuclide treatments. Medical Imaging team at Royal hospital is currently building a customized virtual treatment planning system that is capable to combine personalized CT images to advanced particle transport framework. This presentation showcases design features and initial results of this planning system.

The proposed virtual planning system consists of series of 2-D DICOM images of the patientcap- tured by CT scanner. The 2-D data set are transformed to 3-D object (composed of thousands of voxels (volume of the pixels) that is readable to a particle transport framework. This framework is capable for dose modeling to specific organs. Initially, this system will be used in planning Yt-90 for liver-treatment and Strontium-90 for treatment of bone. In the long run, the system will be upgraded for treatment of alpha emitters with substantial improvements in particle transport data framework. This customized user friendly tool can be used by the clinicians in parallel toexisting commercial planning system in order to cross-validate diagnosis and treatment plan for individual patient. The initial design is completed and been tested for several radionuclides. The presentation will include the results and future challenges.

Primary author: Dr AHMED, Asm S (University of Saskatchewan) Co-authors: Dr FONGE, Humphrey (University of Saskatchewan); Dr DAKA, Josef (Health Canada); Dr RAKHEJA, Rajan (Royal University Hospital)

Presenter: Dr DAKA, Josef (Health Canada) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 415 2016 CAP Congr … / Report of Contributions Novel Phases of High-Tc Cuprates …

Contribution ID: 1423 Type: Oral (Non-Student) / orale (non-étudiant)

Novel Phases of High-Tc Cuprates in Superoxygenated and Heterostructured Thin Films* Tuesday, 14 June 2016 17:15 (15 minutes)

Thin films of transition-metal oxides, by virtue of their high surface-to-volume ratio, tendtohave very different thermodynamic phase stability than in bulk form. When these films aregrown epitaxially on perovskite substrates, the heteroepitaxial mismatch can also induce strong interfacial strains resulting in intergrowths of novel lattice defects [1]. We apply these two concepts of nanoscale materials synthesis to the Y-Ba-Cu-O family of cuprates, in an effort to stabilize novel cuprate phases with very high superconducting critical temperature (Tc). Pulsed laser-ablated deposition is used to grow thin layers of YBa2Cu3O7 (YBCO) epitaxially on and between various cubic perovskites, ranging from insulating titanates to half-metallic maganites. The thin films and heterostructures are also subjected to superoxygenation by annealing under 500 atm of O2 pressure. Atomic-scale transmission electron microscopy and electron energy loss spectroscopy revealed unambiguous evidence for three novel phases of Y-Ba-Cu-O in the nominally YBCO layers. These phases are characterized by either triple-CuO chains, BaO layers within double-CuO chains or extra Y-O layers within the CuO2-Y-CuO2 bilayer; their formation can be attributed to the superoxygenation and heteroepitaxial strain. We discuss the likelihood that these novel cuprate phases have enhanced Tc, in light of a recent pump-probe spectroscopy study [2] of YBCO showing pairing enhancement by dynamic increase of the CuO2 bilayer thickness. [1] H. Zhang, N. Gauquelin, G. A. Botton, J. Y.T. Wei, Appl. Phys. Lett. 103, 052606 (2013). [2] W. Hu, S. Kaiser, D. Nicoletti, C. R. Hunt, I. Gierz, M. C. Ho mann, M. Le Tacon, T. Loew,B. Keimer and A. Cavalleri, Nature Materials 13, 705 (2014).

*Work supported by NSERC, CFI-OIT, and the Canadian Institute for Advanced Research.

Primary author: WEI, John (University of Toronto) Co-authors: Prof. BOTTON, Gianlugi (CCEM and McMaster University); Mr ZHANG, Hao (Uni- versity of Toronto); Dr GAUQUELIN, Nicolas (University of Antwerp) Presenter: WEI, John (University of Toronto) Session Classification: T3-8 Thin Films I (DSS-DCMMP) / Couches minces I (DSS-DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 416 2016 CAP Congr … / Report of Contributions The Effect of Electrolyte Additives …

Contribution ID: 1424 Type: Poster (Non-Student) / affiche (non-étudiant)

The Effect of Electrolyte Additives on Crystallite Orientation in Galvanic Cu Deposits on ⟨111⟩, ⟨100⟩ and ⟨110⟩ Cu Surfaces Tuesday, 14 June 2016 19:08 (2 minutes)

Copper films for applications in printed circuit boards usually have to be fine-grained toachieve even filling of microvias. When galvanically plating Cu films on roll-annealed Cu substrates, un- acceptably large epitaxial crystals were found for certain conditions. Here galvanic Cu films were plated on oriented single-crystal Cu substrates from an additive-free electrolyte and from a commercial electrolyte designed for DC plating. The crystallite distribution in the films was mapped with XRD. For the additive-free bath, the transition to a polycrystalline film occurs more readily on ⟨111⟩ and ⟨100⟩ oriented surfaces, whereas films on ⟨110⟩ substrates are persistently epitaxial. A sequence of recursive twinning steps is the main mechanism for the transition to polycrystalline texture. The bath additives promote fine-grained films and they deliver, for the same platingcon- ditions, remarkably improved results.

Primary author: Ms BROWN, Delilah (Mount Allison University) Co-authors: Dr BRÜNING, Frank (Atotech Deutschland GmbH); BRUENING, Ralf (Mount Alli- son University); Ms SHARMA, Tanu (Mount Allison University); Dr BERNHARD, Tobias (Atotech Deutschland GmbH)

Presenter: BRUENING, Ralf (Mount Allison University) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Surface Science / Science des surfaces (DSS)

September 29, 2021 Page 417 2016 CAP Congr … / Report of Contributions On the coalescence of two drops u …

Contribution ID: 1425 Type: Invited Speaker / Conférencier invité

On the coalescence of two drops undergoing a head-on collision in a Bingham fluid Monday, 13 June 2016 10:30 (30 minutes)

In this work, we consider the canonical problem of the drainage of a thin film of Bingham fluid squeezed out between two spherical, Newtonian drops pushed against each other under the action of an external force. The only prior research to have studied this problem is the analytical work due to Jeelani and coworkers (Can. J. Chem. Eng., vol. 65, pp. 384-390, 1987, and J. Phys. Chem., vol. 90, pp. 6054-6059, 1986.). Unfortunately, these results have been obtained from a simplistic lubrication analysis for nearly planar films, or for dimpled films with ad-hoc assumptions about the film shape. In this work, we have performed detailed numerical simulations of the evolutionof the shape of a thin, Bingham film with an immobile interface based on the lubrication equations, and compare our trends with existing work on the drainage of Newtonian films.

The drainage of a film of Bingham fluid between two colliding Newtonian drops differs fromthat of a Newtonian film in two principal ways. First, drainage rates are slower for Bingham films as compared to Newtonian films of the same viscosity. The difference becomes strong forlow capillary numbers in the spherical configuration of the film, and for large capillary numbers inthe dimpled configuration. Second, once the Bingham film becomes dimpled, it can freeze completely once it reaches a critical thickness. Counterintuitively, this critical thickness is independent of the force pushing the drops against each other! Our results suggest that on a map of drop radius vs. shear rate, the parameter regime for coalescence for Bingham films will be shrunk relative to Newtonian films, and will be completely hindered below a critical shear rate and above acritical drop size.

Primary authors: Dr RAMACHANDRAN, Arun (University of Toronto); Mr GOEL, Sachin (Uni- vesity of Toronto); Mr BORKAR, Suraj (University of Toronto) Presenter: Dr RAMACHANDRAN, Arun (University of Toronto) Session Classification: M1-5 Soft Matter and Polymers (DCMMP-DPMB) / Matière molle et polymères (DPMCM-DPMB)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 418 2016 CAP Congr … / Report of Contributions Band Engineering of Graphene usi …

Contribution ID: 1426 Type: 2016 DCMMP PhD Thesis Award Competition

Band Engineering of Graphene using Metal Mediated Oxidation Wednesday, 15 June 2016 14:15 (30 minutes)

In the study of materials for electronic devices, there is a continuous search for new materials with useful properties such as grapheme and grapheme-based materials. Research on these materials is widespread for many applications such as manipulation the band structure of grapheme to induce a semiconducting band gap. The focus of this study is a cobalt nanoparticle-graphene system investigated for the manipulation of the graphene electronic structure. The properties of this system were investigated using various X-ray spectroscopy and surface science techniques. At a low concentration of cobalt, the metal is completely oxidized into primarily CoO, and the graphene is not heavily damaged. Oxide groups form on the graphene surface but are found to be proportional to the cobalt concentration at thicknesses below 1 nm. Using X-ray spectroscopy, an electronic band gap of up to 0.30 eV is observed in graphene 2p states when cobalt nucleates into nanoopar- ticle islands on the graphene surface. The mechanism of band gap opening is interpreted using electronic structure calculations, showing a contribution from both the oxidation of the graphene itself and the presence of CoO that acts to localize electron charge. These results have implications for graphene electronics and spintronics where magnetic metals can be used to induce a band gap in graphene that is stable at room temperature and under atmospheric exposure. [1] Paul F. Bazylewski, Van Luan Nguyen, Robert P.C. Bauer, Adrian H. Hunt, Eamon J. G. Mc- Dermott, Brett D. Leedahl, Andrey I. Kukharenko, Seif O. Cholakh, Ernst Z. Kurmaev, Peter Blaha, Alexander Moewes, Young Hee Lee, and Gap Soo Chang. Sci Rep. 2015, 5, 15380.

[2] P. Bazylewski, D. W. Boukhvalov, A. I. Kukharenko, E. Z. Kurmaev, A. Hunt, A. Moewes, Y. H. Lee, S. O. Cholakh and G. S. Chang. RSC Adv., 2015, 5, 75600-75606.

Primary author: Dr BAZYLEWSKI, Paul (University of Saskatchewan) Presenter: Dr BAZYLEWSKI, Paul (University of Saskatchewan) Session Classification: W2-6 DCMMP PhD Thesis Award Competition / Compétition du Prix de thèse doctorale DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 419 2016 CAP Congr … / Report of Contributions ** WITHDRAWN** Adaptive endo …

Contribution ID: 1427 Type: Poster (Non-Student) / affiche (non-étudiant)

** WITHDRAWN** Adaptive endoscopic imaging of brain Tuesday, 14 June 2016 19:18 (2 minutes)

With the continued miniaturization of endoscopic imaging tools, the use of mechanical adaptation (focusing, etc.) becomes difficult. This is particularly true for the “mobile” or portable implants, including the freely behaving animals. In the current presentation we shall describe the concept of a motion less adaptive imaging on the example of a stationary (still large) system using liquid crystal micro lenses. Fixed gradient index and electrically tunable liquid crystal lenses (TLCL) were used to build the imaging optical probe. A focal shift of approximately 74 ± 3um was achieved by electrically controlling the lens TLCL. The potential of the system was tested by imaging neurons and spines in thick adult mouse brain sections and in vivo, in the adult mouse brain at different focal planes. Our results indicate that we can further modify our imaging system and obtain its miniaturized version for mobile applications

Primary authors: Prof. SAGHATELYAN, Armen (CRIUSMQ); Mr BAGRAMYAN, Arutyun (Uni- versity Laval); Prof. GALSTIAN, Tigran (University Laval) Presenter: Prof. GALSTIAN, Tigran (University Laval) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 420 2016 CAP Congr … / Report of Contributions Molecular insight to biocompatibil …

Contribution ID: 1428 Type: Invited Speaker / Conférencier invité

Molecular insight to biocompatibility of carbon-based nanomaterials Thursday, 16 June 2016 14:15 (30 minutes)

Biomaterials are widely used for manufacturing implants. One of the most common reasons for implant failure is its immune rejection. Changes in the conformation of blood proteins (e.g., fibrinogen) due to their binding to nonbiological surfaces are the initial step in a chain of immunolog- ical reactions to foreign bodies. Despite the large number of experimental studies that have been performed on fibrinogen adsorption to nonbiological surfaces, a clear picture describing this complex process has eluded researchers to date. Here we focus on modeling the interaction between carbon-based nanomaterials and fibrinogen at the microscopic level by taking into account the physico-chemical properties of the surfaces with the use of empirical force field potential within molecular dynamic (MD) simulations. Carbon-based materials are chosen as a model system for this study due to an increasing interest in their bio-medical applications and the possibility of functionalization (e.g., graphene oxide). The accuracy of the force field was verified by comparing the adsorption energies of individual amino acids on graphene surface with ab initio calculations. All-atom MD simulations of the adsorption of a fibrinogen fragment onto a graphene surface reveal significant conformational changes on immune-reactive sites. In contrast, the interaction with polyethylene glycol (PEG) does not induce structural rearrangements in fibrinogen, which is consistent with the bio-inert nature of PEG

Primary author: RUBEL, Oleg (Department of Materials Science and Engineering, McMaster Uni- versity)

Co-authors: Mr STAUFFER, Dennis (Thunder Bay Regional Research Institute); Dr DRAGNEVA, Nadiya (Biotechnology Ph.D. Program, Faculty of Science and Environment Studies, Lakehead Univer- sity); Prof. FLORIANO, Wely (Department of Chemistry, Lakehead University) Presenter: RUBEL, Oleg (Department of Materials Science and Engineering, McMaster Univer- sity) Session Classification: R2-1 Computational Condensed Matter (DCMMP) / Matière conden- sée numérique (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 421 2016 CAP Congr … / Report of Contributions Magnet and Radiofrequency Tech …

Contribution ID: 1429 Type: Invited Speaker / Conférencier invité

Magnet and Radiofrequency Technology for Low Cost Magnetic Resonance Imaging Tuesday, 14 June 2016 08:30 (30 minutes)

MRI is a highly effective, but expensive imaging modality. Lower strength magnetic fieldand lower cost variants of MRI are being developed for specific applications. We will focus on one approach, ‘Transmit Array Spatial Encoding’ (TRASE), which uses only a resonant radiofrequency (RF) field to produce Fourier spatial encoding equivalent to conventional MRI. The usualaudio frequency switched magnetic field gradient coils are not needed. We will review different magnet experimental configurations and the MHz RF technology needed to implement these low-cost MRI experiments. High-resolution two-dimensional-encoded in vivo MR images of hand and wrist have been obtained using a uniform 0.2T main magnetic field (B0). An alternative approach is to usean inhomogeneous but very low cost main magnet, in combination with the RF-based image encoding. The mechanism used by TRASE exploits RF field phase gradients to encode image information into echo train NMR pulse sequences. The RF transmit field must be designed to produce these phase gradients, but also must be changed between RF pulses. This can be achieved by multichannel transmitters, or by RF switching, or a combination of approaches. In addition to the lowcost advantage, novel experiments exploiting unique capabilities, such as imaging without disturbance of the main B0 magnetic field are possible.

Primary author: Prof. SHARP, Jonathan (University of Alberta) Presenter: Prof. SHARP, Jonathan (University of Alberta) Session Classification: T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 422 2016 CAP Congr … / Report of Contributions Laser Induced Neuro-Stimulation …

Contribution ID: 1430 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Laser Induced Neuro-Stimulation Analysis Thursday, 16 June 2016 14:30 (15 minutes)

This paper exploits the effectiveness of neuro-stimulation when induced with a near infrared laser (808 nm). We examine the absorption spectrum of fats, skin, neuromuscular tissues and bones when irradiated trans-cranially through animal models. Thereby, modelling irradiation time versus penetration depth for an optimal dose. The efficacy of high power laser on the viability andthe ATP production of neuroblastoma cells (SH-SY-5Y) and cortical neurons are evaluated. The study highlights the correlation between Post-Traumatic Stress Disorder and Adenosine-tri-phosphate production. The MTT and luciferase-luciferin analysis explain the hypothesis of a healthy relationship between the stress disorder and the energy producing molecule. Hence, provide guidelines for prototyping the low cost and effective medical devices.It was found that the 1 second irradiation of neurons (invitro), led to an increase of ATP production by a factor of 3.5.

Primary author: AULAKH, Kavleen (Carleton University) Co-authors: ZAKAIB, Scott (Carleton University); Dr WILLMORE, William G. (Carleton Univer- sity); Dr YE, Winnie N. (Carleton University) Presenter: AULAKH, Kavleen (Carleton University) Session Classification: R2-4 Biophotonics (DPMB-DAMOPC) / Biophotonique (DPMB-DPAMPC)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 423 2016 CAP Congr … / Report of Contributions Nuclear Astrophysics with Radioa …

Contribution ID: 1431 Type: Plenary Speaker / Conférencier plénier

Nuclear Astrophysics with Radioactive Beams Monday, 13 June 2016 09:30 (50 minutes)

Stellar explosions and colliding neutron stars are important sources of the chemical elements in nature. The properties of very unstable isotopes that are created for fleeting moments inthese extreme astrophysical sites, imprint themselves onto the nature of the explosion and the characteristic element patterns that are created and ultimately shape the composition of the visible universe. Accelerator facilities that produce beams of these short lived radioactive isotopes can now be used to study the relevant nuclear reaction rates and nuclear properties so one can understand in the laboratory how stars create elements. This also opens the door to using observed element patterns as a diagnostic tool to peek into the deep interiors of some of the most extreme stellar sites. I will review some of the current open questions related to astrophysical processes with unstable nuclei, and how experiments at current and planned rare isotope facilities in the US, Canada, and elsewhere, in concert with observations and astrophysical models, are addressing these questions.

Primary author: SCHATZ, Hendrik (National Superconducting Cyclotron Laboratory) Presenter: SCHATZ, Hendrik (National Superconducting Cyclotron Laboratory) Session Classification: M-PLEN Plenary Session - Start of Conference - Hendrik Schatz, Michigan State Univ./NSCL / Session plénière - Ouverture du Congrès - Hendrik Schatz, Michi- gan State Univ. / NSCL

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 424 2016 CAP Congr … / Report of Contributions The Cosmic Gift of Neutron Stars

Contribution ID: 1432 Type: Plenary Speaker / Conférencier plénier

The Cosmic Gift of Neutron Stars Monday, 13 June 2016 19:30 (45 minutes)

Although they are thousands of light years away, neutron stars can act as very precise cosmic beacons – a celestial gift that sheds light on some of the most interesting problems inmodern science. We will explore these strange objects, explain how astronomers are using them to study issues ranging from the origins of the Universe to the very nature of matter, and even listen to the cosmic symphony they create.

