DOCSLIB.ORG

The Microboone Lartpc

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Microboone Lartpc The MicroBooNE LArTPC Sarah Lockwitz, FNAL 2013 DPF August 15, 2013 MicroBooNE is a LAr TPC • A liquid argon (LAr) time-projection chamber (TPC) NuMI Beam Wilson Hall • It will be placed in the Booster Neutrino beam at Fermilab Booster • It has both physics and R&D goals: Booster Neutrino Beam • Physics: High-statistics measurements of ν’s on Ar Tevatron • Investigate MiniBooNE’s low- energy excess • R&D: Gain experience building & operating a LArTPC Main Injector • Will put a near featured efforts DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 2 MicroBooNE is a LAr TPC • A liquid argon (LAr) time-projection chamber (TPC) NuMI Beam Wilson Hall • It will be placed in the Booster Neutrino beam at Fermilab Booster • It has both physics and R&D goals: Booster Neutrino Beam • Physics: High-statistics measurements of ν’s on Ar B. Carls talk will Tevatron • Investigate MiniBooNE’sfocus on this low- energy excess • R&D: Gain experience building & operating a LArTPC Main Injector • Will put a near featured efforts DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 2 MicroBooNE is a LArTPC DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 MicroBooNE is a LArTPC • LArTPCs have great imaging potential DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 MicroBooNE is a LArTPC • LArTPCs have great imaging potential • MINOS event display: DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 MicroBooNE is a LArTPC • LArTPCs have great imaging potential • MINOS event display: νe Interaction • MiniBooNE event display: DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 MicroBooNE is a LArTPC • LArTPCs have great imaging potential • MINOS event display: νe Interaction • MiniBooNE event display: • T2K event display: http://t2k-experiment.org From T2K, From DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 MicroBooNE is a LArTPC 200 300 400 500 600 700 • LArTPCs have great imaging 2200 potential 2000 1800 1600 • MINOS event display: 1400 νe Interaction 1200 300 350 400 450 500 550 600 650 • MiniBooNE event display: 2200 2000 • T2K event display: 1800 1600 1400 2200 • MicroBooNE: 2000 1800 http://t2k-experiment.org 1600 1400 500 600 700 800 900 1000 40 - T2K, From e [2.0 GeV/c] + Ar e [1.3 GeV/c] + p [0.7 GeV/c] + p [0.9 GeV/c] + X2000000101 + X2000000101 1 LArSoft 0.8 q [ADC] Run: 1/0 0.6 Event: 4 0.4 Monte Carlo UTC Thu Jan 1, 1970 0.2 00:00:0.020000000 0 0 500 1000 1500 2000 2500 3000 t [ticks] DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 3 Liquid Argon Work at Fermilab Materials/ Electronics Test LAPD Multikiloton Stand LAr detector 2008 2014 LBNE • Cryostat – 150’’ ID x 40 ft long x 7/16’’ 100% 100% R&D thick; weighs about 70,000 lbs – Full Vacuum – 30 psig Physics – About 35,000 gal. Liquid Argon – Insulated by 16’’ Closed Cell Spray Heat load calcs performed by Glenn Morgan on Polyurethane 2007 – Supported2010 by 2 High Density (12- ????? 15 pcf) Polyurethane Saddles – Ribbed design Cryostat at DZero MicroBooNE ArgoNeuT (also LArIAT & 35T) DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 4 Liquid Argon Work at FermilabICARUS Pioneering LAr in Europe Materials/ 2001, 2010 Electronics Test LAPD Multikiloton Stand LAr detector 2008 2014 LBNE • Cryostat – 150’’ ID x 40 ft long x 7/16’’ 100% 100% R&D thick; weighs about 70,000 lbs – Full Vacuum – 30 psig Physics – About 35,000 gal. Liquid Argon – Insulated by 16’’ Closed Cell Spray Heat load calcs performed by Glenn Morgan on Polyurethane 2007 – Supported2010 by 2 High Density (12- ????? 15 pcf) Polyurethane Saddles – Ribbed design Cryostat at DZero MicroBooNE ArgoNeuT (also LArIAT & 35T) DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 4 Outline • Reminder of how a TPC works • Why argon? • Design and construction efforts • Frame (+ Cathode & Anode readout) • PMTs • Cryostat & Cryosystem • Status and outlook DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 5 A Time-Projection Chamber Works by... Anode Wire Planes U V Y PMT DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar Anode Wire Planes U V Y PMT DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y PMT t0 DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y • Electrons drift to the anode (Ar+ ions