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Physique Nucléaire Et De L'instrumentation Associée Introduction
FR0108546 # DEA-DAPNIA-RA-1997-98 A il. ..33/04 -DSM Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée Introduction Motivés par la curiosité pour les connaissances fondamentales et soutenus par des investissements impor- tants, les chercheurs du vingtième siècle ont fait des découvertes scientifiques considérables, sources de retombées économiques fructueuses. Une recherche ambitieuse doit se poursuivre. Organisé pour déve- lopper les grands programmes pour le nucléaire et par le nucléaire, le CEA est bien armé pour concevoir et mettre au point les instruments destinés à explorer, en coopération avec les autres organismes de recherche, les confins de l'infiniment petit et ceux de l'infinimenf grand. La recherche fondamentale évolue et par essence ne doit pas avoir de frontières. Le Département d'astrophysique, de physique des particules, de physique nucléaire et de l'instrumentation associée (Dapnia) a été créé pour abolir les cloisons entre la physique nucléaire, la physique des particules et l'as- trophysique, tout en resserrant les liens entre physiciens, ingénieurs et techniciens au sein de la Direction des sciences de la matière (DSM). Le Dapnia est unique par sa pluridisciplinarité. Ce regroupement a permis de lancer des expériences se situant aux frontières de ces disciplines tout en favorisant de nou- velles orientations et les choix vers les programmes les plus prometteurs. Tout en bénéficiant de l'expertise d'autres départements du CEA, la recherche au Dapnia se fait princi- palement au sein de collaborations nationales et internationales. Les équipes du Dapnia, de I'IN2P3 (Institut national de physique nucléaire et de physique des particules) et de l'Insu (Institut national des sciences de l'Univers) se retrouvent dans de nombreuses grandes collaborations internationales, chacun apportant ses compétences spécifiques afin de renforcer l'impact de nos contributions. -
ATLAS E-M Calorimeter Resolution and Neural Network Based Particle Classification
ATLAS E-M Calorimeter Resolution and Neural Network Based Particle Classification Summer 2004 REU Igor Vaynman Undergraduate California Institute of Technology John Parsons Kamal Benslama Mentors Columbia University August 16, 2004 Abstract The ATLAS detector is being built in CERN at the LHC. It is a gen- eral purpose detector that will be used for a variety of experiments, such as searching for the Higgs Boson. The electromagnetic calorimeter is a component of ATLAS responsible for measuring the energy deposited by e+, e−, and γ. This paper presents a study of the resolution of the E-M calorimeter using data simulated by GEANT 4. Also included is a study in the use of Neural Networks to classify particles, specifically e−/π±, using data from the E-M calorimeter. 1 Igor Vaynman Summer 2004 REU Report 1 Introduction 1.1 The ATLAS Detector The Large Hadron Collider currently being built in CERN will be able to collide protons at 14 TeV, and the ATLAS detector is being built to detect the result of such high energy collisions. Potentially, the detector will be able to find evidence for the Higgs Boson. The detector is built in multiple layers in order to detect all possible flavors of particles and thus accurately reconstruct the original event. The innermost layer measures the momentum of charged particles by applying a magnetic field and calculating the resulting curvature of the tracks using pixel detectors. Next is the electromagnetic calorimeter, which measures the energy of electrons, photons, and positrons, followed by the hadronic calorimeter which obtains the energy of protons, pions, and other heavier particles. -
2010 IPP Submission to the Canadian
IPP Submission to the NSERC Subatomic Physics Long Range Planning Committee September 30, 2010 IPP LRP Brief Preparatory Group∗ Executive Summary: The Canadian particle physics community has continued to grow in numbers and scientific output over the last five years and is making substantial, internationally recognised, contributions in several areas. We review significant accomplishments of Canadian researchers, and offer a vision of the priorities for the community for the next five years. We identify four “essential” projects for the particle physics commu- nity in Canada over the next five years: ATLAS, DEAP, SNO+, and T2K. We identify four additional projects that have the potential to achieve essential status within the Canadian community over this time period: EXO, PICASSO, SuperB, and SuperCDMS. A long-term solution for funding SNOLAB oper- ations outside the NSERC SAP envelope is identified as the most critical structural issue for Canadian particle physics. We draw attention to the failure of the SAP envelope to grow in proportion to the growth of the community, funding limitations on TRIUMF’s ability to support new particle physics initiatives, and exploring a formal relationship between Canada and CERN. The IPP welcomes improved coordina- tion between the different funding mechanisms available to particle physics researchers in Canada. This would be an important first step to addressing many of the structural issues discussed here. ∗Including the current members of IPP Council: J. Farine (Laurentian), H. Logan (Carleton), R. Moore (Alberta), S. Oser (UBC), S. Robertson (McGill/IPP), R. Sobie (Victoria/IPP), W.Trischuk-Chair (Toronto); with the addition of N. Smith (SNO- LAB). -