Primary author: KASPI, Victoria (Department of Physics, McGill University) Presenter: KASPI, Victoria (Department of Physics, McGill University) Session Classification: Herzberg Memorial Public Lecture - Victoria Kaspi, McGill Univ. / Conférence commémorative publique Herzberg - Victoria Kaspi, Univ. McGill

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 425 2016 CAP Congr … / Report of Contributions NSERC 2020 Strategic Plan

Contribution ID: 1433 Type: Plenary Speaker / Conférencier plénier

NSERC 2020 Strategic Plan Tuesday, 14 June 2016 11:00 (30 minutes)

I set a number of tasks for myself and for NSERC. Developing and launching NSERC 2020, our strategic plan for the next five years, stood at the top of the list. During a year-long consultation, NSERC benefitted greatly from the input and perspectives of our community through a variety of consultations. I will outline NSERC 2020 in my talk.

Primary author: Dr PINTO, Mario (NSERC) Presenter: Dr PINTO, Mario (NSERC) Session Classification: NSERC Presentation by Mario Pinto / Présentation du CRSNG par Mario Pinto

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 426 2016 CAP Congr … / Report of Contributions Uses and abuses of μMRI and simu …

Contribution ID: 1434 Type: Plenary Speaker / Conférencier plénier

Uses and abuses of μMRI and simultaneous μPET/μMRI: A Chemists talks with Physicists about Biology Tuesday, 14 June 2016 15:00 (45 minutes)

Like any technology, μMRI and μPET have appropriate and inappropriate uses. I will discuss why one might bother with either; then cover a range of applications: how 3D atlas of mouse and quail can be created from high resolution MR images; delve into how lesions and brain structure changes in mouse models of multiple sclerosis are amenable to study with MRI; describe how statistical parametric mapping (SPM) of multiple MRI brain scans of transgenic mouse models provide information about neuronal circuitry alterations. Monitoring changes in tumor physiology is an important aspect of both clinical and pre-clinical imaging – ADC, DCE and cell tracking work will be discussed. Recording of μPET and μMR images simultaneously is a recent development with a host of uses and abuses – work in mouse models of atherosclerosis and oncology require the sensitivity of μPET and resolution with anatomical context of μMRI.

Primary author: Prof. JACOBS, Russell (Beckman Institute / Caltech Brain Imaging Center) Presenter: Prof. JACOBS, Russell (Beckman Institute / Caltech Brain Imaging Center) Session Classification: T-PLEN Bruker BioSpin Plenary Session - Russell Jacobs, Beckman Inst./Caltech / Session plénière

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 427 2016 CAP Congr … / Report of Contributions Probed quantum systems from the …

Contribution ID: 1435 Type: Plenary Speaker / Conférencier plénier

Probed quantum systems from the inside – on the attosecond time scale Thursday, 16 June 2016 17:00 (45 minutes)

Attosecond pulses are generated by electrons that are extracted from a quantum system bytun- neling in an intense light pulse and travel through the continuum. Portions of each electron wave packet are forced to re-collide with its parent ion by the oscillating force of the time dependent electric field. Upon re-collision, the electron and ion can re-combine, emitting soft X-ray radiation. This highly nonlinear process occurs in atoms, molecules and solids and offers unique measurement opportunities –of the attosecond pulses themselves; of molecular orbitals; and even the band structure of large bandgap semiconductors.

Primary author: Prof. CORKUM, Paul (University of Ottawa) Presenter: Prof. CORKUM, Paul (University of Ottawa) Session Classification: R-PLEN Plenary Session - Paul Corkum, Univ. of Ottawa - Session plénière - Paul Corkum, Univ. d’Ottawa

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 428 2016 CAP Congr … / Report of Contributions A Prototypical Substorm with Con …

Contribution ID: 1436 Type: Oral (Non-Student) / orale (non-étudiant)

A Prototypical Substorm with Conjugate Ground and Space Data Monday, 13 June 2016 17:00 (15 minutes)

The substorm at about 5 UT on February 26, 2008 (Angelopoulos et al., Science, 2008) hasbeen taken as prototypical of reconnection in the Near-Earth Neutral Line model. Further examination by Pu et al. (JGR, 2010) showed that the event was preceded an hour earlier by one with very similar signatures. Traditional use of AE-related indices suggests that the first event was smaller in terms of electric currents than the second. More detailed examination of ground magnetic data shows that it was in fact comparable: in addition, the second event was considerably further to the west. The ensemble of data suggests more similarity than differences for the twosub- events. We investigate the potential of inclusion of SCW currents themselves to improve mapping of THEMIS footpoints to Earth poleward of where quasi-static models map, to better match ground and CHAMP observations. Automated Meridian Modeling shows that a simple electrojet model with only three parameters (electrojet borders and current) matches data well with approximately 0.2 MA cross-meridian current in both subevents. GOES spacecraft approximately conjugate to eastern North America show dipolarization signatures consistent with this magnitude of current. There was good conjugacy between hemispheres, as indicated by Antarctic magnetometers and inversion based on them. SuperMag data gives dense enough magnetometer coverage that the layout of the substorm current wedge, with auroral zone westward electrojet and subauroral perturbations mainly due to field-aligned current, can be determined. The quantitative data fromthe ground provides a context in which flows, magnetic fields, and other parameters at the THEMIS constellation and other conjugate spacecraft may be interpreted.

Primary author: CONNORS, Martin (Athabasca University) Co-authors: Dr WEATHERWAX, Allan (Merrimack College); Dr LÜHR, Hermann (GFZ Pots- dam); Dr SINGER, Howard (NOAA); Dr GJERLOEV, Jesper (APL/JHU); Dr ENGEBRETSON, Mark (Augsburg College); Dr MCPHERRON, Robert (UCLA); Dr ANGELOPOULOS, Vassilis (UCLA); Dr CHU, Xiangning (UCLA)

Presenter: CONNORS, Martin (Athabasca University) Session Classification: M3-7 Atmospheric and Space Physics I (DASP) / Physique atmo- sphérique et de l’espace I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 429 2016 CAP Congr … / Report of Contributions Domains of application of microco …

Contribution ID: 1437 Type: Oral (Non-Student) / orale (non-étudiant)

Domains of application of microcontrollers and single board linux computers in data acquisition Thursday, 16 June 2016 14:00 (15 minutes)

More than a decade ago, high function microcontrollers like the Microchip PIC allowed a large step to be made in data acquisition, as compared to fabrication of systems from discrete parts. They had a high level of integrated peripherals relevant to the task, good development environments, and relatively easy programming, including high level languages on the most advanced members of the family. Their level of interaction for the user was limited, and networking generally fellshort of the standards needed to ensure reliability. More recently, single board linux computers like the Raspberry Pi and Beagleboard/bone provide a high level of user interaction, good networking, and a standard environment. They are made flexible by a large selection of inexpensive peripheral devices available, generally interconnected by the I2C protocol. Nevertheless, there are limitations on what such a system can do, since it does not usually have a real time operating system, and thus cannot respond to interrupts. Usually the ability to detect events at high speed is also limited. We will relate a hybrid approach using a PIC with a lower-end integrated system known as a Rabbit, which formed the basis of a high performance magnetic instrument known as netPICOmag. We propose extension of this concept to PIC and Raspberry Pi for real-time or time critical applications.

Primary author: CONNORS, Martin (Athabasca University) Co-author: Mr SCHOFIELD, Ian (Athabasca University) Presenter: CONNORS, Martin (Athabasca University) Session Classification: R2-6 General Instrumentation II (DIMP) / Physique générale des instruments II (DPIM)

Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

September 29, 2021 Page 430 2016 CAP Congr … / Report of Contributions Advancing Methane Mitigation by …

Contribution ID: 1438 Type: Oral (Non-Student) / orale (non-étudiant)

Advancing Methane Mitigation by Understanding the Physics and Chemical Kinetics of Ultra-lean Combustion Dynamics Monday, 13 June 2016 16:15 (15 minutes)

The recent climate change discussions between Canada and the United States of America and other international agreements target methane a potent GHG. The U.S. Environmental Protection Agency will begin developing regulations for methane emissions from existing oil and gas sources while Environment and Climate Change Canada will publish proposed initial phase regulations by early 2017. Although goals are set for anthropogenic methane emissions they should not be the only target for mitigation, thus technology to mitigate naturally occurring methane is required. At present the wetlands emissions, 150–180 TgCH4 per year, are thought to dominate, but the levels of permafrost emissions are potentially much greater. It has been estimated that the methane stored in the permafrost and clathrates may be greater than all other fossil fuels combined and may be poised to be atmospherically released as the Arctic temperature increases. Methane is typically quoted as having about 25 times the forcing factor of carbon dioxide, but that is over a century, it can be more than 84 times that of carbon dioxide over 20 years. The impact is immediate, which may accelerate a positive Arctic feedback loop causing much greater temperatures and rapid release of the stored methane. As reported in Nature, the cost of this methane release could be $60 trillion and the outcome could be disastrous for the climate and world economy.

The impetus of this work is on modelling and simulation of ultra-lean methane oxidation/combustion. The challenges associated with ultra-lean methane oxidation are the conditions for ignition ofthe ultra-lean mixture and sustainability of the combustion process. The interest in MILD combustion has been mainly driven by the need for low emission combustion technology, but methane capture and energy utilisation requires a deeper understanding of ultra-lean combustion. The fundamental studies of the chemical kinetics, physical process and reliable kinetic schemes of ultra-lean methane combustion are sparse, but are required to do proper computational fluid dynamics studies in support of designing and developing advanced mitigation systems. Ultra-lean methane combustion cannot be achieved using traditional combustion technologies because the thermal energy available in the system may not be sufficient to ignite the fuel or even sustain the chemical reactions; thus, the concept of moderate or intense low-oxygen dilution (MILD) combustion is of great relevance. A discussion of the modelling approach in the context of low concentration methane oxidation/combustion is provided. A brief review of anthropogenic emissions of methane and some combustion mitigation and utilisation technologies will be discussed with the view toward developments focused on innovative technologies to achieve sustainable oxidation/combustion and energy capture is discussed.

Primary author: Dr CLUFF, Daniel (University of Exeter) Co-authors: Dr MIRA, Daniel (Barcelona Supercomputing Center); Dr JIANG, Xi (Lancaster Uni- versity)

Presenter: Dr CLUFF, Daniel (University of Exeter) Session Classification: M3-7 Atmospheric and Space Physics I (DASP) / Physique atmo- sphérique et de l’espace I (DPAE)

September 29, 2021 Page 431 2016 CAP Congr … / Report of Contributions Advancing Methane Mitigation by …

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 432 2016 CAP Congr … / Report of Contributions La vulgarisation au sujet des auror …

Contribution ID: 1439 Type: Poster (Non-Student) / affiche (non-étudiant)

La vulgarisation au sujet des aurores boréales dans le projet AUTUMNX Tuesday, 14 June 2016 19:02 (2 minutes)

Le projet AUTUMNX, soutenu par l’Agence Spatiale Canadienne (ASC), a installé une dixaine de magnétomètres haut de gamme au Québec. On y étudie le champs magnétique dû aux aurores boréales avec le but de mieux comprendre la magnétosphère et aussi de déterminer les effets de ses changements (loi de Faraday) sur le réseau électrique. Comme on travaille dans des communautés partout au Québec, mais surtout petites et éloignées des grands centres, on fait de la vulgarisation quand possible. À cette fin, on a développé une affiche/poster en français, qu’on présente ici. Cette affiche, basée sur celle du projet américain THEMIS, est disponible sous forme PDFàceux qui aimeraient se joindre à notre projet de vulgarisation.

Primary author: CONNORS, Martin (Athabasca University) Co-author: Mr SCHOFIELD, Ian (Athabasca University) Presenter: CONNORS, Martin (Athabasca University) Session Classification: DPE Poster Session with beer / Session d’affiches avec bière DPE

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 433 2016 CAP Congr … / Report of Contributions Twenty Years of Innovative Physi …

Contribution ID: 1440 Type: Oral (Non-Student) / orale (non-étudiant)

Twenty Years of Innovative Physics Distance Education at Athabasca University Wednesday, 15 June 2016 16:00 (15 minutes)

Although Athabasca University has offered distance education courses in many subjects forover a quarter century, twenty years ago Physics was taught by mailing out printed course materials while requiring students to physically attend onsite labs, some coming from as far away as Texas. A major increase in Physics enrollment took place after we switched to mail-out course material, with home labs using lab kits borrowed from the university library. We have progressed to a mail- out textbook with online Study Guide and Home Lab Manual, and reduced the cost of lab kits as we use modern technologies to serve nearly 500 students per year. Our latest endeavor is to move to an open source e-textbook (OpenStax College Physics) with improved online lab materials. The ubiquitous use of cellphones and the measurement capabilities they now provide allowusto envisage using only materials available in students’ homes to provide a meaningful lab experience. Many of our advances have implications for campus-based institutions.

Primary author: CONNORS, Martin (Athabasca University) Co-authors: Dr MARTIN, Brian (King’s University); Dr AL-SHAMALI, Farook (Athabasca Univer- sity)

Presenter: CONNORS, Martin (Athabasca University) Session Classification: W3-2 Teaching Physics to a Wider Audience (DPE) / Enseigner la physique à un auditoire plus vaste (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 434 2016 CAP Congr … / Report of Contributions Monte Carlo studies of the pseudo …

Contribution ID: 1441 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Monte Carlo studies of the pseudogap regime in the cuprate superconductors Tuesday, 14 June 2016 19:08 (2 minutes)

We present a theory that describes the pseudogap regime of the hole-doped cuprate superconductors by incorporating the competing effects of superconducting and charge density wave orders into six-dimensional degrees of freedom on a two-dimensional lattice [Science 343, 1336 (2014)]. Using Monte Carlo simulations, we calculate the charge order correlations and diamagnetic susceptibility [PRB 90, 094515 (2014)] associated with this O(6) model. We demonstrate that the structure factors calculated using our theory agree qualitatively with recent X-ray scattering experiments on hole-doped YBa2Cu3O6+x for a wide range of temperatures about the superconducting transition. We also study the effects of incorporating into our model interlayer coupling and disorder [PRB92, 174505 (2015)]. In the presence of disorder, we find that our theory can reproduce experimental structure factors in the zero temperature limit.

Primary author: HAYWARD SIERENS, Lauren (University of Waterloo) Co-authors: Dr ACHKAR, Andrew (University of Waterloo); Prof. HAWTHORN, David (University of Waterloo); Ms NIE, Laimei (Stanford University); Prof. MELKO, Roger (University of Waterloo); Prof. KIVELSON, Steven (Stanford University); Prof. SACHDEV, Subir (Harvard University) Presenter: HAYWARD SIERENS, Lauren (University of Waterloo) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 435 2016 CAP Congr … / Report of Contributions On the validation of Swarm TII an …

Contribution ID: 1442 Type: Oral (Non-Student) / orale (non-étudiant)

On the validation of Swarm TII and LP data Tuesday, 14 June 2016 16:30 (15 minutes)

The Thermal Ion Imagers (TII) on the Swarm satellites measure ion distribution functions which carry information about ion temperature in the topside ionosphere. Ion temperature, which is obtained from the second moments of the imaged ion distribution, requires validation. One way to evaluate the accuracy of the TII ion temperature, as well as electron temperatures and densities measured by the Langmuir probes (LP), is to study their consistency with a physics-based model of energy exchange between electrons, ions, and neutrals. We first assess the validity and accuracy of the method of topside ion temperature estimation from the energy balance equation using a physics-based ionosphere model at low and middle latitudes. Next, since the method depends on the LP data, the measurements of electron density and temperature are compared with corresponding measurements from incoherent scatter radars. In addition, the electron density data are compared with those obtained from COSMIC GPS radio occultation globally. Possible adjustments to the data are proposed.

Primary author: LOMIDZE, Levan (University of Calgary) Co-authors: KOUZNETSOV, Alexei (University of Calgary); Dr KNUDSEN, David (University of Calgary); BURCHILL, Johnathan (University of Calgary) Presenter: LOMIDZE, Levan (University of Calgary) Session Classification: T3-9 Atmospheric and Space Physics (DASP) / Physique atmosphérique et de l’espace II (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 436 2016 CAP Congr … / Report of Contributions Progress on TITAN’s Cooler PEnn …

Contribution ID: 1443 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Progress on TITAN’s Cooler PEnning Trap Tuesday, 14 June 2016 19:06 (2 minutes)

The masses of radioisotopes is a fundamental property which is critical to a number offields study, and Penning traps have proven to be an important tool in measuring these masses to high precision. The TITAN facility at TRIUMF has achieved many successes in this field includinga successful measurement of the mass of 11Li, the shortest-lived nuclide to ever be measured in such a trap. There is always a trade-off between half-life and precision, and masses off short-lived isotopes are necessary inputs for fields ranging from tests of the unitarity of the CKM matrix,to studies of r-process nucleosynthesis.

The precision of these measurements can be maximized by charge-breeding the isotopes tohighly ionized states by utilizing the high-energy electron beam of an Electron Beam Ion Trap (EBIT). The EBIT has been found to increase the energy spread of the ion bunch sent to themeasurement Penning trap for mass measurement. However, the improvement due to charge-breeding will be greatest if we limit this energy spread to ∼1eV/q. For this reason, TITAN is developing a Cooler PEnning Trap (CPET), which will trap the charge-bred ions with a large acceptance, and cool them to appropriate energies prior to mass measurement. Since highly charged ions would charge exchange with a buffer gas, cooling will be accomplished by trapping the ions in the sameregion as a simultaneously trapped plasma of electrons. Recent steps toward implementing this trap in the radioactive beam-line will be discussed.