to the cathode) PMT t0 DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y • Electrons drift to the anode (Ar+ ions to the cathode) PMT t0 DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y • Electrons drift to the anode (Ar+ ions to the cathode) • Moving electrons induce currents on wires t0 DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y • Electrons drift to the anode (Ar+ ions to the cathode) • Moving electrons induce currents on wires t0 DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 A Time-Projection Chamber Works by... • Energy loss by charged particles → Ionization & excitation of Ar + Anode Wire Planes • Prompt light emission by Ar2* starts clock U V Y V • Electrons drift to the anode (Ar+ ions to the cathode) • Moving electrons induce currents on wires Y • Tracks are reconstructed from wire signals: • Two dimensions from wires t0 • Drift distance is found from knowing t0 & vd → Time projection! DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 6 MicroBooNE is a LAr TPC — Why LAr? • We need to drift electrons from ionization to sense wires → closed shell • Scintillation light gives us t0 • Need good dielectric properties for HV stability (needed for E field) • Noble elements are a good choice for this: MIP DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 7 MicroBooNE is a LAr TPC — Why LAr? • We need to drift electrons from ionization to sense wires → closed shell • Scintillation light gives us t0 • Need good dielectric properties for HV stability (needed for E field) • Noble elements are a good choice for this: MIP From M. Soderberg From DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 7 MicroBooNE is a LAr TPC — Why LAr? • We need to drift electrons from ionization to sense wires → closed shell • Scintillation light gives us t0 • Need good dielectric properties for HV stability (needed for E field) • Noble elements are a good choice for this: Dense MIP From M. Soderberg From DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 7 MicroBooNE is a LAr TPC — Why LAr? • We need to drift electrons from ionization to sense wires → closed shell • Scintillation light gives us t0 • Need good dielectric properties for HV stability (needed for E field) • Noble elements are a good choice for this: Can be cooled by LN2 MIP From M. Soderberg From DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 7 MicroBooNE is a LAr TPC — Why LAr? • We need to drift electrons from ionization to sense wires → closed shell • Scintillation light gives us t0 • Need good dielectric properties for HV stability (needed for E field) • Noble elements are a good choice for this: ~$10/L ~$2/L ~$3000/L ~$500/L ~$700/L MIP From M. Soderberg From DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 7 Design and Construction: TPC Frame DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 8 Design and Construction: TPC Frame • The TPC frame is a box 2.33 m x 2.56 m x 10.37 m (height, drift width, length) DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 8 Design and Construction: TPC Frame • The TPC frame is a box 2.33 m x 2.56 m x 10.37 m (height, drift width, length) • ~86 T active volume -- Largest LArTPC in America From Wikipedia DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 8 Design and Construction: TPC Frame • The TPC frame is a box 2.33 m x 2.56 m x 10.37 m (height, drift width, length) • ~86 T active volume -- Largest LArTPC in America • We need pure Ar so we use tested materials in the construction • The electric field cage is made from stainless steel tubes • Held parallel by G10 braces From Wikipedia DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 8 Design and Construction: TPC Frame • The TPC frame is a box 2.33 m x 2.56 m x 10.37 m (height, drift width, length) • ~86 T active volume -- Largest LArTPC in America • We need pure Ar so we use tested materials in the construction • The electric field cage is made from stainless steel tubes • Held parallel by G10 braces • We then step down the voltage between each tube to create a uniform electric field From Wikipedia DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 8 Cathode Plane 2.56 m Drift DPF: MicroBooNE TPC S. Lockwitz August 15, 2013 9 Cathode Plane • The cathode plane is made of nine stainless steel sheets: 2.56 m Drift DPF: MicroBooNE TPC S.