Faculty of Science Annual Report
Faculty of Science Annual Report January 1, 2009 – December 31, 2009 Faculty of Science University of Regina Regina, Saskatchewan S4S 0A2 www.uregina.ca/science/ Dean’s Comments raditionally our Annual Report begins with the Faculty’s Strategic Plan, Creating Our Future: 2005-2010. This year, Thowever, we begin with Dr. Katherine Bergman’s Summary Report, Toward Achieving Our Objectives. As Dean of Science during the creation and implementation of the Faculty’s current strategic plan, Dr. Bergman is eminently qualified to provide this assessment. As 2010 comes to a close, the Faculty will finalize its new strategic plan in keeping with mâmawohkamâtowin: Our Work, Our People, Our Communities, the University’s Strategic Plan for 2009-2014. 2009 was an exciting year at the University. There were budget and enrolment issues of great concern, but also visions of the coming years as we identified the priorities and actions needed in the first year of mâmawohkamâtowin. Science had an excellent year for student enrolment with credit hours up substantially. And, the long anticipated move began, with the opening of lab and office space for Science in the Research and Innovation Centre. “It remains for the Faculty to continue formulating goals and objectives and searching out means to further our reputation for excellence in both teaching and research…Our Faculty faces problems associated with static or declining enrolment, and the lack of resources to undertake some of the many projects we would like to deal with. Nevertheless, progress is being made in many respects.” These comments are a very accurate assessment of our current state. -
ATLAS Long Range Plan 2005
-1 0 The ATLAS Experiment at the CERN Large Hadron Collider A Ten Year Plan for TeV Physics B. Caron, D.M. Gingrich, R. Moore, J. Lu, J. Pinfold, R. Soluk, J. Soukup University of Alberta D. Asner, M. Khakzad, G. Oakham, M. Vincter, Z.Y. Yang Carleton University D. Axen University of British Columbia S. Robertson, B. Vachon, A. Warburton McGill University G. Azuelos, G. Couture, C. Leroy, J.-P. Martin, R. Mehdiyev, N. Starinsky, P.-A. Delsart Universit¶ede Montr¶eal D.C. Bailey, P. Gourbonov, L. Groer, P. Krieger, C. Le Maner, R. Mazini, R.S. Orr, P. Savard, P. Sinervo, M. Cadabaschi, R. Teuscher, W. Trischuk University of Toronto D. O'Neil, M. Vetterli Simon Fraser University M. Losty, C.J. Oram, R. Ta¯rout, I. Trigger TRIUMF A. Astbury, A. Agarwal, M. Fincke-Keeler, R.K. Keeler, R.V. Kowalewski, R. Langsta®, M. Lefebvre, P. Po®enberger, R.A. McPherson, R. Seuster, R. Sobie, K. Voss University of Victoria S. Bhadra, W. Taylor York University November 20, 2005 1 2 Contents A. Introduction 3 B. ATLAS and Current Issues in Particle Physics 3 C. Comparison with Other Experimental Facilities 4 D. The ATLAS Experiment 5 E. Canadian Participation in the ATLAS Experiment 7 (i) ATLAS Canada Construction Projects . 7 (ii) The LHC . 8 (iii) ATLAS Commissioning . 9 (iv) Plans for ATLAS Physics . 10 (v) Future ATLAS Upgrades . 12 (vi) Role of Canadian Group in ATLAS Management . 13 (vii) Operating Funds . 14 (viii) Personnel . 15 (ix) New Projects . 20 (a) The High Level Trigger . 20 (b) ATLAS Beam Conditions Monitor . -
Faculty of Science
FACULTY OF SCIENCE A NNUAL R EPORT January 1, 2006 – December 31, 2006 (www.uregina.ca/science/) Faculty of Science University of Regina Regina, Saskatchewan, Canada S4S 0A2 This document is available on our website: http://www.uregina.ca/science/ Format and Design: Marlene Miller and Catherine Kossatz Dean's Comments The Faculty of Science Strategic Plan Creating Statistics hosted Math Camp 2006 that attracted Our Future: 2005 - 2010 serves as the framework for participants from across the Province. Math Central is a guiding decision-making and resource allocation in community based interactive math website, which the Faculty.An executive summary of this document attracted significant financial support ($150,000 over follows. The Faculty faces the challenge of retaining 5 years) from Imperial Oil Foundation. Many of our new colleagues, who are shaping the research faculty members and students have been invited to directions and programs of the Faculty, in new and elementary and high school classrooms. Others have innovative ways, promoting both independent and given demonstrations and presentations to various integrated collaborative research and teaching community organizations or sit as board members or programs in the Faculty and the University, volunteers on a number of community based Provincially, Nationally and Internationally. Our organizations. The Faculty of Science is a continuing faculty members have attracted significant external supporter of the Saskatchewan Science Centre, and research and infrastructure funding through -
The ATLAS High Level Trigger A. Introduction