Primary author: KOOTTE, Brian Co-authors: Dr GALLANT, Aaron (University of British Columbia/TRIUMF); Dr BARQUEST, Bradley (TRIUMF); Dr BABCOCK, Carla (TRIUMF); Dr LASCAR, Daniel (TRIUMF); Mr SHORT, Devin (Simon Fraser University/TRIUMF); Mr LEISTENSCHNEIDER, Erich (University of British Columbia/TRIUMF); Mr FINLAY (University of British Columbia); Dr GWINNER, Gerald (University of Manitoba); DILLING, Jens (triumf/UBC); Mr FOSTER, Matthew (University of Surrey); Dr REITER, Pascal (TRIUMF); Mr KLAWITTER, Renee (University of Heidelberg/TRIUMF); Dr BRUNNER, Thomas (McGill University); Mr CHOWDHURY, Usman (University of Manitoba/TRIUMF); Mr LAN, Yang (University of British Columbia/TRIUMF)

Presenter: KOOTTE, Brian Session Classification: DNP Poster Session with beer / Session d’affiches, avec bière DPN

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 437 2016 CAP Congr … / Report of Contributions Alpha-gamma Angular Correlatio …

Contribution ID: 1444 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Alpha-gamma Angular Correlation in 209Po Using TIGRESS Integrated Plunger Tuesday, 14 June 2016 19:08 (2 minutes)

Alpha decay provides a powerful tool to study structure of heavy nuclei with Z>83 (above Pb and Bi). When a gamma ray is emitted following the alpha decay, the alpha-gamma angular correlation can be used to assess the height of Coulomb and centrifugal barriers, which determine the rate of the alpha-particle tunnelling. This correlation, through the selection rules for the decays, can also be used as a tool for spin and parity assignments for the nuclear states involved in the decay. In addition, studies of alpha-gamma correlation provide a test for parity conservation in the decay processes governed by the strong and electromagnetic forces. For that reason, an apparatus to study alpha-gamma correlation has been set up at TRIUMF, Canada’s National Laboratory for Particle and Nuclear Physics, through coupling of the CsI wall of the Tigress Integrated Plunger (TIP) device and TRIUMF-ISAC Gamma-Ray Escape Suppressed Spectrometer (TIGRESS). Alpha-gamma sources can be positioned at the centre of the TIP chamber, which is installed within the centre of TIGRESS. The identification of the alpha-decay is achieved through the pulse-shape sensitivity of the CsI scintillators. In this study, the sensitivity of the setup is investigated from a comparison of measured and predicted, as well as previously reported, alpha-gamma angular distribution from 209Po decay. So far, time correlation of alpha and gamma decay has been imposed, and alpha identification has been applied from CsI pulse shape sensitivity. Around 8000 events with extremely high signal-to-noise ratio have been identified for further analysis under the imposed condition. Optimal angular grouping between different TIP and TIGRESS detector pairs is currently investigated. Analysis and results will be presented and discussed.

Primary authors: CHESTER, Aaron (Simon Fraser University); WU, Frank(Tongan) (Simon Fraser University); HACKMAN, Greg (TRIUMF); HENDERSON, Jack (TRIUMF); WILLIAMS, Jonathan (Si- mon Fraser University); Prof. STAROSTA, Kris (Simon Fraser University); ROUTSALAINEN, Panu (TRIUMF); HENDERSON, Robert (TRIUMF); DOMINGO, Thomas (Simon Fraser University) Presenter: WU, Frank(Tongan) (Simon Fraser University) Session Classification: DNP Poster Session with beer / Session d’affiches, avec bière DPN

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 438 2016 CAP Congr … / Report of Contributions Searches for new physics with the …

Contribution ID: 1445 Type: Invited Speaker / Conférencier invité

Searches for new physics with the ATLAS detector Thursday, 16 June 2016 13:15 (30 minutes)

In 2015, the Large Hadron Collider set a new record, colliding protons at a centre-of-mass energy of 13 tera electron volts. This increase in energy means an increase in sensitivity in searches for new physics for detectors at the LHC. ATLAS has completed a large number of searches for phenomena motivated by theories of physics beyond the Standard Model using the data collected at this energy. One possible hint of new physics has been observed by both ATLAS and CMS in the diphoton spectrum. I will be discussing this excess and its implications for new physics. I will also be presenting results from searches for microscopic black holes, the existence of which could point to new physics. This talk will present new limits from this and other searches withthe ATLAS detector, and the subsequent outlook for physics beyond the Standard Model.

Primary author: DASSOULAS, James (University of Alberta (CA)) Presenter: DASSOULAS, James (University of Alberta (CA)) Session Classification: R2-2 Energy Frontier: Further Developments (PPD) / Frontière d’énergie: développements futurs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 439 2016 CAP Congr … / Report of Contributions Operation and Performance of the …

Contribution ID: 1446 Type: Invited Speaker / Conférencier invité

Operation and Performance of the ATLAS detector in LHC Run II Monday, 13 June 2016 13:00 (30 minutes)

The ATLAS detector at CERN in Geneva, Switzerland, detects the particles produced in proton- proton collisions created by the Large Hadron Collider. Following the very successful Run I data taking period during 2009-2012 where the proton-proton collision energy was at maximum 8 TeV, we have now started the Run II data taking period with the significantly higher collision energy of 13 TeV. This talk will present the status of the operations and performance of the ATLAS detector, including details on data acquisition, trigger, reconstruction and calibration performance. Particular focus will be given to the Canadian contributions.

Primary author: GILLBERG, Dag (Carleton University) Presenter: GILLBERG, Dag (Carleton University) Session Classification: M2-5 Energy Frontier: SUSY and Exotics (PPD) / Frontière d’énergie: supersymétrie et particules exotiques (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 440 2016 CAP Congr … / Report of Contributions Colossal Permittivity in In + Nb co-…

Contribution ID: 1447 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Colossal Permittivity in In + Nb co-doped TiO2 Tuesday, 14 June 2016 19:46 (2 minutes)

In + Nb co-doped TiO2 has been previously investigated and shown to display colossal permittivity 3 (ϵ1 > 10 ) for frequencies less than or equal to 1 MHz using impedance spectroscopy. In this work the lattice vibrational contribution to the low frequency dielectric function is studied in ceramic samples at the 0\%,5\%, and 10\% doping level using temperature-dependent reflectance spectroscopy. It is found that the soft mode behaviour exhibited by the lowest frequency infrared ibrational mode in pure TiO2 is not strongly affected by the co-doping. There is a large discrepancy between the ϵ1 measured at the lowest far infrared frequencies in this reflectance spectroscopy study (≈ 1.5 THz) and the value measured below 1 MHz.

Primary authors: CRANDLES, David (Brock University); YEE, Susan Presenter: YEE, Susan Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 441 2016 CAP Congr … / Report of Contributions Quantum Model for Machine Lear …

Contribution ID: 1448 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Quantum Model for Machine Learning Applications Tuesday, 14 June 2016 19:24 (2 minutes)

The field of machine learning has been revolutionized by the recent improvements in the trainingof deep networks. Their architecture is based on a set of stacked layers of simpler modules. Oneofthe most successful building blocks, known as a restricted Boltzmann machine, is an energetic model based on the classical Ising Hamiltonian. In our work, we investigate the benefits of quantum effects on the learning capacity of Boltzmann machines by extending its underlying Hamiltonian with a transverse field. For this purpose, we employ exact and stochastic training procedures on data sets with physical origins.

Primary author: KULCHYTSKYY, Bohdan (University of Waterloo) Co-authors: Dr ANDRIYASH, Evgeny (D-Wave Systems); Dr AMIN, Mohammad (D-Wave Sys- tems); Prof. MELKO, Roger (University of Waterloo) Presenter: KULCHYTSKYY, Bohdan (University of Waterloo) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 442 2016 CAP Congr … / Report of Contributions Floquet many-body localization tr …

Contribution ID: 1449 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Floquet many-body localization transition in the thermodynamic limit Tuesday, 14 June 2016 19:58 (2 minutes)

Generic ergodic quantum many-body systems under periodic driving, in the long-time limit, are described by an infinite temperature canonical ensemble. In the presence of disorder, heating can be prevented in a certain regime (e.g. high frequency), and many-body localized (MBL) systems are stable under periodic driving. The precise value of the transition has relied on exact diagonalization and finite size scaling studies of different quantities such as level statistics and entanglement entropy. Here we show that the numerical linked cluster expansion applied to the entanglement entropy of eigenstates is significantly more precise in determining the transition and conforming to the static case we find that the exact diagonalization methods overestimate the MBL regime.

Primary author: Mr PONTE, Pedro (University of Waterloo / Perimeter Institute) Co-author: Prof. MELKO, Roger (University of Waterloo/ Perimeter Institute) Presenter: Mr PONTE, Pedro (University of Waterloo / Perimeter Institute) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 443 2016 CAP Congr … / Report of Contributions A Holographic Model for Quantum …

Contribution ID: 1450 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

A Holographic Model for Quantum Critical Responses Tuesday, 14 June 2016 19:18 (2 minutes)

In this talk we construct a self-consistent holographic model that is used to analyze the dynamical response functions for strongly interacting quantum critical systems described by conformal field theories (CFTs). A relevant scalar operator is incorporated in order to drive a quantum critical phase transition and we study the effect that our model parameters have on the finite temperature conductivity, most notably, the scaling dimension of the relevant operator. We find that the conductivity is well-approximated by a simple ansatz proposed by Katz et al [Physical Review B 90 (24), 245109]. At large frequencies, we expand the conductivity using the operator product expansion to reveal the spectrum of our model CFT. Finally, our model can be used to analyze the conductivity as we tune away from the quantum critical point, allowing for a comprehensive analysis of the phase diagram.

Primary author: SIERENS, Todd (Perimeter Institute) Co-authors: Prof. MYERS, Robert (Perimeter Institute); Dr WITCZAK-KREMPA, William (Harvard University)

Presenter: SIERENS, Todd (Perimeter Institute) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 444 2016 CAP Congr … / Report of Contributions SNO+ status

Contribution ID: 1451 Type: Invited Speaker / Conférencier invité

SNO+ status Monday, 13 June 2016 11:15 (30 minutes)

The SNO+ experiment is located at SNOLAB and is a multi-purpose scintillator neutrino detector. Currently the detector is being filled with water and prepared for commissioning. The first phase of the experiment will be the search for neutrinoless double beta decay with a 130Te loaded scintillator. Other physics goals include: lower energy solar neutrinos, reactor- and geo-antineutrinos as well as neutrinos from a potential nearby supernova. This presentation will give an overview over the experiment and give the current status.

Primary author: Dr KRAUS, Christine (Laurentian University) Presenter: Dr KRAUS, Christine (Laurentian University) Session Classification: M1-4 Neutrinoless Double Beta Decay I (PPD-DNP-DTP) / Double désintégration beta sans neutrino I (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 445 2016 CAP Congr … / Report of Contributions Characterization of backgrounds i …

Contribution ID: 1452 Type: Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Characterization of backgrounds in lucas cells Tuesday, 14 June 2016 09:30 (15 minutes)

For the current generation of experiment on particle astrophysics low backgrounds are very important, which comes with the need for very sensitive measurement tools. A new generation of lucas cells has been produced and this presentation describes the characterization and first steps to simulating the cells performed in the summer 2015. This presentation won first prize atthe SNOLAB undergaduate student talk competition.

Primary author: CUDMORE, Elspeth (Carleton University) Presenter: CUDMORE, Elspeth (Carleton University) Session Classification: T1-5 Neutrinoless Double Beta Decay II (PPD-DNP-DTP) / Double désintégration beta sans neutrino II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 446 2016 CAP Congr … / Report of Contributions IceCube-DeepCore-PINGU

Contribution ID: 1453 Type: Invited Speaker / Conférencier invité

IceCube-DeepCore-PINGU Thursday, 16 June 2016 14:15 (30 minutes)

IceCube and its low energy extension DeepCore, located at South Pole Station Antarctica, has now acquired nearly 5 years of data in the final detector configuration. In that time, IceCube has detected the Universe’s highest energy neutrinos to date, and DeepCore has achieved measurements of atmospheric neutrino oscillations near 25 GeV that are competitive with dedicated experiments at lower energies. Building on this success of deploying massive Cherenkov neutrino detectors in a natural medium, IceCube is now preparing for next generation detector arrays to extend its reach at both the high and low energy range of the current experiment. The Precision IceCube Next Generation Upgrade (PINGU) is the proposed in-fill to the IceCube array that will further lower the neutrino energy detection threshold, making possible enhanced atmospheric neutrino oscillation measurements and sensitivity to indirect dark matter searches. This presentation will briefly cover the most recent results from IceCube and DeepCore, and will discussthe status of the PINGU project.

Primary author: GRANT, Darren (University of Alberta) Presenter: GRANT, Darren (University of Alberta) Session Classification: R2-2 Energy Frontier: Further Developments (PPD) / Frontière d’énergie: développements futurs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 447 2016 CAP Congr … / Report of Contributions 12 years of MCAS: Multi-Channel …

Contribution ID: 1454 Type: Invited Speaker / Conférencier invité

12 years of MCAS: Multi-Channel Algebraic Scattering Thursday, 16 June 2016 08:30 (30 minutes)

The Multi-Channel Algebraic-Scattering (MCAS) method was developed in 2003 for the analysis of low-energy nuclear spectra and of resonant scattering. It continues to be used effectively for nuclear-structure studies. The MCAS approach allows the construction of the nucleon-core- nucleus model Hamiltonian which can be defined in detail (coupling to the collective modes, rotational or vibrational, diverse components of the interaction operators, nonlocal effects due to Pauli exclusion). As reported at previous CAP congresses, MCAS analyses have given good descriptions of bound states and low-lying resonant spectra of medium-light nuclei, including nuclei well off the line of stability. We are currently moving into new directions for MCAS, specifically, moving to heavier target nuclei (mass A = 18-23) and new projectiles in the scattering process, recently, the α particle. As this is an invited paper, likely having a wider audience than previous presentations, a summary of the MCAS method will be presented with emphasis on its distinctive features. A significant feature is the way the Pauli principle is preserved, while a single nucleon interacts with a nucleus that may have filled neutron or proton shells. This we refer to as the OPP method, which will be presented in this review talk. Some of the results that have been achieved with MCAS, and already published elsewhere will be presented, and present and future plans for our collaboration will conclude this talk.

Institutions: University of Manitoba, Dept. of Physics and Astronomy (JPS); School of Physics, Uni- versity of Melbourne, Victoria 3010, Australia (KA, DvdK); Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova I-35131, Italy (LC, WP); Department of Physics, University of Johan- nesburg, P.O. Box 524 Auckland Park, 2006, South Africa (SK); ARC Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia (PRF).

Primary author: SVENNE, Juris (University of Manitoba) Co-authors: Prof. KENNETH, Amos (School of Physics, University of Melbourne Melbourne, Australia); Mr VAN DER KNIJFF, D. (School of Physics, University of Melbourne Melbourne, Aus- tralia); Prof. PISENT, Gualtiero (Dipartimento di Fisica e Astronomia, Universit‘a di Padova Padova, Italy); Dr CANTON, Luciano (Istituto Nazionale di Fisica Nucleare Sezione di Padova, Padova, Italia); Dr FRASER, Paul (Department of Physics, Astronomy and Medical Radiation Studies Curtin University, Perth, Australia); Dr KARATAGLIDIS, Steven (University of Johannesburg Auckland Park, South Africa)

Presenter: SVENNE, Juris (University of Manitoba) Session Classification: R1-3 Advances in Nuclear Physics and Particle Physics Theory (DTP- DNP-PPD) / Progrès en physique nucléaire et en physique des particules théoriques (DPT-DPN- PPD)

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 448 2016 CAP Congr … / Report of Contributions DEAP-3600 Dark Matter Search w …

Contribution ID: 1455 Type: Invited Speaker / Conférencier invité

DEAP-3600 Dark Matter Search with Argon Tuesday, 14 June 2016 13:15 (30 minutes)

The DEAP-3600 experiment will search for dark matter particle interactions on 3.6 tonnes ofliquid argon at SNOLAB. The argon is contained in a large ultralow-background acrylic vessel viewedby 255 8-inch photomultiplier tubes. Very good pulse-shape discrimination has been demonstrated for scintillation in argon, and the detector has been designed to allow control of (alpha,n) and external neutron recoils, and surface contamination from 210Pb and radon daughters, allowing an ultimate sensitivity to spin-independent scattering of 10^{-46} cm^{2} per nucleon at 100 GeV mass. The detector is expected to begin collecting low-background data in 2016; the current status ofthe experiment will be presented.

Primary author: Prof. BOULAY, Mark (Carleton University) Presenter: Prof. BOULAY, Mark (Carleton University) Session Classification: T2-3 Cosmic Frontier: Dark Matter II (PPD) / Frontière cosmique: matière sombre II (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 449 2016 CAP Congr … / Report of Contributions The Earth’s Hum Comes from the…

Contribution ID: 1456 Type: Invited Speaker / Conférencier invité

The Earth’s Hum Comes from the Sun Monday, 13 June 2016 15:45 (30 minutes)

It was established over a decade ago that the normal modes of the Earth are continuously excited at times without large earthquakes, but the sources of the ‘seismic hum’ have remained unresolved. In addition to the normal modes of the Earth, we show spectral lines in seismic data with frequencies which correspond closely to normal modes of the Sun. Moreover, the widths of the low-frequency lines in the seismic spectra are similar to those of solar modes and much narrower than those of the Earth’s normal mode peaks. These seismic lines are highly coherent with magnetic fields measured on both the Geostationary Operations Environmental Satellite (GOES)–10 satellite and the Advanced Composition Explorer (ACE) spacecraft located at L1, 1.5 million km sunward of Earth suggesting that the solar modes are transmitted to the Earth by the interplanetary magnetic field and solar wind. The solar modes are split by multiples of a cycle/day and,surprisingly, by the ‘quasi two-day’ mode and other frequencies. Both the phase of the coherences and slight frequency offsets between seismic and geomagnetic data at observatories exclude the possibility that these effects are simply spurious responses of the seismometers to the geomagnetic field. We emphasize data from low-noise seismic observatories: Black Forest (BFO), Pin ̃onFlat (PFO), Eskdalemuir (ESK) and Obninsk (OBN). Horizontal components of seismic velocity show higher coherences with the external (ACE) magnetic field than do the vertical components. This effect appears to be larger near the seismic torsional, or T-mode, frequencies.