Load more

Recommended publications
  • Carlos Argüelles –
    H (+1) 608 622 5009 Carlos Argüelles B [email protected] Education 2012–2015 University of Wisconsin at Madison, PhD. in Physics. 2009–2012 Pontificia Universidad Católica del Perú, M. Sc. in Physics. 2004–2008 Pontificia Universidad Católica del Perú, Ba. Sc. in Physics. Professional Experience Jul. 2020 – Assistant Professor, Harvard University. Ongoing Department of Physics, Faculty of Arts and Sciences Sep. 2015 – Postdoctoral Research Associate, Massachusetts Institute of Technology. Jul. 2020 Researcher in Janet Conrad’s group. Jul. 2012 – Research Assistant, University of Wisconsin - Madison. Aug. 2015 Research assistant under the supervision of Francis Halzen. Mar. 2010 – Research Assistant, Pontificia Universidad Católica del Perú. Jul. 2012 Research assistant under the supervision of Alberto Gago. Mar. 2010 – Teacher, Colegio Santa Margarita. Dec. 2010 High school physics teacher. Mar. 2007 – Teaching Assistant, Pontificia Universidad Católica del Perú. Dec. 2011 Teaching assistant in undergraduate courses. Awards and Fellowships 2020 IceCube Collaboration Impact Award for “for key contributions in the development of a suite software tools used broadly in IceCube analyses, and his leading efforts in the advancement of diversity, equity and inclusion within the collaboration.” 2017 American Physical Society Division of Astroparticle Physics thesis award finalist. 2015-2020 Wisconsin IceCube Particle Astrophysics Center (WIPAC) Honorary Fellow. 2011 Fermilab Theory Group Latin American Fellow. 2007-2008 Scholarships to spend a summer semesters at Instituto de Matemática Pura e Aplicada (IMPA). 2006 Scholarships for outstanding performance in physics to continue his undergraduate and graduate studies in physics at Pontificia Universidad Católica del Perú. Collaboration Leadership, Community Involvement, and Outreach Oct. 2018 – Beyond the Standard Model Working Group Technical Leader, IceCube Collaboration.
    [Show full text]
  • Viewpoint Rethinking the Neutrino
    Physics 5, 47 (2012) Viewpoint Rethinking the Neutrino Janet Conrad Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139, USA Published April 23, 2012 The Daya Bay Collaboration in China has discovered an unexpectedly large neutrino oscillation. Subject Areas: Particles and Fields A Viewpoint on: Observation of Electron-Antineutrino Disappearance at Daya Bay F. P. An et al. Phys. Rev. Lett. 108, 171803 (2012) – Published April 23, 2012 To some, this may be the year of the dragon, but in lation probability, and the squared mass splitting, Dm2, neutrino physics, this is the year of θ13. Only one year which affects the wavelength of the oscillation. It also de- ago, this supposedly “tiny” mixing angle, which describes pends on two experimental parameters: L, the distance how neutrinos oscillate from one mass state to another, the neutrinos have traveled from source to detector, and was undetected, but the last twelve months have seen a E, the energy of the neutrino. While Eq. (1) is a simpli- flurry of results from experiments in Asia and Europe, fied two-neutrino picture, expanding to the three known culminating in the result from the Daya Bay Collabora- flavors, νe, νµ, and ντ , it follows a similar line of thought; tion, now being reported in Physical Review Letters, that in this case the two-dimensional rotation matrix with one shows that θ13 is not small after all [1]. A not-so-tiny angle, θ, becomes a three-dimensional matrix with three mixing angle forces us to rethink theory, calling for new Euler angles: θ12, θ23, and θ13.