VACHON, B.M.C. PIN 207385 1 The ATLAS High Level Trigger A. Introduction The Large Hadron Collider (LHC) at CERN will soon become the premier project in high-energy particle physics. The data to be recorded by the ATLAS experiment starting in 2008 is expected to revolutionize our understanding of the smallest constituents of nature and their interactions. Four decades of research have led to the development of the Standard Model of Particle Physics, a theory that has proved extremely successful at describing current experimental measurements over a wide range of energies. We have, however, not yet experimentally observed the existence of the predicted Higgs Boson, which is responsible for the breaking of the symmetry of the electroweak interaction into the more familiar electromagnetic and weak nuclear forces by generating mass for the elementary particles. Even with the discovery of the Higgs boson, the Standard Model seems to provide an incomplete description of nature at energy scales near 1 TeV. The ATLAS experiment is designed to discover the Higgs boson for any masses allowed within current experimental and theoretical constraints, as well as explore physics at energy scales where theories beyond the Standard Model strongly favour observable new physics. Major construction of ATLAS detector components is finished and the installation of these components in the ATLAS experimental area is nearly complete. The current emphasis of the ongoing work is in the areas of integration and commissioning of the detector and data acquisition systems. In addition to offline computing and physics studies, Canadians are playing leading roles in two distinct areas of the ATLAS experiment: the liquid argon calorimeter system and the High Level Trigger system. -
Observation of the Standard Model Higgs Boson and Search for an Additional Scalar in the `+`−`+`− final State with the ATLAS Detector
Observation of the Standard Model Higgs boson and search for an additional scalar in the `+`−`+`− final state with the ATLAS detector by Xiangyang Ju A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Physics) at the University of Wisconsin{Madison 2018 Date of final oral examination: 03.15, 2018 CERN-THESIS-2018-019 15/03/2018 The dissertation is approved by the following members of the Final Oral Committee: Lisa L Everett, Professor, Physics Marshall F Onellion, Professor, Physics (material science) Kimberly J. Palladino, Assistant Professor, Physics Wesley H Smith, Professor, Physics Sau Lau Wu, Professor, Physics c Copyright by Xiangyang Ju 2018 All Rights Reserved i To my family ii Acknowledgments First and foremost, I sincerely give my deepest gratitude to my advisor, Prof. Sau Lan Wu, for her patience, dedication and immense knowledge. It has been a great honor to join her prestigious group in particle physics. I am deeply grateful for all her contributions of time, ideas and funding that make my particle physics endeavor successful. Besides my advisor, I would like to thank the rest of my thesis committee: Prof. Lisa Everett, Prof. Marshall Onellion, Prof. Kimberly Palladino and Prof. Wesle Smith for their insightful comments and encouragement, but also for the hard questions which incented me to widen my research from various perspectives. I give my sincere deep thanks to Dr. Kamal Benslama, for educating me with the fundamental knowledge of particle physics, which, in turn, enabled me to start physics researches. I enjoyed the days and nights we spent in searching for the first candidates of W , Z boson and top-pairs using the ATLAS detector. -
Highly Cited Researchers (H>100) According to Their Google Scholar
Highly Cited Researchers (h>100) according to their Google Scholar Citations public profiles H- RANK NAME ORGANIZATION CITATIONS INDEX 1 Sigmund Freud University of Vienna 269 488396 2 Graham Colditz Washington University in St Louis 264 256415 3 Eugene Braunwald Brigham and Women’s Hospital; Harvard Medical School 246 290831 4 Ronald C Kessler Harvard University 245 263006 5 Pierre Bourdieu Centre de Sociologie Européenne; Collège de France 242 528228 7 Solomon H Snyder Johns Hopkins University 240 216313 6 Michel Foucault Collège de France 237 690001 8 Robert Langer Massachusetts Institute of Technology MIT 232 216122 9 Bert Vogelstein Johns Hopkins University 230 315600 10 Eric Lander Broad Institute Harvard MIT 225 294683 11 Michael Karin University of California San Diego 223 210430 12 Gordon Guyatt McMaster University 217 187432 13 Michael Graetzel Ecole Polytechnique Fédérale de Lausanne 216 235390 14 Salim Yusuf McMaster University 214 248236 15 Richard A Flavell Yale University; HHMI 214 171241 16 Frank B Hu Harvard University 206 158298 17 T W Robbins University of Cambridge 206 130965 18 Carlo Croce Ohio State University 203 181398 19 Peter Barnes Imperial College London 202 178101 20 Eric Topol Scripps Research Institute 200 178348 21 A S Fauci National Institutes of Health NIH 200 168338 22 Chris Frith University College London 200 152183 23 Steven A Rosenberg National Cancer Institute NIH 199 164925 24 Kenneth Kinzler Johns Hopkins University 198 206590 25 Matthias Mann # Max Planck Gesellschaft MPG 196 175332 26 Karl Friston