Primary author: Prof. THOMSON, David (Queens University) Co-author: Dr VERNON, Frank (Scripps Institute of Oceanography, UCSD, La Jolla, California)

Presenter: Dr VERNON, Frank (Scripps Institute of Oceanography, UCSD, La Jolla, California)

Session Classification: M3-7 Atmospheric and Space Physics I (DASP) / Physique atmo- sphérique et de l’espace I (DPAE)

Track Classification: Atmospheric and Space Physics / Physique atmosphérique et de l’espace (DASP-DPAE)

September 29, 2021 Page 450 2016 CAP Congr … / Report of Contributions From Particle Physics to Education …

Contribution ID: 1457 Type: Invited Speaker / Conférencier invité

From Particle Physics to Education: The Role of Tinkering Tuesday, 14 June 2016 09:15 (30 minutes)

The love of tinkering is perhaps the single most universal trait among scientists. From designing an experiment to building a computer application to solving a differential equation, the cycle of “observe - explain - test - revise” is at the root of the scientific creative process.

Driven by the love of tinkering, we have developed a small low-cost wireless lab system with the goal of putting powerful scientific instrumentation in the hands of every student, both insideand outside of the classroom. I will describe this project and how it is radically changing our view of introductory physics labs at the University of Illinois.

Primary author: SELEN, Mats (Universiry of Illinois) Presenter: SELEN, Mats (Universiry of Illinois) Session Classification: T1-2 Lab Revitalisation: Innovative and Distance Undergraduate Labs (DPE) / Revitalisation de labos : laboratoires de premier cycle innovateurs et à distance (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 451 2016 CAP Congr … / Report of Contributions Integrated Testlets: Multiple- …

Contribution ID: 1458 Type: Invited Speaker / Conférencier invité

Integrated Testlets: Multiple-Choice Testing 2.0 Thursday, 16 June 2016 09:00 (30 minutes)

Multiple-choice (MC) exams are becoming more prevalent in physics courses as student populations rise and instructional resources dwindle. Particularly in STEM disciplines we would like to find ways to test deeper levels of understanding or knowledge integrations than are typicallyaf- forded by multiple-choice tests. With simple immediate-feedback tools we can construct new types of multiple-choice assessment structures that test both higher-level thinking, and knowledge integration. Such “Integrated Testlets” (ITs) also add the benefits of simple and valid granting of partial credit, as well as turning a final exam into a formative assessment opportunity. In this talk, Iwill touch on the antagonism between constructed-response and multiple-choice testing in physics, I will outline how ITs resolve some of this antagonism, I will summarize recent data on the validity of partial credit in MC testing, and I will briefly review the development and current usage of ITs.

Primary author: SLEPKOV, Aaron (Trent University) Co-author: Dr SHIELL, Ralph (Trent University) Presenter: SLEPKOV, Aaron (Trent University) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 452 2016 CAP Congr … / Report of Contributions Metal Colorization and its applicat …

Contribution ID: 1459 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Metal Colorization and its application: using picosecond pulses Tuesday, 14 June 2016 19:06 (2 minutes)

World mints compete year after year to produce new technologies that will revolutionize the field, increase revenue and make these new technologies unique and attractive to the Market place. New technologies developed in this project is to use nanoparticles and laser induced gratings to create fixed colors and holograms on metallic surfaces. The use of nanoparticles (NPs)asthe colorizing agent dates back to the Roman Empire. When exposed to electro-magnetic radiations, NPs exhibit unique optical properties that depend on their shape, volume fraction, hosting medium and permittivity, a feature that has drawn considerable attention in fields such as sensing, jewel making and solar cells. We present the angle-independent coloring of silver and gold. The coloring of pure gold (from violet to red) is a world first. We also present the direct writing and transfer of holograms on silver, gold and steel for a new product line at the Royal Canadian Mint.

Primary author: Mr GUAY, Jean-Michel (University of Ottawa) Co-author: Mr COTE, Guillaume (University of Ottawa) Presenter: Mr COTE, Guillaume (University of Ottawa) Session Classification: DIAP Poster Session with beer / Session d’affiches, avec bière DPIA

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 453 2016 CAP Congr … / Report of Contributions PPD PHD award: Joint Three- …

Contribution ID: 1460 Type: Invited Speaker / Conférencier invité

PPD PHD award: Joint Three-Flavour Oscillation Analysis of νµ Disappearance and νe Appearance in the T2K Neutrino Beam Thursday, 16 June 2016 13:45 (30 minutes)

The T2K experiment is a long-baseline neutrino oscillation experiment based in Japan. Anoff-axis, high purity νµ beam is directed towards a near detector complex (ND280), situated 280 m from the neutrino production target, and the Super-Kamiokande (SK) far detector at 295 km. This talk describes the T2K beam and detectors, including a novel optical transition radiation monitor for precisely measuring the parent proton beam in order to determine the neutrino beam direction. A framework for evaluating the uncertainties in neutrino interactions and pion hadronic interactions in ND280 and SK is presented. A new SK event reconstruction algorithm is described and the SK detector systematic errors are evaluated based on atmospheric neutrino and cosmic ray muon data. These developments are used in a Markov Chain Monte Carlo neutrino oscillation analysis ofthe T2K Run 1-4 data corresponding to 0.657 × 1021 protons on target. The analysis simultaneously considers the ND280 νµ samples, and SK single muon and single electron samples, producing a measurement of νµ disappearance and νµ → νe appearance, and precise estimates of neutrino oscillation parameters. Measurements of θ13 from reactor neutrino experiments are combined with the T2K data resulting in the first hints toward non-zero δCP .

Primary author: Dr DE PERIO, Patrick (Columbia University) Presenter: Dr DE PERIO, Patrick (Columbia University) Session Classification: R2-2 Energy Frontier: Further Developments (PPD) / Frontière d’énergie: développements futurs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 454 2016 CAP Congr … / Report of Contributions Muon Spin Rotation/Relaxation as …

Contribution ID: 1461 Type: Invited Speaker / Conférencier invité

Muon Spin Rotation/Relaxation as a Probe of Unconventional Superconductivity Wednesday, 15 June 2016 10:00 (30 minutes)

There has been a resurgence of interest in superconductivity since the discovery of high temperature superconductivity in the cuprates. As a result, a variety of new superconductors with high transition temperatures and other interesting properties have been discovered. The muon spin rotation/relaxation (µSR) technique is an extremely sensitive probe of magnetic fields in materials and has been used to determine electronic/magnetic phase diagrams and measure the London penetration depth. Measurements in zero magnetic field ZF-µSR allowed us to identify a broken time reversal symmetry superconducting state in Sr2RuO4. The most likely superconducting state in this system isthe chiral p-wave state which could potentially be employed for quantum computation. I will describe our transverse field TF-µSR measurements of the vortex lattice in Sr2RuO4 determining the magnetic field penetration depth to further characterize its superconducting state. I will also describe some of our recent measurements of other novel superconductors including iron pnictides, the non-centrosymmetric CaIrSi3 and the strong spin-orbit coupled Pt0.05Ir0.95Te2.

Primary author: LUKE, Graeme (McMaster University) Presenter: LUKE, Graeme (McMaster University) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 455 2016 CAP Congr … / Report of Contributions The evolution of the undergraduat …

Contribution ID: 1462 Type: Invited Speaker / Conférencier invité

The evolution of the undergraduate physics curriculum at the University of Guelph Wednesday, 15 June 2016 13:15 (30 minutes)

Over the past decade we have made many changes to our undergraduate physics offerings, both for majors and non-majors alike. Throughout this process our goal has been to implement best practices from the Physics Education Research community, in such a way that we are mindful of resource implications. I will highlight some of the more significant changes we have made, such as designing and delivering an integrated course in first year that combines physics and calculus in a coordinated way, introducing gaming elements into our online course content for non-majors, and overhauling the full suite of undergraduate laboratory courses for our majors to provide more opportunities for guided inquiry. The presentation will also include a discussion of what wehave learned along the way, as well as plans for the future.

Primary author: O’MEARA, Joanne (University of Guelph) Co-author: WILLIAMS, Martin (University of Guelph) Presenter: O’MEARA, Joanne (University of Guelph) Session Classification: W2-2 Curriculum Development and Revitalization (DPE) / Développe- ment et revitalisation des programmes (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 456 2016 CAP Congr … / Report of Contributions Four state ferroelectric memory de …

Contribution ID: 1463 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Four state ferroelectric memory devices at room temperature Tuesday, 14 June 2016 19:52 (2 minutes)

We report the four step ferroelectric polarization switching in BiFeO3(BFO)/SrRuO3 (SRO)/BiMnO3(BMO) heterostructure thin films. All crystalline films are grown on (100) oriented Niobium doped SrTiO3 (NSTO) single crystal substrates by pulsed laser deposition. We found a novel four step ferroelectric polarization switching dynamics that clearly differs from that of individual layers. The binary states of ferroelectric polarization in ferroelectrics are considered for digital data storage applications. Multiple energy states of ferroelectric polarization are essential to shrinking the dimension down of the memory devices. No clear experimental evidences have been reported until now towards multi state ferroelectric polarization switching in multiferroic perovskites at room temperature. Our results show a promising device concept that can enhance the data storage capacity in heterostucture capacitor devices.

Primary author: Mr CHAKRABARTTY, Joyprokash (University of Quebec, INRS-EMT) Co-authors: Prof. ROSEI, Federico (University of Quebec, EMT-INRS); Dr CATALIN, Harnagea (University of Quebec); Dr CELEKIN, Mert (University of Quebec, INRS-EMT); Dr NECHACHE, Riad (Ecole de technologie supérieure (ETS))

Presenter: Mr CHAKRABARTTY, Joyprokash (University of Quebec, INRS-EMT) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 457 2016 CAP Congr … / Report of Contributions Standard Model and Higgs boson s …

Contribution ID: 1464 Type: Invited Speaker / Conférencier invité

Standard Model and Higgs boson studies with the ATLAS detector Wednesday, 15 June 2016 08:30 (30 minutes)

After about two years of operation, the excellent performance of the LHC and theATLAS detector made possible, a number of important experimental results, including precision test of the Standard Model and the discovery of a new scalar particle compatible with the Higgs boson. The ATLAS experiment has been enthusiastically analyzing the LHC data recorded acentre of mass energy of 8 TeV and 13 TeV. This talk will explore some of these recent results thatare pushing our understanding of the Standard Model and might open the door to more intriguing questions.

Primary author: MANJARRES, Joany (York University (CA)) Presenter: MANJARRES, Joany (York University (CA)) Session Classification: W1-2 Energy Frontier: Standard Model and Higgs Boson (PPD) / Frontière d’énergie: modèle standard et boson de Higgs (PPD)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 458 2016 CAP Congr … / Report of Contributions Investigating the Binding Capabili …

Contribution ID: 1465 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Investigating the Binding Capabilities of Triazole-Calix[4]arene Functionalized Microcantilever Sensors Towards Heavy Metals in Aqueous Solution Tuesday, 14 June 2016 19:40 (2 minutes)

The main objective of this work was to investigate the binding capabilities of the newly synthesized bimodal triazole-calix[4]arene functionalized microcantilevers towards selected heavy metals in aqueous solution. Gold-coated microcantilever sensors were first modified with a self-assembled monolayer of a calix[4]arene modified at both its upper- and lower-rims. Selected target metal ions (e.g. Hg2+, Fe3+, Ni2+, Zn2+, and Pb2+) were then introduced into a cell containing the functionalized microcantilevers. The interactions between the calix[4]arene-functionalized microcantilevers and the target analytes resulted in the formation of differential surface stresses which, in turn, resulted in a mechanical deflection of the microcantilever. Results showed that microcantilever arrays modified with triazole-calix[4]arene were capable of detecting trace concentrations of Hg2+ions as low as 10-11 M, which is sufficiently low for most applications. Results also showed that triazole-calix[4]arene functionalized microcantilevers were capable of detecting the presence of different heavy metal ions with high sensitivity and selectivity. A functionalization unit was also constructed in order to allow for the simultaneous functionalization of all eight microcantilevers in an array. By using this unit, it was possible to functionalize all microcantilevers with different sensing layers at the same time thus increasing the accuracy and reliability of the experimental results.

Primary author: Ms BRAIM, Mona (Memorial University) Co-authors: Dr ALODHAYB, Abdullah (Memorial University); Dr VALLURU, Gopikishore (Memo- rial University); Prof. BEAULIEU, L.Y. (Memorial University); Prof. GEORGHIOU, Paris (Memorial University); Dr RAHMAN, Shofiur (Memorial University) Presenter: Ms BRAIM, Mona (Memorial University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 459 2016 CAP Congr … / Report of Contributions High quality online content for Bl …

Contribution ID: 1466 Type: Oral (Non-Student) / orale (non-étudiant)

High quality online content for Blended/Flipped Physics classrooms, Successes and Challenges Thursday, 16 June 2016 09:45 (15 minutes)

The availability of high quality online material that was developed in house for an onlinecourse provided the impetus to do a complete Flipping of an introductory physics class for non-majors, and create a blended version for majors. We overview the material and the technology used and highlight the chosen selections for the pre-class component. We also discuss the effectiveness of the in class activities used and comment on how the experience can be enriched in light of extensive student feedback.

We comment on the potential pitfalls in flipping a classroom, in the pre class material, the in class activities as well as student push back. We also comment on the effect of demographic diversity on the reception and applicability of the flipped classroom.

Primary author: MANSOUR, firas (university of waterloo) Co-author: Dr POWER, Mary (University of Waterloo) Presenter: MANSOUR, firas (university of waterloo) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 460 2016 CAP Congr … / Report of Contributions Lasing in the nitrogen molecular ion

Contribution ID: 1467 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Lasing in the nitrogen molecular ion Tuesday, 14 June 2016 19:16 (2 minutes)

Lasing in the nitrogen molecular ion Mathew Britton, Patrick Laferriere, Ladan Arissian, Michael Spanner and P. B.Corkum Joint Attosecond Science Laboratory, National Research Council and University of Ottawa, Ottawa, Canada Intense light-matter interaction beyond a unimolecular limit faces unique challenges. Inthis regime, light and matter both have a non-negligible effect on each other. It is in thiscomplex environment that lasing has been discovered on a nitrogen molecular ion transition [1]. We investigate the gain dynamics in nitrogen ions created from a neutral gas by an intense ultrashort laser pulse. To isolate the phenomenon, we use a one atmosphere pure-nitrogen 200 µm thick gas jet in a vacuum chamber. The gain is initiated by an 800 nm pump pulse with intensity in the range of 2-4 x10^14 W/cm^2 and pulse duration of 27 fs. A weak second harmonic probe pulse monitors the time dependence of the gain on the B (v=0) to X (v=0) transition. We observe a peak gain of approximately 2 over a distance of about 200 µm and we measure gain as a function of nitrogen concentration, density, and intensity of the pump and probe. While the gain is present immediately (i.e. within the duration of the 27 femtosecond pump pulse) we observe two time-scales of decay: population inversion decay and rotational wave packet decay.

[1] see for example, G. Point, Y. Liu, Y. Brelet, S. Mitryukovskiy, P. Ding, A. Houard, and A. Mysy- rowicz, “Lasing of ambient air with microjoule pulse energy pumped by a multi-terawatt infrared femtosecond laser”, OPTICS LETTERS, 29, 1725, (2014)

Primary authors: ARISSIAN, Ladan (Joint Attosecond Science Laboratory, National Research Coun- cil and University of Ottawa, Ottawa, Canada); BRITTON, Mathew (Joint Attosecond Science Labo- ratory, National Research Council and University of Ottawa, Ottawa, Canada); SPANNER, Michael (Joint Attosecond Science Laboratory, National Research Council and University of Ottawa, Ottawa, Canada); LAFERRIERE, Patrick (Joint Attosecond Science Laboratory, National Research Council and University of Ottawa, Ottawa, Canada); CORKUM, Paul (Joint Attosecond Science Laboratory, National Research Council and University of Ottawa, Ottawa, Canada)

Presenters: BRITTON, Mathew (Joint Attosecond Science Laboratory, National Research Council and University of Ottawa, Ottawa, Canada); LAFERRIERE, Patrick (Joint Attosecond Science Labora- tory, National Research Council and University of Ottawa, Ottawa, Canada) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 461 2016 CAP Congr … / Report of Contributions The spontaneous Z2 breaking Twi …

Contribution ID: 1468 Type: Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

The spontaneous Z2 breaking Twin Higgs Thursday, 16 June 2016 14:30 (15 minutes)

The Twin Higgs model seeks to address the little hierarchy problem by making the Higgs apseudo- Goldstone of a global SU(4) symmetry that is spontaneously broken to SU(3). Gauge and Yukawa couplings, which explicitly break SU(4), enjoy a discrete Z2 symmetry that accidentally maintains SU(4) at the quadratic level and therefore keeps the Higgs light. Contrary to most beyond the Standard Model theories, the quadratically divergent corrections to the Higgs mass are cancelled by a mirror sector, which is uncharged under the Standard Model groups. However, the Twin Higgs with an exact Z2 symmetry leads to equal vevs in the Standard Model and mirror sectors, which is phenomenologically unviable. An explicit Z2 breaking potential must then be introduced and tuned against the SU(4) breaking terms to produce a hierarchy of vevs between the two sectors. This leads to a moderate but non-negligible tuning. We propose a model to alleviate thistuning, without the need for an explicit Z2 breaking sector. The model consists of two SU(4) fundamental Higgses, one whose vacuum preserves Z2 and one whose vacuum breaks it. As the interactions between the two Higgses are turned on, the Z2 breaking is transmitted from the broken to the unbroken sector and a small hierarchy of vevs is naturally produced. The presence of an effective tadpole and feedback between the two Higgses lead to a sizable improvement of the tuning. The resulting Higgs boson is naturally very Standard Model like.