    [Show full text]
  • DPF Newsletter - August 1999
    DPF Newsletter - August 1999 In This Issue... DPF Elections News from DOE, HEPAP It is time once again for a DPF election. This year we will elect a Vice-Chair, a Divisional Councillor, and DPF Congressional two regular members of the Executive Committee. The Reception Vice-Chair will enter our four-person Chair line (see below) and become Chair in 2002. The Divisional 1999-2000 DPF Election Councillor is one of two who represent DPF at Information meetings of the APS council and act as liaisons to the APS. The two Executive Committee members will join four Executive Committee members remaining on the DPF Bylaws changes committee. The current members of the DPF Executive Approved - Electronic Committee and the final years of their terms are voting to begin Chair: Howard Gordon (1999). Chair-Elect: Eugene Beier (1999). The proposed changes to the Vice-Chair: Chris Quigg (1999). DPF bylaws were approved Past Chair: Howard Georgi (1999). by DPF membership in an Secretary-Treasurer: Catherine Newman- election that concluded in Holmes (2000). June, 1999. The primary Division Councillor: Robert Cahn (1999), reason for changing our Sally Dawson (2003). bylaws was to allow Executive Committee Members: Vernon electronic balloting in our Barger (2001), Pat Burchat (1999), Glennys annual elections. We will try Farrar (2001), Nicholas Hadley (2000), Kay this out for the upcoming Kinoshita (1999), Donna Naples (2000). DPF election described in this newsletter. The current The nominees for Vice-Chair are Robert Cahn plan is to distribute ballots (LBNL) and Stanley Wojcicki (Stanford by e-mail to those DPF University). Peter Meyers (Princeton members with e-mail University) and Chiara Nappi (Institute for addresses.
    [Show full text]
  • Highlights Scientific Fraud-Lessons Learned APS Members Choose Cohen As New Vice President in 2002 Election Topical Conference E
    November 2002 NEWS Volume 11, No. 11 A Publication of The American Physical Society http://www.aps.org/apsnews APS Members Choose Cohen as New Newly Elected Vice President in 2002 Election APS Officials In the 2002 general election, Smoliar of Lightwave Electronics Cohen’s current and past APS members have chosen Marvin were elected as general councillors. research work covers a broad spec- Cohen, a professor at the Univer- Cohen professed himself trum of subjects in theoretical sity of California, Berkeley, and “delighted” to be elected as APS condensed matter physics. He is senior scientist at the Lawrence vice president. He was born in best known for his work with Berkeley National Laboratory, as Montreal and moved to San Fran- pseudopotentials with applications the next APS vice president in the cisco when he was 12 years old. to electronic, optical, and struc- GENERAL 2002 general election. He will He was an undergraduate at Ber- tural properties of materials, VICE PRESIDENT COUNCILLOR assume office on January 1, 2003, keley and completed his PhD at superconductivity, semiconductor Marvin Cohen becoming president elect in 2004 the University of Chicago in physics, and nanoscience. Cohen Janet Conrad and APS president in 2005. The 1964. After a one year is a past recipient of the APS Oliver APS president for 2003 will be postdoctoral position with the E. Buckley Prize and the APS Julius Myriam Sarachik (City College of Theory Group at Bell Laborato- Edgar Lilienfeld Prize. In 2002 New York). ries, he joined the Berkeley Cohen received the National Medal In other election results, John physics faculty.
    [Show full text]
  • Sterile Neutrino Searches in Miniboone and Microboone by Christina M
    Sterile Neutrino Searches in MiniBooNE and MicroBooNE by Christina M. Ignarra Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Physics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 2014 c Massachusetts Institute of Technology 2014. All rights reserved. Signature of Author . Department of Physics August 29, 2014 Certified by. Janet M. Conrad Professor of Physics Thesis Supervisor Accepted by . Krishna Rajagopal Associate Department Head for Education Sterile Neutrino Searches in MiniBooNE and MicroBooNE by Christina M. Ignarra Submitted to the Department of Physics on August 29, 2014, in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Physics Abstract Tension among recent short baseline neutrino experiments has pointed toward the possible need for the addition of one or more sterile (non-interacting) neutrino states into the existing neutrino oscillation framework. This thesis first presents the moti- vation for sterile neutrino models by describing the short-baseline anomalies that can be addressed with them. This is followed by a discussion of the phenomenology of these models. The MiniBooNE experiment and results are then described in detail, particularly the most recent antineutrino analysis. This will be followed by a discus- sion of global fits to world data, including the anomalous data sets. Lastly, future experiments will be addressed, especially focusing on the MicroBooNE experiment and light collection studies. In particular, understanding the degradation source of TPB, designing the TPB-coated plates for MicroBooNE and developing lightguide collection systems will be discussed. We find an excess of events in the MiniBooNE antineutrino mode results consistent with the LSND anomaly, but one that has a different energy dependence than the low- energy excess reported in neutrino mode.