Primary authors: BEAUCHESNE, Hugues (Carleton University); EARL, Kevin (Carleton Univer- sity); GREGOIRE, Thomas (Carleton University) Presenter: EARL, Kevin (Carleton University) Session Classification: R2-3 Testing Fundamental Symmetries II (PPD-DNP-DTP) / Tests de symétries fondamentales II (PPD-DPN-DPT)

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 462 2016 CAP Congr … / Report of Contributions Exploring Silicene mono- and mul …

Contribution ID: 1471 Type: Invited Speaker / Conférencier invité

Exploring Silicene mono- and multilayers of Silicene and their oxidation with soft X-ray spectroscopy and DFT calculations Wednesday, 15 June 2016 13:15 (30 minutes)

2012 brought the first reports of a new member of the 2D material family: a hexagonal honeycomb of Si atoms deposited on the Ag(111) surface called “silicene”[1]. The characteristics and stability of freestanding silicene had previously been theoretically explored [2], and there was a strong push to determine if the epitaxial sheets possessed the promising qualities of their hypo- thetical freestanding counterparts. Initially, ARPES experiments were thought to indicate that epitaxial silicene had a gapped Dirac cone in its electronic structure [1], as would be expected of freestanding silicene with a broken inversion symmetry. This enticing result, however, would be later overturned through a combination of experimental and theoretical techniques [3-5], and it would eventually be concluded that the epitaxial silicene sheet was in fact metallic with a strong cohesion to the underlying Ag(111) face. However, this conclusion would prove controversial [6,7], as the ambiguity of the ARPES data left some room for interpretation as to whether specific electronic features belonged to the epitaxial Si, the Ag substrate, or represented a hybridization between the two. Soft X-ray emission and absorption spectroscopy (XES and XAS) are synchrotron-based experimental techniques for directly probing the (element-specific) partial density of electronic states (PDOS) in the valence and conduction bands of a material. When performed at the Si L2,3 emission and Si 2p absorption edges, XES and XAS allowed us to unambiguously show that the Si valence and conduction states were continuous across the Fermi energy; i.e. that the silicene overlayer was indeed metallic [3]. However, for the material to be of use, it must be isolated from the substrate. One suggested way of achieving these characteristics is to produce a multilayer of silicene on the Ag(111) surface. However, other reports insist that bilayers and multilayers are inherently unstable, collapsing into bulk Si nanocrystals shortly after the monolayer deposition is complete [8]. Our DFT calculations [9] predict a stable, AA-stacked silicene bilayer on Ag(111) that corresponds nicely to the scanning tunnelling microscopy (STM) bilayer observations. Unfortunately, these same DFT calculations predict a similar electronic structure as that of the monolayers, namely metallic and bound to the Ag(111). However, our XES and XAS measurements indicate a transition to bulk, sp3-hybridized Si beginning shortly after the completion of a monolayer, supporting the low-energy electron microscopy study that first suggested the nucleation of the silicene sheets to bulk crystals [9]. Finally, we will discuss our recent study in which we explore how Silicene oxidizes [10]. References: [1] P. Vogt, P. De Padova, C. Quaresima, J. Avila, E. Frantzeskakis, M.C. Asesnsio, A. Resta, B.Ealet and G. Le Lay. Phys. Rev. Lett. 108, 155501 (2012). [2] S. Cahangirov, M. Topsakal, E. Aktürk, H. Şahin and S. Ciraci. Phys. Rev. Lett. 102, 236804 (2009). [3] N.W. Johnson, P. Vogt, A. Resta, P. De Padova, I. Perez, D. Muir, E. Z. Kurmaev, G. Le Lay and A. Moewes. Adv. Funct. Mater. 24, 5253 (2014) [4] S. Cahangirov, M. Audiffred, P. Tang, A. Iacomino, W. Duan, G. Merino and A. Rubio. Phys. Rev. B 88, 035432 (2013). [5] D. Tsoutsou, E. Xenogiannopoulou, E. Golias, P. Tsipas and A. Dimoulas. Appl. Phys. Lett. 103, 231604 (2013).

September 29, 2021 Page 463 2016 CAP Congr … / Report of Contributions Exploring Silicene mono- and mul …

[6] S. Huang, W. Kang and L. Yang. Appl. Phys. Lett. 102, 133106 (2013). [7] J. Avila, P. De Padova, S. Cho, I. Colambo, S. Lorcy, C. Quaresima, P. Vogt, A. Resta, G. Le Lay, M. C. Asensio. J. Phys.: Condens. Matter 25, 262001 (2013). [8] P. De Padova, P. Vogt, A. Resta, J. Avila, I. Razado-Colambo, C. Quaresima, C. Ottaviani, B. Olivieri, T. Bruhn, T. Hirahara, T. Shirai, S. Hasegawa, M. C. Asensio and G. Le Lay. Appl. Phys. Lett. 102, 163106 (2013). [9] N.W. Johnson, D. Muir, E.Z. Kurmaev, and A. Moewes, Adv. Funct. Mat. 25, 4083(2015).

[10] N.W. Johnson, D. Muir, A. Moewes, Sci. Rep. 6, 22510 (2016).

Primary author: Prof. MOEWES, Alexander (University of Saskatchewan) Co-author: Dr JOHNSON, Neil (University of Saskatchewan) Presenter: Prof. MOEWES, Alexander (University of Saskatchewan) Session Classification: W2-5 Thin Films II (DCMMP-DSS) / Couches minces II (DPMCM- DSS)

Track Classification: Surface Science / Science des surfaces (DSS)

September 29, 2021 Page 464 2016 CAP Congr … / Report of Contributions Interfacial degradation in organic t …

Contribution ID: 1473 Type: Invited Speaker / Conférencier invité

Interfacial degradation in organic thin films for optoelectronic and photovoltaic applications: challenges and opportunities Wednesday, 15 June 2016 09:45 (30 minutes)

After efficiency, lifetime is the second most important parameter for molecular photovoltaic devices. In organic solar cells (OPVs), heterojunctions play a defining in device stability. They also control the major processes: charge separation relies on effective organic/organic interfaces; charge transport is critically determined by the structure of the thin film, controlled by the organic/inorganic interfaces with substrates; and charge extraction can only occur at high quality inorganic/organic interfaces at the electrodes. This contribution reviews the current state of the art with regards to interfacial stability ofelec- trode/active layer interfaces to understand the performance of OPVs. From examples relating to interfacial chemical reactions, interfacial morphological changes, and interfacial electronic level modification, a comprehensive picture of the role of the organic-electrode interfaces indevice stability can be formed. Beginning with a brief overview of general degradation in organic devices, including definitions and measurement approaches, this contribution then focuses ontwo key interfaces within the device architecture. The first is the bottom contact (substrate) interface, where chemical reactions and dewetting are the two main mechanisms of device degradation. The second is the top contact interface, which is prone to oxidation, interdiffusion, blistering and de- lamination, and inhomogeneous loss of performance (dark spots). For both bottom and top contact interface degradation, various approaches to overcoming device instabilities are given, with special attention to the various interlayers that have been introduced for improved stability. Examples are given where degradation mechanisms are used advantageously to produce novel devices and surprising solutions to device degradation.

Primary author: TURAK, Ayse (McMaster University) Presenter: TURAK, Ayse (McMaster University) Session Classification: W1-5 Solar Energy Materials and Solar Cells (DCMMP-DAMOPC) / Matériaux pour l’énergie solaire et piles solaires (DPMCM-DPAMPC)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 465 2016 CAP Congr … / Report of Contributions NSERC’s Research Partnership Pro …

Contribution ID: 1474 Type: not specified

NSERC’s Research Partnership Programs / Programmes de partenariat de recherche du CRSNG Tuesday, 14 June 2016 12:00 (20 minutes)

This is a moderated panel discussion and Q&A (with NSERC reps, physicists and industry partners) on NSERC funding opportunities available to support researcher-industry partnerships. Learn how to get started, the challenges/rewards and tips for a successful partnership. Panelists will be named as they are confirmed.

Session Classification: NSERC’s Research Partnership Programs / Programmes de partenariat de recherche du CRSNG

Track Classification: Other Sessions or Meetings / Autres séances ou réunions

September 29, 2021 Page 466 2016 CAP Congr … / Report of Contributions Raman and Infrared Study of Phon …

Contribution ID: 1476 Type: Poster (Non-Student) / affiche (non-étudiant)

Raman and Infrared Study of Phonons in a Pyrochlore Superconductor Tuesday, 14 June 2016 20:00 (2 minutes)

Cd2Re2O7 is a pyrochlore superconductor with a transition temperature (TC ) near 2 K. The results of Raman scattering and far-infrared reflectance measurements will be presented. The temperature dependence of optical phonons has been investigated above and below TC via IR spectroscopy, and as a function of Oxygen and Cadmium isotope substitution in the normal state via Raman scattering. The dominant presence of lattice vibrational modes in the optical spectra suggests that electron-phonon interaction plays an important role in the normal and superconducting state properties.

Primary author: REEDYK, Maureen (Brock University) Co-authors: Prof. RAZAVI, Fereidoon (Brock University); Dr HAJIALAMDARI, Mojtaba (Brock University); Dr KREMER, Reinhard (Max Planck Institute for Solid State Research) Presenter: REEDYK, Maureen (Brock University) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 467 2016 CAP Congr … / Report of Contributions DNP Thesis Prize: Probing Trappe …

Contribution ID: 1477 Type: Invited Speaker / Conférencier invité

DNP Thesis Prize: Probing Trapped Antihydrogen: In situ diagnostics and resonant transitions Tuesday, 14 June 2016 16:15 (30 minutes)

Antihydrogen is the simplest pure anti-atomic system and an excellent candidate to test the symmetry between matter and antimatter. In particular, a precise comparison of the spectrum of anytihydrogen with that of hydrogen would be an excellent test of Charge-Parity-Time symmetry. The ALPHA antihydrogen experiment is able to produce and confine antihydrogen atoms in an Ioffe-Pritchard type magnetic neutral atom trap. Once confined, resonant transitions (eg. positron spin resonance transitions, 1S - 2S transitions) in the anti-atoms can be excited. In order to determine the resonant frequencies, the magnetic field seen by the antihydrogen atoms must be measured. This presents a significant challenge because the nature of the ALPHA apparatus effectively eliminates the possibility to insert magnetic probes into the antihydrogen trapping volume. Furthermore, because of the highly inhomogeneous nature of the magnetic trapping fields, external probes will not be able to measure the relevant magnetic fields.

To solve this problem ALPHA developed an in situ magnetometry technique based on the cyclotron resonance of an electron plasma in a Penning trap. This technique can measure the local field seen by the antihydrogen atoms and therefore determine the resonant frequency of the desired transition. With this technique ALPHA was able to perform the first ever resonant interaction with antihydrogen atoms by exciting the positron spin flip transition. This talk will present ourin situ magnetometry technique, the methods used to excite and identify positron spin flip transitions in antihydrogen, and future spectroscopic measurements being pursued by ALPHA.

Primary author: FRIESEN, Tim (Aarhus University (DK)) Presenter: FRIESEN, Tim (Aarhus University (DK)) Session Classification: T3-1 Hadronic Structure (DNP) / Structure hadronique (DPN)

Track Classification: Nuclear Physics / Physique nucléaire (DNP-DPN)

September 29, 2021 Page 468 2016 CAP Congr … / Report of Contributions Gravitational Screens as Quasi- …

Contribution ID: 1478 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Gravitational Screens as Quasi-local Observers Tuesday, 14 June 2016 19:20 (2 minutes)

The anti-de Sitter/conformal field theory correspondence and the membrane paradigm have illuminated many aspects of string and field theory, giving key insights into what a quantum theory of gravity might look like, while also providing tools to study a wide range of strongly coupled systems. In essence, these ideas are a statement of the holographic principle: a fundamental observation about our universe which states that all of the information contained in a bulk region of space-time can be encoded on the boundary of that region. However, these approaches are generally restricted to situations where knowledge of the boundary of space or the entire future history of the universe is required. From a practical point of view this is unsatisfactory. As local observers, we are not generally able to access these types of boundaries.

In an attempt to address these issues we use ‘gravitational screens’ as quasi-local observers. A gravitational screen is a two dimensional space-like hypersurface surrounding an arbitrary region of space-time. Projecting Einstein’s equations onto the screen results in the equations of non- equilibrium thermodynamics for a viscous fluid, which encode all of the information present inside the screen in terms of the holographic fluid on the surface, without being restricted to the event horizon of a black hole or to spatial infinity. In this project we study the dynamics and equations of state for screens in various space-times. Of particular interest are screens/geometries which have fluids obeying the second law of thermodynamics, since it is not obvious that an arbitrarily chosen screen will behave physically. We determine the properties of the fluids that arise from different background geometries, discuss their interpretation, and clarify the relationship between the gravitational degrees of freedom in the bulk, and the thermodynamic degrees of freedom on the screen.

Primary author: Mr SIMOVIC, Filip (University of Waterloo) Co-author: Dr FREIDEL, Laurent (Perimeter Institute for Theoretical Physics) Presenter: Mr SIMOVIC, Filip (University of Waterloo) Session Classification: DTP Poster Session with beer / Session d’affiches, avec bière DPT

Track Classification: Theoretical Physics / Physique théorique (DTP-DPT)

September 29, 2021 Page 469 2016 CAP Congr … / Report of Contributions The online preparatory course on…

Contribution ID: 1479 Type: Oral (Non-Student) / orale (non-étudiant)

The online preparatory course on basic mechanics for first year life-science students without HS background in physics. Wednesday, 15 June 2016 16:15 (15 minutes)

Under current admission conditions for the Faculty of Science at the University of Ottawa, students entering our faculty need to have equivalents of two advanced math courses (Advanced Functions, and Calculus and Vectors), as well as two of the three 4U science courses (Chemistry, Biology and Physics). At present time, roughly 30% of all admitted students are missing one of them, and itis invariably a physics course. Altogether, they make up more than half (nearly 350 in fall of 2015) of the students taking introductory life-science physics course (PHY1321). To address this issue within the program’s current credit constraints, we created a course known as PHY1331, in which students are offered an extra 80 minutes lecture time every week to be spent on basic mechanics concepts. Over the last ten years, this approach has been used with some success, when measured by the grade gaps between two groups of students at the start of the semester and at the end. In the fall of 2015, the online component of the course has been offered to students as a way to foster their familiarity with fundamental concepts of mechanics. It was offered as an option rewarded with extra credit against the final exam. By scoring the maximum points, students would be able to lower their final exam weight by 25%. Roughly 50 students participated in this exercise. In the presentation, the participants’ results on three identical tests will be compared with the results of non-participants, as well as with the scores of the students from PHY1321. The correlations and effectiveness of the proposed approach will be discussed, together with the specifics of the online course component’s structure. The conclusions and the resulting modifications forthe future mandatory, blended course of this type will also be presented.

Primary author: Prof. CZAJKOWSKI, Andrzej (University of Ottawa) Presenter: Prof. CZAJKOWSKI, Andrzej (University of Ottawa) Session Classification: W3-2 Teaching Physics to a Wider Audience (DPE) / Enseigner la physique à un auditoire plus vaste (DEP)

Track Classification: Physics Education / Enseignement de la physique (DPE-DEP)

September 29, 2021 Page 470 2016 CAP Congr … / Report of Contributions Present and Future Lead-based Su …

Contribution ID: 1480 Type: Poster (Non-Student) / affiche (non-étudiant)

Present and Future Lead-based Supernova Detectors Tuesday, 14 June 2016 19:10 (2 minutes)

Lead is an interesting target material for a supernova detector. The neutron excess in lead nuclei leads to Pauli-blocking of the charged-current νe interaction, and the high atomic number of lead Coulomb enhances νe over νe giving a large νe CC neutrino interaction cross-section. This leaves a lead-based SN detector dominantly sensitive to νe through CC channels and to a lesser extent to νx through NC channels. Therefore, such a detector complements the dominantly νe sensitivity of current water Cherenkov and liquid scintillator detectors worldwide. Supernova neutrinos, which undergo CC or NC interactions with the lead nuclei, eject one or two neutrons; so instrumenting lead with neutron detectors can be a cost efficient approach to robust supernova detector. The HALO detector at SNOLAB, running since May 2012, was designed to be a high live-time, low- maintenance, and low-cost dedicated supernova detector. HALO consists of a core of 79 tonnes of lead instrumented with 376 m of 3He neutron detectors and surrounded by a layer of water shielding. The measurement of the ratio of two detected neutrons to one neutron has beenshown to provide a measure of the temperature of the neutrinos, due to the distinct thresholds for one and two neutron emission in neutrino-lead interactions. Since October 2015 HALO has been a part of the network of SN neutrino sensitive detectors participating in the Supernova Early Warning System (SNEWS). The decommissioning of the OPERA detector at LNGS has potentially made available 1.3 kilo-tonnes of lead for future experiments. Efforts are currently underway to explore neutron detection technologies that could be used to instrument this sixteen-fold increase in mass for a more sensitive version of HALO at LNGS. The status of HALO at SNOLAB and plans for HALO at LNGS are reported.

Primary author: VIRTUE, Clarence (Laurentian University) Presenter: VIRTUE, Clarence (Laurentian University) Session Classification: PPD Poster Session with beer / Session d’affiches, avec bière PPD

Track Classification: Particle Physics / Physique des particules (PPD)

September 29, 2021 Page 471 2016 CAP Congr … / Report of Contributions Experiment friendly entanglement …

Contribution ID: 1481 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Experiment friendly entanglement witness for multipartite entanglement in atomic frequency combs Tuesday, 14 June 2016 19:18 (2 minutes)

Atomic frequency comb, an atomic ensemble with comb shaped optical transition, is useful for multimode photonic quantum memory where a photon is absorbed collectively over the teeth of the comb resulting in a multipartite entangled state. The teeth of the comb constitute the individual subsystems participating in the entanglement. Since each tooth of the comb consists of a macroscopic number of atoms (typically several thousand), the atomic frequency comb (AFC) system presents an entirely different class of entangled state, which we call the colossal entangled state, i.e., multipartite entanglement between macroscopic systems.