    [Show full text]
  • A Study of Exotic ¯Νe → ¯Ν/E Oscillations in Double Chooz
    A Study of Exotic ν¯e ν¯ ! =e Oscillations in Double Chooz Javier M. G. Duarte Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Bachelor of Science MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2010 c 2010 Javier M. G. Duarte All rights reserved A Study of Exoticν ¯e ν¯e Oscillations in Double Chooz ! = by Javier M. G. Duarte Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Bachelor of Science at the Massachusetts Institute of Technology June 2010 c 2010 Javier M. G. Duarte All rights reserved The author hereby grants to MIT permission to reproduce and distribute publicly paper and electronic copies of this thesis document in whole or in part. Signature of Author Department of Physics May 7, 2010 Certified by Professor Janet M. Conrad Thesis Supervisor, Department of Physics Accepted by Professor David E. Pritchard Senior Thesis Coordinator, Department of Physics A Study of Exotic ν¯ ν¯ Oscillations in Double Chooz e ! =e by Javier M. G. Duarte Submitted to the Department of Physics on May 7, 2010, in partial fulfillment of the requirements for the degree of Bachelor of Science Abstract In this thesis, we estimate the sensitivity of Double Chooz, a reactorν ¯e ν¯e experi- ment, to detect \early" neutrino oscillations based on a three-active plus! one-sterile, or (3 + 1), neutrino mixing model by implementing a least-squares fit to the simu- lated electron antineutrino reactor spectrum1. By comparing the expected spectra from the null hypothesis and the (3 + 1) oscillation hypothesis at the Double Chooz near detector L = 200 m, we expect a modest sterile neutrino discovery potential, limited by the 2% reactor flux uncertainty.
    [Show full text]
  • Harvard University Department of Physics Newsletter
    Harvard University Department of Physics Newsletter FALL/WINTER 2018 women in physics at harvard and beyond Conversations with the Department’s PhDs Harvard Physics Faculty: then (1980, top) and now (September 25, 2018, photo by Paul Horowitz). For names of faculty members on both photographs, please see our website: https://www.physics.harvard.edu/about. CONTENTS Letter from the Chair ........................................................................................................... 2 ON THE COVER: PHYSICS DEPARTMENT HIGHLIGHTS Clockwise from top left: Lisa Randall (photo by Eduard Pastor), Retirements.. ........................................................................................................................ 4 Elizabeth West, Alyssa Goodman (photo by Kris Snibbe, Harvard New Faculty .......................................................................................................................... 5 Staff Photographer), Christie Chiu, In Memoriam ........................................................................................................................ 6 Elizabeth Simmons (Creative Commons Attribution license), Books by Faculty.................................................................................................................. 8 Janet Conrad (photo by Kayana Faculty Prizes, Awards, and Acknowledgments ............................................................... 9 Szymczak), and Emily Russell. Middle row: Ann Nelson and COVER STORY Sally Dawson. Women in Physics at Harvard and
    [Show full text]
  • Viewpoint: Rethinking the Neutrino
    Viewpoint: Rethinking the Neutrino The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Conrad, Janet. “Rethinking the Neutrino.” Physics 5, 47 (2012). Copyright 2012 American Physical Society As Published http://dx.doi.org/10.1103/Physics.5.47 Publisher American Institute of Physics (AIP) Version Final published version Citable link http://hdl.handle.net/1721.1/77627 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Physics 5, 47 (2012) Viewpoint Rethinking the Neutrino Janet Conrad Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139, USA Published April 23, 2012 The Daya Bay Collaboration in China has discovered an unexpectedly large neutrino oscillation. Subject Areas: Particles and Fields A Viewpoint on: Observation of Electron-Antineutrino Disappearance at Daya Bay F. P. An et al. Phys. Rev. Lett. 108, 171803 (2012) – Published April 23, 2012 To some, this may be the year of the dragon, but in lation probability, and the squared mass splitting, Dm2, neutrino physics, this is the year of θ13. Only one year which affects the wavelength of the oscillation. It also de- ago, this supposedly “tiny” mixing angle, which describes pends on two experimental parameters: L, the distance how neutrinos oscillate from one mass state to another, the neutrinos have traveled from source to detector, and was undetected, but the last twelve months have seen a E, the energy of the neutrino.