In this work we propose an experimentally realizable witness and entanglement measure for the colossal entanglement in the AFC systems which is the entanglement between the teeth of the AFC. The witness is achieved in two steps. First we determine the minimum number ofteeth coherently absorbing the photon, i.e., the coherence depth, from the signal to noise ratio of the light coming out of the AFC system. We argue that coherence depth is synonymous to entanglement depth, i.e., the minimum number of provably entangled systems, for the case when exactly one photon is present in the system. However, higher photon number component in the photonic states can cause differences between the coherence depth and the entanglement depth. We rectify this problem by estimating the probabilities P0 of no photon and P1 of having exactly one photon in the AFC system and using the bound on P1 for a given P0 and entanglement depth derived in [Hass et al. 2014]. Our method requires no prior knowledge of the number of teeth and is scalable. Furthermore, the method uses only macroscopic quantities to estimate the entanglement in the system, hence, is a suitable choice for the experimental demonstration of genuine multipartite entanglement. We have numerical and experimental results to support our entanglement witness.

Primary author: ZARKESHIAN, Parisa (University of Calgary) Co-authors: Dr SIMON, Christoph (University of Calgary); Dr HESHAMI, Khabat (National Re- search Council of Canada); SINCLAIR, Niel (University of Calgary); Dr GOYAL, Sandeep (University of Calgary); Dr TITTEL, Wolfgang (University of Calgary) Presenter: ZARKESHIAN, Parisa (University of Calgary) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 472 2016 CAP Congr … / Report of Contributions CJP Best Paper Award: The effect …

Contribution ID: 1482 Type: Invited Speaker / Conférencier invité

CJP Best Paper Award: The effect of quasiparticle-self-energy on Cd2Re2O7 superconductor Wednesday, 15 June 2016 08:30 (30 minutes)

The magnitude and the temperature dependence of the superconducting order parameter ∆(T ) of single-crystals of Cd2Re2O7 (Tc = 1.02~K) was measured using point-contact spectroscopy. In order to fit the conductance spectra and to extract the order parameter at different temperatures we generalized the Blonder-Tinkham-Klapwijk theory by including the self-energy of the quasiparticles into the Bogoliubov equations. This modification enabled excellent fits of the conductance spectra. ∆(T ) increases steeply below the superconducting transition temperature of 1.02 K and levels off below ∼0.8 K at a value of 0.22(1) meV, ≈40 \% larger than the BCS value. Our results indicate the presence of a strong electron-phonon interaction and an enhanced quasiparticle damping and may be related to a possible phase transition within the superconducting region at ∼0.8 K.

Primary author: Prof. MITROVIC, Bozidar (Department of Physics, Brock University) Presenter: Prof. MITROVIC, Bozidar (Department of Physics, Brock University) Session Classification: W1-1 Superconductivity (DCMMP) / Supraconductivité (DPMCM)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 473 2016 CAP Congr … / Report of Contributions Is “interactive” teaching sufficient …

Contribution ID: 1483 Type: Invited Speaker / Conférencier invité

Is “interactive” teaching sufficient to promote conceptual development in physics? Tuesday, 14 June 2016 13:15 (30 minutes)

Over the past few decades, systematic research has shown that many physics students express essentially the same (incorrect) ideas both before and after instruction. It is frequently assumed that these ideas can be identified by research and then addressed through “interactive” teaching approaches such as hands-on activities and small-group collaborative work. In many classrooms, incorrect ideas are elicited, their inadequacy is exposed, and students are guided in reconciling their prior knowledge with the formal concepts of the discipline. Variations of this strategy have proven fruitful in science instruction at all levels from elementary through graduate school. How- ever, this summary greatly over-simplifies the use of students’ ideas as the basis for effective instructional strategies. Examining what students have actually learned after using research-based curriculum is essential for improving the curriculum and validating its effectiveness.

Primary author: Prof. HERON, Paula (University of Washington) Presenter: Prof. HERON, Paula (University of Washington) Session Classification: T2-8 Doing Physics-doing Gender: Should gender issues be of any importance in the physics community? (CEWIP) / Physique et genre : les questions de genre devraient-elles avoir de l’importance dans la communauté de physique? (CEFEP)

Track Classification: Women in Physics / Femmes en physique (CEWIP-CEFEP)

September 29, 2021 Page 474 2016 CAP Congr … / Report of Contributions The Information Age in Condense …

Contribution ID: 1484 Type: Invited Speaker / Conférencier invité

The Information Age in Condensed Matter Physics Monday, 13 June 2016 14:45 (30 minutes)

Monte Carlo simulations have been ubiquitous in efforts to simulate and characterize properties of matter and materials since the advent of computers themselves. In the last decade, condensed matter physicists have turned simulation technology to the study of a new set of phenomena, loosely termed as “emergent”, with correlations not manifested in traditional correlation functions. Motivated by this, a new set of tools was recently developed that allows one to probe emergent phenomena in Monte Carlo simulations through their entanglement entropy - a concept borrowed from quantum information theory. Remarkably, since certain scaling terms in the entanglement entropy are universal, this provides a powerful general method to characterize phases and phase transitions in a wide variety of physical theories. Thus, Monte Carlo simulations are beginning to play a central role for physicists who increasingly rely on information quantities to study correlations not only in condensed matter systems and quantum devices, but even in quantum fields and theories of quantum gravity.

Primary author: Prof. MELKO, Roger (University of Waterloo) Presenter: Prof. MELKO, Roger (University of Waterloo) Session Classification: M-MEDAL CAP Medal Talk - Roger Melko, U. of Waterloo / Perime- ter Institute (CAP Herzberg Medal Recipient / Récipiendaire de la médaille Herzberg de l’ACP)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 475 2016 CAP Congr … / Report of Contributions Measuring the Total Angular Mom …

Contribution ID: 1485 Type: Invited Speaker / Conférencier invité

Measuring the Total Angular Momentum of Stars through Asteroseismology Wednesday, 15 June 2016 11:30 (30 minutes)

Have stars that end up as isolated white dwarfs lost their initial angular momentum as suggested by the relatively long rotation periods measured at their surfaces through spectroscopy? Could it be instead that a large fraction of that angular momentum is bound in a fast rotating core, hidden from direct observations, as proposed by some theories favouring a weak rotational coupling between the radiative core and the convective envelope in the previous red giant phase of stellar evolution? To answer these questions, we need to map the internal rotation profiles of representative white dwarfs. In the last few years, we have devised a way to exploit the signature that rotation imprints on the pulsation properties of white dwarfs in order to carry out such a mapping. The technique is particularly useful for pulsating white dwarfs of the so-called GW Vir type, for which the mapping can be done over essentially the full mass of the star, thus allowing a determination of the total angular momentum. Est-ce que les étoiles qui terminent leur vie stellaire sous la forme de naines blanches isolées ont perdu l’essentiel de leur moment cinétique comme semblent le suggérer les mesures de périodes de rotation de leurs couches superficielles obtenues par spectroscopie? Se pourrait-t-il, au con- traire, qu’une grande fraction du moment cinétique initial soit contenue dans les régions internes inacessibles à l’observation directe comme le proposent certaines théories de transfert (inefficace) de moment cinétique entre le noyau radiatif et l’enveloppe convective dans la phase évolutive des géantes rouges qui précède celle des naines blanches? Pour répondre à ces questions, il est nécessaire de cartographier le profil de rotation interne de naines blanches représentatives.

Au cours des récentes années, nous avons déeloppé une méthode pour exploiter la signature de la rotation sur les propriétés de pulsation des naines blanches et de déterminer ainsi ce profil de rotation interne. La technique est particulièrement utile pour les étoiles pulsantes de type GW Vir, pour lesquelles essentiellement toute la masse peut être échantillonnée, ce qui permet de calculer le moment cinétique total.

Primary author: Prof. FONTAINE, Gilles (Université de Montréal) Presenter: Prof. FONTAINE, Gilles (Université de Montréal) Session Classification: W-MEDAL2 CAP Medal Talk - Gilles Fontaine, U. de Montréal (Achievement Medal Recipient / Récipiendaire de la médaille pour contributions exception- nelles)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 476 2016 CAP Congr … / Report of Contributions S-Matrix Theory: A Bridge Betwe …

Contribution ID: 1486 Type: Invited Speaker / Conférencier invité

S-Matrix Theory: A Bridge Between Physics and Mathematics Thursday, 16 June 2016 11:00 (30 minutes)

Scattering amplitudes of massless particles have proven to be very interesting mathematical objects. While clearly defined in terms of Feynman diagrams, these seemingly complicated functions of several complex variables become shockingly simple after miraculous cancellations. In this talk I will explain how Riemann surfaces, cluster algebras and the positive Grassmannian are some of the mathematical ideas responsible for this surprising behavior of standard quantum field theory S-matrices.

Primary author: CACHAZO, Freddy (Perimeter Institute) Presenter: CACHAZO, Freddy (Perimeter Institute) Session Classification: R-MEDAL1 CAP Medal Talk - Freddy Cachazo, Perimeter Institute (CAP-CRM Prize in Theoretical and Mathematical Physics Recipient / Récipiendaire Prix ACP- CRM en physique théorique et mathématique)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 477 2016 CAP Congr … / Report of Contributions Excitonic Correlations and Their R …

Contribution ID: 1487 Type: Invited Speaker / Conférencier invité

Excitonic Correlations and Their Relationship to Solid-State Microstructure in Polymeric Semiconductors Wednesday, 15 June 2016 11:00 (30 minutes)

This presentation will summarise a body of work emanating from our research group overthe past five years. It focuses on correlating the properties of excitons with the complex solid-state microstructure in macromolecular semiconductors. In general, the optical properties of polymeric semiconductors are governed fundamentally by the interplay of electronic interactions occurring within a given polymer chain and those occurring between chains that constitute crystalline motifs. The competition between through-bond (intrachain) and through-space (interchain) electronic coupling determines two-dimensional spatial extent of excitons. The balance of these competing interactions depends very sensitively on solid-state microstructure of the polymer film (e.g. polycrystalline, semicrystalline with amorphous domains, etc.) Via analysis of absorption and photoluminescence spectral lineshapes, we have developed a protocol by which the spatial coherence of excitons, the degree to which the disordered landscape is correlated, and the interplay of intra- and interchain excitonic coupling in disordered polymeric semiconductors can be predicted when processing thin films within devices. I will outline novel ultrafast optical probes developed to probe in more detail the spectral correlations arising from excitonic properties of this class of materials.

Primary author: SILVA, Carlos (Université de Montréal) Presenter: SILVA, Carlos (Université de Montréal) Session Classification: W-MEDAL1 CAP Medal Talk - Carlos Silva, U. de Montréal (Brock- house Medal Recipient / Récipiendaire de la médaille Brockhouse)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 478 2016 CAP Congr … / Report of Contributions Quest for CP violation in neutrino …

Contribution ID: 1488 Type: Invited Speaker / Conférencier invité

Quest for CP violation in neutrino oscillations Thursday, 16 June 2016 11:30 (30 minutes)

Neutrino oscillation shows that different flavours of neutrinos, νe, νμ, and ντ, mix like quarks. Thus CP violation is expected due to the complex phase in the mixing matrix as is in the quark case. Since the observables of CP violation, namely difference between neutrino and anti-neutrino oscillations, is proportional to the three mixing angles, sinθ12, sinθ23 and sinθ13, all the three angles need to be large enough for the CP violation to be accessible. Since the discovery of the first neutrino oscillation in 1998, all these three mixing angles have been observed to be surprisingly large. The last angle sinθ13 was observed by T2K long baseline neutrino and Daya Bay/Reno reactor neutrino experiments. Because the T2K observable is also sensitive to CP violation, the comparison between T2K and reactor experiments shows a hint of potentially large effect due to CP violation phase. If the CP violation in neutrino oscillation is indeed large, it could naturally explain the matter vs. anti-matter asymmetry of the universe. An extension of T2K is being proposed to discover this leptonic CP violation in the decade. In this talk, I will present the status and prospect of the CP violation measurement in neutrino oscillation.

Primary author: KONAKA, Akira (TRIUMF) Presenter: KONAKA, Akira (TRIUMF) Session Classification: R-MEDAL3 CAP Medal Talk - Akira Konaka, TRIUMF (CAP-TRIUMF Vogt Medal Recipient/Récipiendaire de la médaille Vogt de l’ACP-TRIUMF)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 479 2016 CAP Congr … / Report of Contributions Going beyond “interactive”: devel …

Contribution ID: 1489 Type: Invited Speaker / Conférencier invité

Going beyond “interactive”: developing scientist-apprentices in the physics lecture hall Tuesday, 14 June 2016 10:30 (30 minutes)

Though an extensive amount of literature documents the improved learning gains made byinter- active teaching compared to traditional lecture delivery, results vary widely between courses[1]. Part of the problem is that different instructors aim for active learning through widely varying (and sometimes conflicting) approaches[2]. In addition, even the most well-verified and effective teaching approach will fail without student buy in. I propose a simple framework that can help you identify effective active learning instructional strategies and how to implement them successfully. Results (both positive and less than positive) from a large first-year physics course will be discussed. [1] one example among 100s: Freeman et al., Proceedings of the National Academy of Sciences 111, 8410 (2014). For a contrasting view, Andrews et al., CBE-Life Sciences Education 10, 394-405 (2011) [2] Turpen and Finkelstein, Physical Review Special Topics-Physics Education Research 5, 020101 (2009)

Primary author: Prof. FRASER, James M. (Queen’s University) Presenter: Prof. FRASER, James M. (Queen’s University) Session Classification: T-MEDAL CAP Medal Talk - James Fraser, Queen’s U. (Teaching Undergraduate Physics / Enseignement de la physique au 1er cycle)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 480 2016 CAP Congr … / Report of Contributions POLAR Science for Physicists

Contribution ID: 1490 Type: Invited Speaker / Conférencier invité

POLAR Science for Physicists Thursday, 16 June 2016 11:00 (30 minutes)

Canada occupies 25% of the Arctic and, of our three ocean coasts, the Arctic Ocean’s is by far the longest while being the least known. The strategic and economic importance of the North for Canadians and the world cannot be minimized. More than 100 000 people live in the north, a majority of whom are First Nations and Inuit. In view of the importance of the Polar Regions to Canadians, our government decided a year ago to create its own national polar agency, Polar Knowledge Canada (POLAR), with a goal of reconciling our knowledge base of the Arctic with the challenges we face. The objective of this presentation is enlighten my fellow physicists tothe challenges and opportunities that comes from polar research.

There are presently some significant gaps in our polar knowledge which much be filled tosafeguard the region and its people, as well as Canadians in general. The Arctic suffers from a phenomenon of Polar Amplification of its climate temperature as compared to pre-industrial times. Whilein the south we must adapt to a present 0.8℃ rise, in the north, this value is more like an additional 6℃. For example, no fewer than five of the global climate change tipping points, locations wherea small perturbation to the climatic stable state triggers a transition to an alternate climatic state, are located within our national boundaries or are tributary to the Canadian Arctic. In Earth System Science, a tipping point occurs when a small perturbation to a global climatic stable state, triggers a disproportionate transition to an alternate climatic state. Challenges to our Canadian sovereignty is of usual occurrence there, as marked by the frequent presence of foreign vessels. Our people, north of the 70th parallel, must burn costly, low-efficiency diesel to power and heat their communities, resulting in high economic and environmental impacts that constrain both their livelihood and quality of life. Sadly, Canada does not have the requisite 25% of the world’s polar-interested scientists to fill the knowledge gaps inhibiting solutions from being implemented. Photonics asa prime role to play in the Arctic. POLAR must work with international and national partners to achieve its national mission.

Presenter: Mr RICHARD, Boudreault (Chair, Polar Knowledge Canada) Session Classification: R-MEDAL2 CAP Medal Talk - Richard Boudreault, Chairman Po- lar Knowledge Canada (CAP-INO Medal for Outstanding Achievement in Applied Photon- ics)

Track Classification: Herzberg Public, Plenary, and Medal Talks / Conférenciers des sessions Herzberg, plénières et médaillés (CAP-ACP)

September 29, 2021 Page 481 2016 CAP Congr … / Report of Contributions Field synthesis at 1.8 microns for i …

Contribution ID: 1491 Type: Poster (Non-Student) / affiche (non-étudiant)

Field synthesis at 1.8 microns for isolated attosecond pulses Tuesday, 14 June 2016 19:20 (2 minutes)

Attaining an isolated attosecond pulse via high harmonic generation requires a temporal gatethat can act within one half cycle of the driving field. Here, we use the interplay of nonlinear optics and spatio-temporal coupling to synthesize a half-cycle pulse. The half cycle pulse is centered at 1.8 microns, the idler of an optical parametric amplifier, and is intense enough to generate isolated attosecond pulses, tuneable over an octave in the extreme ultraviolet. I will also discuss thistool to study attosecond dynamics in the condensed phase.

Primary author: HAMMOND, TJ (University of Ottawa/NRC) Presenter: HAMMOND, TJ (University of Ottawa/NRC) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 482 2016 CAP Congr … / Report of Contributions Anomalous magnetic moment (A …

Contribution ID: 1492 Type: Poster (Non-Student) / affiche (non-étudiant)

Anomalous magnetic moment (AMM) effect on some 2 2 2s 2p P3/2 lifetimes Tuesday, 14 June 2016 19:22 (2 minutes)

An experimental lifetime of exceptional accuracy [9.573(4)(5) (stat)(sys)] has been reported by 2 13+ Lapierre et al. [1] for the 2p P3/2 state of Ar . This result is in good agreement with theory [2] when neglecting the effect of the anomalous magnetic moment (AMM), namely 9.582(2) ms, whereas the lifetime with the AMM correction is 9.538(2) ms, well outside the experimental error bar. The theory method used by Tupisyn et al. started with the non-relativistic operator for the line 2 2 strength of the 2p P1/2 - P3/2 transition and applied relativistic perturbation theory to the calculation of the lifetime as the inverse of the transition probability between these two fine-structure levels. The General Relativistic Atomic Structure Package (GRASP2K) [3] is different. It relies onavari- ational method for determining wave functions for the initial and final states and then a matrix element for a transition operator which, in the Gordon form, can determine the lifetime both with and without the AMM correction, using the observed transition energy. Our lifetimes, 9.5804(16) ms and 9.536(16) ms, respectively are in excellent agreement with the Tupystin et al. values. In GRASP2K calculations, a check on the accuracy of the wave function is the prediction of the transition energy and this is the basis for our error estimate. Thus the discrepancy with experiment for Ar13+ remains unresolved. Data will be presented for other ions of the isoelectronic sequence. For K14+ a measured value [4] is closer to the value with the AMM correction but the uncertainty in the experimental lifetime is so large that it includes both values.

REFERENCES
[1] A. Lapierre et al., Phys, Rev. Letters, 95, 183001 (2005)
[2] I.I. Tupitsyn et al., Phys. Rev. A, 72, 062503 (2005)
[3] P. Jonsson et al., Comp. Phys. Commun., 184, 2197 (2013)
[4] E. Trabert et al., Phys. REv. A, **64””, 034501 (2001)

Primary author: FROESE FISCHER, Charlotte (NIST) Co-authors: GAIGALAS, Gediminas (Inst. of Theoretical Physics and Astronomy); GRANT, Ian (Applied Maths and Theoretical Physics); RYNKUN, Pavel (Inst. of Theoretical Physics and Astron- omy)

Presenter: FROESE FISCHER, Charlotte (NIST) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 483 2016 CAP Congr … / Report of Contributions Advancing Women in Science and …

Contribution ID: 1493 Type: Invited Speaker / Conférencier invité

Advancing Women in Science and Engineering: 2016 Update of the NSERC Chair for Ontario Tuesday, 14 June 2016 14:15 (30 minutes)

Chairholder Catherine Mavriplis will give an overview of the activities of the NSERC / Pratt & Whitney Canada Chair for Women in Science and Engineering for Ontario. As the Chair approaches the end of its term, we’ll look back at the impact it has had in several areas including interdisciplinary research in Communications, Education, Sociology and History. Since the Chair program launch, over 5000 people have been engaged in direct programming through 75 events, over 70 Canadian companies have been contacted, 15 Ontario universities have coordinated out- reach efforts, a strong online following has been developed (900 Twitter and over 100 LinkedIn followers, 1400 monthly web visitors), and the Chairholder has made 10 media appearances. Learn how you can get involved in this and other regional and national activities.

Primary author: Prof. MAVRIPLIS, Catherine (NSERC - Pratt & Whitney Chair for Women in Science and Engineering, Department of Mechanical Engineering, University of Ottawa)

Presenter: Prof. MAVRIPLIS, Catherine (NSERC - Pratt & Whitney Chair for Women in Science and Engineering, Department of Mechanical Engineering, University of Ottawa) Session Classification: T2-8 Doing Physics-doing Gender: Should gender issues be of any importance in the physics community? (CEWIP) / Physique et genre : les questions de genre devraient-elles avoir de l’importance dans la communauté de physique? (CEFEP)

Track Classification: Women in Physics / Femmes en physique (CEWIP-CEFEP)

September 29, 2021 Page 484 2016 CAP Congr … / Report of Contributions Achieving super-resolution throug …

Contribution ID: 1494 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Achieving super-resolution through nonlinear structured illumination Tuesday, 14 June 2016 19:24 (2 minutes)

Conventional imaging systems are limited in their optical resolution by diffraction. Thus, super- resolution techniques are required to overcome this limit. Many super-resolution techniques, such as structured illumination (SIM) [1,2], have been developed. However, these techniques often take advantage of linear optical processes and only a few techniques applicable to nonlinear optical processes exist [3, 4]. Here, we propose a scheme similar traditional SIM compatible with coherent nonlinear processes such as second- and third-harmonic generation and predict a resolution improvement of up to ~4 fold. In traditional SIM the resolution is doubled by capturing and utilizing spatial frequencies that would otherwise not be received by the imaging system [1]. This may be further enhanced if the saturable absorption of the fluorescent molecules can be utilized to collect even higher harmonics of the spatial frequencies [5]. Since coherent imaging systems are linear with respect to the electric field, the concepts of structured illumination may be generalized to nonlinear widefield microscopy modalities where field amplitudes instead of field intensities are measured [6]. We show thatthisis possible through the use of second-harmonic and third-harmonic widefield microscopy and show a resolution improvement of three- and four-fold, respectively. Our results suggest that a spatial resolution smaller than 100 nm may be achievable. References:

1. M.G.L Gustafsson. Journal of microscopy 198, 82-87 (2000). 2. E. Betzig et al. Science 313, 1642-1645 (2006). 3. C. Heinrich et al. Applied physics letters. 84, 816-818 (2004). 4. K.M Hajek et al. Optics express 18, 19263-19272 (2010). 5. M.G.L Gustafsson. Proceedings of the National Academy of Sciences of the United States of America 102, 13081-13086 (2005). 6. O. Masihzadeh et al. Optics express 18, 9840-9851 (2010).

Primary author: ABBAS, Aazad (University of Ottawa - Quantum Photonics Group) Co-authors: Mr HUTTUNEN, Mikko (University of Ottawa); BOYD, Robert (University of Ot- tawa)

Presenter: ABBAS, Aazad (University of Ottawa - Quantum Photonics Group) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 485 2016 CAP Congr … / Report of Contributions InGaN/GaN Nanostructures for Hi …

Contribution ID: 1495 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

InGaN/GaN Nanostructures for High Efficiency Solar Cells Tuesday, 14 June 2016 20:02 (2 minutes)

The InGaN/GaN material system is a promising candidate for the growth of highly efficientsolar cells. With direct nanowire growth on silicon, superior light trapping properties at low costs are possible. With the introduction of quantum well superlattices, intermediate states well below the bandgap of GaN enable the absorption of lower energy photons that would otherwise pass through the structure. In this work, we investigate the potential of InGaN/GaN nanowire heterostructures as candidates for novel solar cell designs on silicon via a combination of optical/electrical characterization and computer-aided device simulation. The InGaN/GaN nanowire heterostructures were grown via radio frequency plasma-assisted molecular beam epitaxy (MBE) on Si (111) [1]. Nanowires were grown as axially oriented p-i-n junctions with p-GaN and n-GaN regions as the emitter and base, respectively. Ten InGaN/GaN QD/s form the intrinsic region. The device is modelled as a bulk structure with ten quantum wells as the nanowire dimensions approach 100 nm. The large diameter of the QDs (~50 nm) permits the treatment of thequantum dots as quantum wells, since confinement is primarily along the growth axis. Confined states are solved via the Schrödinger equation for ten coupled quantum wells using Crosslight Apsys for various coupling regimes.

Current-voltage measurements, photoluminescence and electroluminescence spectroscopy of the nanowire solar cells were performed. External quantum efficiency (EQE) was measured as a function of increasing beam intensity and wavelength. The presence of non-negligible current generated at wavelengths below the bandgap of GaN, suggest photons are sequentially absorbed in the InGaN QDs and into the GaN conduction band for collection. This fulfills one of the requirements of an intermediate band solar cell. Future directions and design possibilities are discussed.

Primary author: CHERITON, Ross (University of Ottawa) Co-authors: Dr HINZER, Karin (University of Ottawa); Mr SADAF, Sharif (McGill University); Dr MI, Zetian (McGill Unversity)

Presenter: CHERITON, Ross (University of Ottawa) Session Classification: DCMMP Poster Session with beer / Session d’affiches, avec bière DPMCM

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 486 2016 CAP Congr … / Report of Contributions Women in Physics: What’s in it for …

Contribution ID: 1497 Type: Invited Speaker / Conférencier invité

Women in Physics: What’s in it for both men and women? / Table ronde - Les femmes en physique : qu’en retirent les hommes et les femmes? Tuesday, 14 June 2016 16:15 (1h 15m)

Panelists: Svetlana Barkanova (Acadia University), Melanie Campbell (University of Waterloo), Charlotte Froese Fischer (NIST), Adriana Predoi-Cross (University of Lethbridge), and Michael Steinitz (St. Francis Xavier University).

Session Classification: T3-6 Panel Discussion - Women in Physics: What’s in it for both men and women? (CEWIP) / Table ronde - Les femmes en physique : qu’en retirent les hommes et les femmes? (CEFEP)

September 29, 2021 Page 487 2016 CAP Congr … / Report of Contributions My research in computational ato …

Contribution ID: 1498 Type: Oral (Non-Student) / orale (non-étudiant)

My research in computational atomic physics Tuesday, 14 June 2016 14:00 (15 minutes)

In atomic physics, the many-body problem is computationally challenging. When theory is well understood, accurate calculations can predict results that may be difficult to measure experimentally. For heavy elements or highly ionized systems, relativistic and quantum electrodynamic effects, not to mention nuclear effects, are less well understood and computation can assessthe limitation of theory when results are compared with those from experiment.

This talk will describe how an honours degree in mathematics and chemistry from the University of British Columbia led to research in computational atomic physics.

Primary author: FROESE FISCHER, Charlotte (NIST) Presenter: FROESE FISCHER, Charlotte (NIST) Session Classification: T2-8 Doing Physics-doing Gender: Should gender issues be of any importance in the physics community? (CEWIP) / Physique et genre : les questions de genre devraient-elles avoir de l’importance dans la communauté de physique? (CEFEP)

Track Classification: Women in Physics / Femmes en physique (CEWIP-CEFEP)

September 29, 2021 Page 488 2016 CAP Congr … / Report of Contributions Orienting an ensemble of dipoles n …

Contribution ID: 1499 Type: Oral (Non-Student) / orale (non-étudiant)

Orienting an ensemble of dipoles near a dielectric interface Wednesday, 15 June 2016 14:30 (15 minutes)

Fluorescence of single dipole emitters near a dielectric interface are studied. A 15 nm thick layerof polystyrene lightly doped with Rhodamine 6G was spin-cast onto cleaned glass and PMMA coated glass slides. Flourescence lifetime was found to increase by a factor of three as the PMMA spacer layer thickness was increased. This lifetime increase is accounted for by a change in the ensemble averaged distribution of the dipole orientation from isotropic to perpendicular to the interface as the spacer layer thickness increases. This reorientation occurs proceeds takes place over a 200nm range (from 100 to 300nm) of buffer layer thicknesses. The ability to tune dipole orientation and hence charge injection into 2D materials.

Primary author: Mr HO, Xuan-Long (Yuan Ze University) Co-authors: WHITE, Jonathon David (Yuan Ze University); Mr CHEN, Po-Jui (Yuan Ze Univer- sity); Prof. WOON, Wei Yen (National Central University) Presenter: WHITE, Jonathon David (Yuan Ze University) Session Classification: W2-5 Thin Films II (DCMMP-DSS) / Couches minces II (DPMCM- DSS)

Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

September 29, 2021 Page 489 2016 CAP Congr … / Report of Contributions Comovement of Unrelated Equitie …

Contribution ID: 1500 Type: Poster (Non-Student) / affiche (non-étudiant)

Comovement of Unrelated Equities with Similar Ticker Symbols Tuesday, 14 June 2016 19:08 (2 minutes)

Correlation is used to analyze the daily returns of pairs of unrelated stocks with similar ticker symbols. By encoding the relationship between two Chinese ticker symbols by three digits, we found that, in contrast to the developed Western markets, comovement of stocks with similar ticker symbols is relatively common in the Taiwanese market. When the last two characters are identical, comovement influences the daily return of ~40% of stock pairs. These results suggest thatinvestor confusion has a important role to play in the return of stocks in developing markets.

Primary author: WHITE, Jonathon David (Yuan Ze University) Co-authors: Prof. CHIU, Chao Chang (Yuan Ze University); Prof. HSU, Yuan Lin (Shih Hsin University)

Presenter: WHITE, Jonathon David (Yuan Ze University) Session Classification: DIAP Poster Session with beer / Session d’affiches, avec bière DPIA

Track Classification: Industrial and Applied Physics / Physique industrielle et appliquée (DIAP-DPIA)

September 29, 2021 Page 490 2016 CAP Congr … / Report of Contributions The Canadian Atmospheric Tomo …

Contribution ID: 1501 Type: Oral (Non-Student) / orale (non-étudiant)

The Canadian Atmospheric Tomography System (CATS) Tuesday, 14 June 2016 17:15 (15 minutes)

C. Haley1, D. Degenstein2, R. Cooney3, and A. Bourassa2 1 Honeywell Aerospace 2 University of Saskatchewan 3 Canadian Space Agency

The Canadian Atmospheric Tomography System (CATS) is a UV/visible/near-IR spectrometer designed to measure limb-scattered sunlight to derive vertically-resolved concentrations of O3, NO2, and BrO and aerosol extinction from the Upper Troposphere through the Stratosphere. CATS is a follow-on to the Optical Spectrograph and Infrared Imager System (OSIRIS) instrument currently in operation on the Odin satellite. In addition to monitoring the stratosphere and extending the long time-series provided by OSIRIS, CATS will focus on the study of fine scale phenomena in the Upper Troposphere/Lower Stratosphere (UTLS) region. To accomplish this new goal, the current CATS design incorporates the following modifications over OSIRIS: 1) Increased spectral range, focussed on an improved aerosol product. 2) Better spectral resolution, aimed at improved NO2 and BrO data products. 3) Improved vertical resolution and sampling, important for measurements in the UTLS region. 4) Better horizontal (along-track) sampling, to allow a tomographic retrieval approach to beused. The current status of the CATS instrument design and development will be reviewed, highlighting the changes from the OSIRIS instrument design, the main outstanding technical risks, and the current development activities. Mission implementation options on either a dedicated microsatellite or as a payload on a small satellite will also be presented.

Primary author: Dr HALEY, Craig (Honeywell Aerospace) Presenter: Dr HALEY, Craig (Honeywell Aerospace) Session Classification: T3-7 Applied Physics in Non-Academic Environment (DIAP-DIMP) / La physique hors université (DPIA-DPIM)

September 29, 2021 Page 491 2016 CAP Congr … / Report of Contributions Hyperbolic Metamaterial Nano- …

Contribution ID: 1503 Type: Poster (Student, In Competition) / Affiche (Étudiant(e), inscrit àla compétition)

Hyperbolic Metamaterial Nano-Resonators Make Poor Single Photon Sources Tuesday, 14 June 2016 19:26 (2 minutes)

We study field and radiation attributes of photonic nano-resonators composed of alternating metal and dielectric layers, known as hyperbolic metamaterials (HMMs). HMMs offer the ability to confine light in ultra-small volumes and enhance its interaction with matter, thereby increasing the spontaneous emission rates of nearby photon emitters through the Purcell effect. It has been suggested that one of the first applications of HMM nanophotonics is in the domain of single photon sources for use in quantum cryptography and quantum plasmonics. Here we describe the physics of HMM nano-resonators in terms of open cavity resonant modes known as quasinormal modes (QNMs). Using an analytical expansion of the photon Green function in terms of QNMs, we introduce a modelling technique that is orders of magnitude faster that direct dipole solutions of Maxwell’s equations and offers considerable insight into the HMM coupling effects. Weshow how coupling to HMM nano-resonators can substantially increase spontaneous emission rates of quantum emitters by an order of magnitude more than pure metal resonators. However, in contrast to recent claims, we also show that most of this emission increase is lost to Ohmic heating. We demonstrate that, counter-intuitively, less metal present in the HMM resonator results in larger non-radiative losses. Using our semi-analytical QNM theory, we describe how this increase in photon quenching originates from an increased overlap between the metal and dielectric, which allows fields to leak or tunnel into the lossy metallic regions. We thus conclude that HMMnano- resonators likely make poor single photon sources, and that pure metallic resonators are preferred for single photon applications.

Primary authors: HELMY, Amr (University of Toronto); WONG, Herman (University of Toronto); KA- MANDAR DEZFOULI, Mohsen (Queen’s University); AXELROD, Simon (Queen’s University); HUGHES, Stephen (Queen’s University)

Presenter: AXELROD, Simon (Queen’s University) Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 492 2016 CAP Congr … / Report of Contributions NRC’s 100th Anniversary Public S …

Contribution ID: 1504 Type: Invited Speaker / Conférencier invité

NRC’s 100th Anniversary Public Session Wednesday, 15 June 2016 19:30 (2 hours)

MC – Richard Bourgeois-Doyle from NRC Basic and applied physics and standards Dr. Nelson Rowell NRC Photometry and Spectrophotometry Chemical physics Dr. Albert Stolow Canada Research Chair in Molecular Photonics, University of Ottawa Astrophysics Dr. Gregory Fahlman NRC General Manager, NRC Herzberg Biological physics Dr. Linda Johnston NRC Nanoscale Measurement

Physics for industrial applications Dr. Sylvain Charbonneau Associate Vice-President, Research, University of Ottawa

Session Classification: 100 Years in 100 Minutes: A Century of Physics at the National Re- search Council of Canada / 100 ans en 100 minutes : Un siècle de physique au Conseil national de recherche du Canada

September 29, 2021 Page 493 2016 CAP Congr … / Report of Contributions Generation of vortex beam superp …

Contribution ID: 1505 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Generation of vortex beam superpositions using angular gratings Tuesday, 14 June 2016 19:28 (2 minutes)

Vortex beams form a class of beams carrying orbital angular momentum (OAM). A single photon carries lħ OAM where l represents the OAM state and a beam with non-zero OAM state has a zero intensity at its centre and a helical phase wavefront. Vortex beams have gained interest for their applications in optical manipulation, optical communication and quantum information [1-3]. In particular, they can enhance communication security by improving the quantum key distribution (QKD) procedure [4]. The original proposal uses the photon polarization degree of freedom, resulting in each photon carrying a single bit. Since OAM states are unbounded and mutually orthogonal, using instead the OAM degree of freedom as a basis enables far greater channel capacity. As QKD requires superpositions of states, this improved version of QKD requires superpositions of different OAM values. There are many ways to generate vortex beams with bulk optics, such as spiral phase plates,spatial light modulators, q-plates and cylindrical lens mode converters [5-8]. However, an integrated photonic approach has advantages over bulk optics because of its scalability, stability and small size. It turns out that ring resonators with lateral grating elements, called angular gratings, radiates a vortex above the structure when on resonance [9,10]. To generate a superposition of vortex beams, we expand this idea to a single ring with two sets of gratings, one on the inside wall and one on the outside. We then show with simulations that, after post-selecting on one of the circular polarizations, we can generate OAM superposition states based on the number of grating elements for each grating.