    [Show full text]
  • The Physics Behind the Cosmicwatch Desktop Muon Detectors by Spencer Nicholas Gaelan Axani
    The Physics Behind the CosmicWatch Desktop Muon Detectors by Spencer Nicholas Gaelan Axani Power Engineering Technologies Dip, Southern Alberta Institute of Technology (2008) B.Sc. (Hons), University of Alberta (2014) Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Master of Science in Physics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY February 2019 © Massachusetts Institute of Technology 2019. All rights reserved. Author......................................................................... Department of Physics February 26th, 2019 Certified by. Janet M. Conrad Professor of Physics, MIT Thesis Supervisor arXiv:1908.00146v1 [physics.ins-det] 31 Jul 2019 Certified by. Scott A. Hughes Professor of Physics, MIT Thesis Supervisor Accepted by.................................................................... Nergis Mavalvala Associate Department Head of Physics, MIT 2 The Physics Behind the CosmicWatch Desktop Muon Detectors by Spencer Nicholas Gaelan Axani Submitted to the Department of Physics on February 26th, 2019, in partial fulfillment of the requirements for the degree of Master of Science in Physics Abstract The CosmicWatch Desktop Muon Detector is a Massachusetts Institute of Technology (MIT) and Polish National Centre for Nuclear Research (NCBJ) based undergraduate-level physics project that incorporates various aspects of electronics-shop technical development. The de- tector was designed to be low-power and extremely portable, which opens up a wide range of physics for students to explore. This document describes the physics behind the Desktop Muon Detectors and explores possible measurements that can be made with the detectors. In particu- lar, we explore various physical phenomena associated with the geomagnetic field, atmospheric conditions, cosmic ray shower composition, attenuation of particles in matter, radioactivity, and statistical properties of Poisson processes.
    [Show full text]
  • Neutrino Experiments: Present, Plans, and Ν Ideas
    Neutrino Experiments: Present, Plans, and ν Ideas Janet Conrad, Columbia University Pheno 2008 We have a fully self-consistent model for how neutrinos behave: They interact via only the weak interaction. They have mass They mix … and therefore they oscillate This model is predictive! Allowed region for solar neutrino oscillation measurements, if this is due to νe → νother then νe → νother should be observable with the same wavelength fit by Gonzalez-Garcia This model is predictive! Allowed region for Allowed region for the solar neutrino oscillation Kamland reactor measurements, νe → νother Experiment! fits by Gonzalez-Garcia The result from the Kamland reactor experiment also shows the L/E dependence one expects from oscillations! 2 2 2 POsc = sin 2θ sin (1.27Δm L / E) arXiv:0801.4589 This is an amazing place to be, considering where we were only 10 years ago. “neutrinos don’t have mass, the SM says so!” “But if they did have mass, then the natural scale is Δm2 ~ 10 – 100 eV2 In order to explain dark matter” “And the oscillation mixing angles must be small because it must be like the quark mixing angles” Happy 10th Anniversary Super-K! What we have learned since about oscillations... Ruled out by MiniBooNE in ν-mode Confirmed by K2K and Minos accelerator neutrino exps Confirmed by SNO and by Kamland reactor neutrino exp Our Model BUT mysteries remain…. These center on ν3 Question 1: Is there any νe content? or What’s the value of θ13? The Frenzy to Find θ13 is ON!!!! = beam based, = reactor based, νµ→ νe νe disappearance Double Chooz MINOS RENO NOvA OPERA T2K Daya Bay Angra The value of θ13 …may indicate new physics if it is small.
    [Show full text]
  • L. Gladstone, and C
    L. GLADSTONE CURRICULUM VITAE CONTACT INFORMATION e-mail: [email protected] Wisconsin IceCube Particle Astrophysics Center web: http://icecube.wisc.edu/ gladstone 222 W Washington Ave, Suite 500 » Office: +1 (608) 890-0526 Madison, WI 53703, USA EDUCATION Ph. D. (Physics) expected 2014 University of Wisconsin-Madison Thesis: A Measurement of the Neutrino Mixing Angle θ23 using the IceCube DeepCore Detector Adviser: Albrecht Karle M. S. (Physics) 2010 University of Wisconsin-Madison Adviser: Albrecht Karle B. A. (Physics, concentration Mathematics) 2007 Columbia College, Columbia University Thesis: Understanding neutrino oscillations with the MiniBooNE experiment: photomultiplier tube testing and delta radiative decays Adviser: Janet Conrad PROFESSIONAL APPOINTMENTS Graduate Research Assistant University of Wisconsin-Madison, Madison, Wisconsin 2010 to present Graduate Fellow University of Wisconsin-Madison, Madison, Wisconsin 2007-2010 Undergraduate Research Assistant Columbia University, New York, NY / Fermilab, Batavia, IL 2004-2007 RESEARCH IceCube Neutrino Observatory EXPERIENCE - Developed an event selection for oscillation analysis that excluded the background of down- going cosmic ray muons while preserving a sample of atmospheric neutrinos with energies of order 10 GeV , from the year of data with the 79-string detector setup. - Wrote software for Feldman-Cousins error contours, useful for any oscillation analysis, diffuse neutrino spectrum analysis, or unbinned point source analysis. - Search for the shadow of the Moon in down-going cosmic ray muons in the 22- and 40-string detector setups: found the first signal stronger than 3σ in IceCube from the Moon. - Tested the main detector components, Digital Optical Modules (DOMs), during production, including testing on-site during one South Polar season.
    [Show full text]
  • Carlos Argüelles –
    H (+1) 608 622 5009 Carlos Argüelles B [email protected] Education 2012–2015 University of Wisconsin at Madison, PhD. in Physics. 2009–2012 Pontificia Universidad Católica del Perú, M. Sc. in Physics. 2004–2008 Pontificia Universidad Católica del Perú, Ba. Sc. in Physics. Professional Experience Jul. 2020 – Assistant Professor, Harvard University. Ongoing Department of Physics, Faculty of Arts and Sciences Sep. 2015 – Postdoctoral Research Associate, Massachusetts Institute of Technology. Jul. 2020 Researcher in Janet Conrad’s group. Jul. 2012 – Research Assistant, University of Wisconsin - Madison. Aug. 2015 Research assistant under the supervision of Francis Halzen. Mar. 2010 – Research Assistant, Pontificia Universidad Católica del Perú. Jul. 2012 Research assistant under the supervision of Alberto Gago. Mar. 2010 – Teacher, Colegio Santa Margarita. Dec. 2010 High school physics teacher. Mar. 2007 – Teaching Assistant, Pontificia Universidad Católica del Perú. Dec. 2011 Teaching assistant in undergraduate courses. Awards and Fellowships 2020 IceCube Collaboration Impact Award for “for key contributions in the development of a suite software tools used broadly in IceCube analyses, and his leading efforts in the advancement of diversity, equity and inclusion within the collaboration.” 2017 American Physical Society Division of Astroparticle Physics thesis award finalist. 2015-2020 Wisconsin IceCube Particle Astrophysics Center (WIPAC) Honorary Fellow. 2011 Fermilab Theory Group Latin American Fellow. 2007-2008 Scholarships to spend a summer semesters at Instituto de Matemática Pura e Aplicada (IMPA). 2006 Scholarships for outstanding performance in physics to continue his undergraduate and graduate studies in physics at Pontificia Universidad Católica del Perú. Collaboration Leadership, Community Involvement, and Outreach Oct. 2018 – Beyond the Standard Model Working Group Technical Leader, IceCube Collaboration.
    [Show full text]