1. J. E. Curtis, D. G. Grier Phys. Rev. Lett. 90, 133901 (2003). 2. G. Gibson et al. Optics Express 12, 5448-5456 (2004). 3. R. W. Boyd et al. Proc. Of SPIE, 7948, 79480L (2011). 4. A. Mair et al. Nature 412, 313-316 (2001). 5. M. W. Beijersbergen et al. Opt. Commun. 112, 321 (1994). 6. V. Y. Bazhenov et al. J. Mod. Opt. 39, 985 (1992). 7. L. Marrucci et al. Phys. Rev. Lett. 96, 163905 (2006). 8. L. Allen et al. Phys. Rev. A 45, 8185 (1992) 9. Y. F. Yu et al. Optics Express 18, 21651-21662 (2010). 10. X. Cai et al. Science 338, 363-366 (2012).

Primary author: Ms DICAIRE, Marie-Claude (University of Ottawa) Co-authors: Prof. KARIMI, Ebrahim (University of Ottawa); Dr UPHAM, Jeremy (University of Ottawa); Prof. BOYD, Robert (University of Ottawa); Dr SCHULZ, Sebastian (University of Ot- tawa)

Presenter: Ms DICAIRE, Marie-Claude (University of Ottawa)

September 29, 2021 Page 494 2016 CAP Congr … / Report of Contributions Generation of vortex beam superp …

Session Classification: DAMOPC Poster Session with beer / Session d’affiches avec bière DPAMPC

Track Classification: Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

September 29, 2021 Page 495 2016 CAP Congr … / Report of Contributions NEMA Standard Measurements in …

Contribution ID: 1507 Type: Oral (Non-Student) / orale (non-étudiant)

NEMA Standard Measurements in Pre-clinical PET Imaging Tuesday, 14 June 2016 09:45 (15 minutes)

NEMA (National Electrical Manufacturers Association) Standard Measurements are used for evaluating the performance of the positron emission tomography scanners used in animal imaging. There are various measurements, including spatial resolution, scatter fraction, sensitivity, andim- age quality. In this study the effects of varying the testing procedures of the NEMA NU4-2008 standard for measuring sensitivity and image quality for a small animal PET scanner were examined. In the current NEMA NU4 2008 standard, the sensitivity is measured by stepping a Na-22 point source through the field of view of the scanner along the central Z axis. In some scanners it isnotpossi- ble to automate the collection of this data, making it very tedious, if not impossible, to acquire the necessary data. As an alternative method, we explore using a long uniform line source extended beyond the field of view in the axial direction and validated this method by comparing ourresults with those obtained from the standard method. Two line sources were imaged, the first a 70-cm long plastic tube filled with 6 MBq of F-18 (NEMA line source for clinical scanners) and thesecond a standard 20-cm long Ge-68 sealed line source (0.90 MBq). Point source data were sorted and analysed following the NEMA NU4-2008 method to calculate sensitivity profiles to be plotted asa function of axial distance relative to the center of the field of view. Line source data were analyzed in a manner analogous to the NEMA NU2-2001 method for calculating sensitivity for clinical PET systems. The results from the F-18 and Ge-68 are in good agreement with those from aNa-22 point source (0.93 MBq) using the NEMA standard methods. The difference in absolute sensitivity between Na-22 and the line sources are 0.90% for F-18 and 1.7% for Ge-68 line source. These results represent the equivalence of the sensitivity measurements using a line source or a point source.

Primary author: ELHAMI, Esmat (University of Winnipeg) Presenter: ELHAMI, Esmat (University of Winnipeg) Session Classification: T1-1 Medical Imaging (DPMB) / Imagerie médicale (DPMB)

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 496 2016 CAP Congr … / Report of Contributions Towards measurements on intram …

Contribution ID: 1508 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Towards measurements on intramolecular velocity fluctuations during DNA transport through nanopores Tuesday, 14 June 2016 19:20 (2 minutes)

Despite considerable technical progress in recent years, DNA sequencing is still a time and resource consuming procedure. Finding inexpensive, easy, and reliable alternative DNA sequencing strategies is a tall task. As recently demonstrated on biological pores, a promising approach to this challenge is the use of nanopores to characterize single strands of DNA. The advantages of nanopore technology for the characterization of DNA are manifold. The ability to directly interrogate single molecules electrically in the nanopore makes this approach very competitive over conventional DNA sequencing techniques, by sample preparation, reducing cost, and enabling point-of-need sequencing. However before solid-state nanopore devices can also be used to sequence DNA some challenges need to be overcome. The transport dynamics of DNA through solid-state nanopores have been intensively studied for a few years but the control of motion and speed proves to be very difficult on solid-state devices. In this poster, branched DNA molecules specifically designedto measure intra-molecular translocation velocities of DNA polymers through solid-state nanopores fabricated by controlled breakdown (CBD) will be described. Finally, preliminary results of the building blocks of these branched DNA molecules will be presented. The ultimate goal is to develop a better understanding of the kinetics of DNA transport in these pores, which isoneofthe crucial steps towards implementing solid-state nanopore based DNA sequencing.

Primary author: KARAU, Philipp (University of Ottawa) Co-authors: Mr BRIGGS, Kyle (University of Ottawa); Prof. TABARD-COSSA, Vincent (University of Ottawa)

Presenter: KARAU, Philipp (University of Ottawa) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 497 2016 CAP Congr … / Report of Contributions ZMW Nanopore Fabrication by Co …

Contribution ID: 1509 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

ZMW Nanopore Fabrication by Controlled Breakdown for Single-Molecule Sensing Tuesday, 14 June 2016 19:22 (2 minutes)

The last decade has seen significant advancements in nanofluidic devices to study transportpro- cesses at the single-molecule level. In particular, exciting results have been obtained through the study of passage of nucleic acids through solid-state nanopores (ssNP). ssNP are nanometer-sized holes in thin dielectric membranes, which have emerged as a versatile tool to investigate a wide range of phenomena involving DNA and proteins. Controlled breakdown (CBD) is a technique for fabricating such ssNP involving sustained high electric fields that was recently developed byour group as a low-cost, high-yield alternative to traditional focused ion-beam/TEM drilling methods. We have characterized the ability of CBD to create pores in substrates of increasing complexity. Devices incorporating different materials and advanced functionalization represent a crucial step toward refining the capabilities of ssNP as single-molecule sensors of electrophoretically-driven biomolecules, and increasing their range of potential applications. To this end, we demonstrate pore fabrication by CBD through multilayer dielectric membranes equipped with an embedded metal electrode. A thin gold layer was deposited on 10/30 nm SiNx membranes by thermal evaporation, followed by the addition of a second dielectric (HfO2) to both sides using atomic layer deposition. After pore fabrication, conductance-based models are used to extract an effective nanopore diameter, which can be compared to values obtained from TEM imaging and by using passing, voltage-driven DNA as a molecular-sized ruler through its effect on ionic current. Applied to these membranes, the CBD process resulted in structures consisting of a nanopore surrounded by a concentric area of removed metal 100s of nm in diameter. By using laser-excited Ca2+ fluorescent dyes, the ability of these structures to act as zero-mode waveguides, attenuating the fluorescence signal away from the pore and enabling high-contrast optical detection of single-molecules, can be characterized.

Primary author: Mr ROELEN, Zachary (University of Ottawa) Co-author: Dr TABARD-COSSA, Vincent (University of Ottawa) Presenter: Mr ROELEN, Zachary (University of Ottawa) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 498 2016 CAP Congr … / Report of Contributions Optimizing Nanopores for Single- …

Contribution ID: 1510 Type: Poster (Student, Not in Competition) / Affiche (Étudiant(e), pas dans la compétition)

Optimizing Nanopores for Single-Molecule Counting and Target Quantification Tuesday, 14 June 2016 19:24 (2 minutes)

Nanopores have proven to be useful single-molecule sensing tools in the past two decades. One of the many promising applications of these electrical nano-sensors is to act as molecular counting devices with single-molecule sensitivity, essentially determining concentrations of specific molecular species. To achieve this, it is essential to develop a better understanding of the nanopore capture process and the factors affecting the reliability and accuracy of such nano-devices. This poster will present our investigation of the mechanisms controlling the nanopore capture process and the factors affecting its reliability for nanopores specifically fabricated using the recently developed controlled dielectric breakdown (CBD) technique. Using 50bp dsDNA to translocate through the nano-sensors, the energy barrier and system resolution limit of pores of different sizes are studied and are used to determine what parameters are optimal for efficiently counting this type of molecule.

Primary author: CHARRON, Martin (University of Ottawa) Co-authors: Dr BAKER-MURRAY, Aidan (University of Ottawa); Ms TIPPINS, Caroline (University of Ottawa); Mr KARAU, Philipp (University of Ottawa) Presenter: CHARRON, Martin (University of Ottawa) Session Classification: DPMB Poster session, with beer / Session d’affiches DPMB, avec bière

Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

September 29, 2021 Page 499 2016 CAP Congr … / Report of Contributions P.Phys. Professional Practice Sessi …

Contribution ID: 1511 Type: not specified

P.Phys. Professional Practice Session / Séance sur la désignation d’exercice professionnel phys. Wednesday, 15 June 2016 18:45 (1h 15m)

In this session we will discuss recent developments related to the P.Phys. designation and a review of the ongoing efforts to improve the P.Phys. model. We will focus on professional development programs typically in place for other professional designations and potential improvements in this area for P.Phys.

Dans cette séance, nous allons discuter des développements récents liés à la désignation phys.etun examen des efforts continus pour améliorer le modèle de phys. Nous allons nous concentrer surles programmes de perfectionnement professionnel généralement en place pour d’autres désignations professionnelles et les améliorations possibles dans ce domaine pour la désignation phys.

Session Classification: Professional Practice Development / Développement d’exercice professionnel

September 29, 2021 Page 500 2016 CAP Congr … / Report of Contributions NSERC SAPES Chair’s Report

Contribution ID: 1512 Type: Oral (Non-Student) / orale (non-étudiant)

NSERC SAPES Chair’s Report Sunday, 12 June 2016 13:30 (35 minutes)

30 min presentation + 5 min questions

Primary author: RITZ, Adam (University of Victoria) Presenter: RITZ, Adam (University of Victoria) Session Classification: Joint CINP-IPP Meeting / Réunion conjointe de l’ICPN et de l’IPP (DPN-PPD)

September 29, 2021 Page 501 2016 CAP Congr … / Report of Contributions News from CFI

Contribution ID: 1513 Type: Oral (Non-Student) / orale (non-étudiant)

News from CFI Sunday, 12 June 2016 14:05 (25 minutes)

20 min presentation + 5 min questions

Primary author: GAGNON, Olivier (CFI) Presenter: GAGNON, Olivier (CFI) Session Classification: Joint CINP-IPP Meeting / Réunion conjointe de l’ICPN et de l’IPP (DPN-PPD)

September 29, 2021 Page 502 2016 CAP Congr … / Report of Contributions TRIUMF Director Report

Contribution ID: 1514 Type: Oral (Non-Student) / orale (non-étudiant)

TRIUMF Director Report Sunday, 12 June 2016 14:30 (35 minutes)

30 min presentation + 5 min questions

Primary author: BAGGER, Jonathan (TRIUMF) Presenter: BAGGER, Jonathan (TRIUMF) Session Classification: Joint CINP-IPP Meeting / Réunion conjointe de l’ICPN et de l’IPP (DPN-PPD)

September 29, 2021 Page 503 2016 CAP Congr … / Report of Contributions SNOLab Director Report

Contribution ID: 1515 Type: Oral (Non-Student) / orale (non-étudiant)

SNOLab Director Report Sunday, 12 June 2016 15:05 (25 minutes)

20 min presentation + 5 min questions

Primary author: SMITH, Nigel (SNOLab) Presenter: SMITH, Nigel (SNOLab) Session Classification: Joint CINP-IPP Meeting / Réunion conjointe de l’ICPN et de l’IPP (DPN-PPD)

September 29, 2021 Page 504 2016 CAP Congr … / Report of Contributions Subatomic Long Range Plan Report

Contribution ID: 1516 Type: Oral (Non-Student) / orale (non-étudiant)

Subatomic Long Range Plan Report Sunday, 12 June 2016 15:30 (45 minutes)

30 min presentation + 15 min questions

Primary author: KARLEN, Dean (University of Victoria (CA)) Presenter: KARLEN, Dean (University of Victoria (CA)) Session Classification: Joint CINP-IPP Meeting / Réunion conjointe de l’ICPN et de l’IPP (DPN-PPD)

September 29, 2021 Page 505 2016 CAP Congr … / Report of Contributions IPP Director’s Report & Council El …

Contribution ID: 1517 Type: not specified

IPP Director’s Report & Council Election Results Sunday, 12 June 2016 16:30 (30 minutes)

Presenter: RONEY, Michael (University of Victoria) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 506 2016 CAP Congr … / Report of Contributions PICO

Contribution ID: 1518 Type: not specified

PICO Sunday, 12 June 2016 17:00 (15 minutes)

Presenter: NOBLE, Tony (Queen’s University) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 507 2016 CAP Congr … / Report of Contributions SNO+

Contribution ID: 1519 Type: not specified

SNO+ Sunday, 12 June 2016 17:15 (15 minutes)

Presenter: CHEN, Mark (Q) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 508 2016 CAP Congr … / Report of Contributions ATLAS

Contribution ID: 1520 Type: not specified

ATLAS Sunday, 12 June 2016 17:30 (15 minutes)

Presenter: KRIEGER, Peter (University of Toronto (CA)) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 509 2016 CAP Congr … / Report of Contributions Belle II

Contribution ID: 1521 Type: not specified

Belle II Sunday, 12 June 2016 17:45 (15 minutes)

Presenter: ROBERTSON, Steven (McGill) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 510 2016 CAP Congr … / Report of Contributions Theory Support

Contribution ID: 1522 Type: not specified

Theory Support Sunday, 12 June 2016 18:00 (15 minutes)

Presenter: GREGOIRE, Thomas (Carleton University) Session Classification: IPP AGM / AGA de l’IPP

September 29, 2021 Page 511 2016 CAP Congr … / Report of Contributions Particle Astrophysics CFREF

Contribution ID: 1523 Type: not specified

Particle Astrophysics CFREF Monday, 13 June 2016 08:00 (15 minutes)

Presenter: NOBLE, Tony (Queen’s University) Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 512 2016 CAP Congr … / Report of Contributions DEAP

Contribution ID: 1524 Type: not specified

DEAP Monday, 13 June 2016 08:15 (15 minutes)

Primary author: Prof. BOULAY, Mark (Carleton University) Presenters: HALLIN, Aksel (University of Alberta); Prof. BOULAY, Mark (Carleton University)

Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 513 2016 CAP Congr … / Report of Contributions UCN

Contribution ID: 1525 Type: not specified

UCN Monday, 13 June 2016 08:30 (15 minutes)

Presenter: MARTIN, Jeffery (The University of Winnipeg) Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 514 2016 CAP Congr … / Report of Contributions NSERC MRS Reports

Contribution ID: 1526 Type: not specified

NSERC MRS Reports Monday, 13 June 2016 08:45 (15 minutes)

Presenter: RONEY, Michael (University of Victoria) Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 515 2016 CAP Congr … / Report of Contributions Detector Infrastructure

Contribution ID: 1527 Type: not specified

Detector Infrastructure Monday, 13 June 2016 09:00 (15 minutes)

Presenter: RETIERE, Fabrice (TRIUMF) Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 516 2016 CAP Congr … / Report of Contributions Compute Canada

Contribution ID: 1528 Type: not specified

Compute Canada Monday, 13 June 2016 09:15 (15 minutes)

Presenter: O’NEIL, Dugan (SFU Simon Fraser University (CA)) Session Classification: IPP Town Hall II / Consultation publique de l’IPP II

September 29, 2021 Page 517 2016 CAP Congr … / Report of Contributions A Journey to the Dark Side … Som …

Contribution ID: 1529 Type: Invited Speaker / Conférencier invité

A Journey to the Dark Side … Some alternate uses of your physics degree Tuesday, 14 June 2016 17:30 (30 minutes)

Bio Neil Rowlands obtained his B.Sc (Engineering Physics) from the University of Alberta in 1985 and his Ph.D. (Astronomy) from Cornell University in 1991. At Cornell, he participated in the construction and use of infrared instrumentation for the Kuiper Airborne Observatory and the 5m Hale telescope at Mt. Palomar. After post-doctoral fellowships at the Université de Montréal, and at the Canada Centre for Remote Sensing where he worked with infrared instrumentation, he joined CAL Corporation (Ottawa, ON), now Honeywell Aerospace, as an electro-optical engineer. Since 1995 he has been developing space-borne scientific instrumentation for the space physics, atmospheric sciences and astronomy communities. He is currently a Staff Scientist at Honeywell in Ottawa. He has been working on the Canadian contribution to the James Webb Space Telescope (JWST) project, the Fine Guidance Sensor (FGS/NIRISS), since 1997.

Primary author: Dr ROWLANDS, Neil (Honeywell Aerospace) Presenter: Dr ROWLANDS, Neil (Honeywell Aerospace) Session Classification: Carl Zeiss Canada Student-Industry Meet & Mingle / Session de réseautage industrie-étudiants

September 29, 2021 Page 518 2016 CAP Congr … / Report of Contributions Voting Instructions / Instructions p …

Contribution ID: 1530 Type: not specified

Voting Instructions / Instructions pour voter Wednesday, 15 June 2016 17:15 (30 minutes)

Session Classification: CAP Annual General Meeting with election of Board and Advisory Council members/ Assemblée générale annuelle de l’ACP avec election des membres du c.a. et du conseil consultatif

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