Development Of Pixel Detectors For The Inner Tracker Upgrade Of The Atlas Experiment
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Development Of Pixel Detectors For The Inner Tracker Upgrade Of The Atlas Experiment
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Author : Natascha Savić
language : en
Publisher:
Release Date : 2018
Development Of Pixel Detectors For The Inner Tracker Upgrade Of The Atlas Experiment written by Natascha Savić and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Detectors categories.
Development Of Pixel Detector For Atlas Inner Tracker Itk Upgrade At Hl Lhc And Searching For The Standard Model Higgs Boson Decay Into B Quark Pair With Atlas Experiment
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Author : Tasneem Saleem
language : en
Publisher:
Release Date : 2019
Development Of Pixel Detector For Atlas Inner Tracker Itk Upgrade At Hl Lhc And Searching For The Standard Model Higgs Boson Decay Into B Quark Pair With Atlas Experiment written by Tasneem Saleem and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
ATLAS is one of the two main experiments at LHC with the purpose of investigating the microscopic properties of matter to address the most fundamental questions of particle physics. After the achievements of the first years of running, the potential reach for new discoveries and precise measurements at LHC is being extended by pushing further the energy and luminosity frontiers through three upgrades of the accelerator culminating in the High Luminosity LHC (HL-LHC). To fully profit from the increased luminosity, two main upgrades of the ATLAS inner detector are planned. The first upgrade was already completed at the beginning of 2015 with the insertion of the IBL, a fourth pixel layer located at just 3.2 cm from the beam line. In the second major upgrade, foreseen for 2024, the full inner detector will be replaced by a completely new inner tracker fully made of silicon devices to cope with the high particle density and the harsh radiation environment at the HL-LHC, which during its operational period will deliver 3000 fb-1, almost ten times the integrated luminosity of the full LHC program. This thesis addresses the study of new n+-in-p active edge pixel detectors by developing two novel doping profile analysis methods to study the radiation damage effects on the pixel detectors performance. These methods are the 3D sims imaging method and the TLM Method. TCAD simulation has been used to simulate the doping profiles, the electrical behavior and the radiation damage. Validating the simulation models with data have been done. Moreover, clean-room characterization, as well as testbeam measurement have been performed to test the different detector designs. In the second part of the thesis, I discuss the observation of the standard model Higgs boson bb decay mode using the data collected by ATLAS during the LHC Run2 at center-of-mass energy 13 TeV and an integrated luminosity 79.8 fb−1 of a proton-proton collision. I contributed specifically to the search of the standard model Higgs boson in VH(bb) production mode. In the VH(bb) analysis we don't have any channel that considers the tau leptons in the final state. I have performed a feasibility study to verify the gain of using the taus in the analysis. In addition, for the VH(bb) analysis I have worked on the multi-jet background estimation in the 1-lepton channel using the dijet-mass analysis method.
Search For Higgs Boson Decays To Charm Quarks With The Atlas Experiment And Development Of Novel Silicon Pixel Detectors
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Author : Maria Mironova
language : en
Publisher: Springer Nature
Release Date : 2023-07-20
Search For Higgs Boson Decays To Charm Quarks With The Atlas Experiment And Development Of Novel Silicon Pixel Detectors written by Maria Mironova and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-20 with Science categories.
This book explores the Higgs boson and its interactions with fermions, as well as the detector technologies used to measure it. The Standard Model of Particle Physics has been a groundbreaking theory in our understanding of the fundamental properties of the universe, but it is incomplete, and there are significant hints which require new physics. The discovery of the Higgs boson in 2012 was a substantial confirmation of the Standard Model, but many of its decay modes remain elusive. This book presents the latest search for Higgs boson decays into c-quarks using a proton-proton collision dataset collected by the ATLAS experiment at the Large Hadron Collider (LHC). This decay mode has yet to be observed and requires advanced machine learning algorithms to identify c-quarks in the experiment. The results provide an upper limit on the rate of Higgs boson decays to c-quarks and a direct measurement of the Higgs boson coupling strength to c-quarks. The book also discusses the future of particle physics and the need for significant improvements to the detector to cope with increased radiation damage and higher data rates at the High-Luminosity LHC. It presents the characterization of the ATLAS pixel detector readout chip for the inner detector upgrade (ITk). The chip was subjected to irradiations using X-rays and protons to simulate the radiation environment at the HL-LHC. The tests showed that all readout chip components, including the digital logic and analogue front-end, are sufficiently radiation-tolerant to withstand the expected radiation dose. Finally, this book describes monolithic pixel detectors as a possible technology for future pixel detectors. This book is ideal for individuals interested in exploring particle physics, the Higgs boson, and the development of silicon pixel detectors.
Development Of A New Tracker For The Cms Upgrade Phase 2 And Study Of The Hl Lhc Physics Reach
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Author : Martin Delcourt
language : en
Publisher: Presses universitaires de Louvain
Release Date : 2020-11-26
Development Of A New Tracker For The Cms Upgrade Phase 2 And Study Of The Hl Lhc Physics Reach written by Martin Delcourt and has been published by Presses universitaires de Louvain this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-26 with Science categories.
The standard model of particle physics provides a coherent description of highenergy physics processes and has been hugely successful in providing experimental predictions. Among its long list of achievements, the most significant is arguably that of the discovery of the Higgs boson half a century after being theorised, providing the last cornerstone needed for the standard model to become fully consistent. Despite huge successes, the standard model still suffers from major shortcomings. On the path leading towards a better understanding of particle physics, an in-depth study of the Higgs boson is key. This relentless work of characterising the properties of the Higgs boson is currently being undertaken at the Large Hadron Collider, where high-energy proton collisions are being recorded by dedicated detectors, providing a continuous improvement to the understanding of the standard model. Amid tremendous achievements, some processes, remain too weak to be detected with the current installations. One such measurement is the combined production of two Higgs bosons allowing for a direct handle on the Higgs self-coupling parameter of the standard model. To maximise the physics reach of the collider, it will be subjected to a major upgrade, allowing for a strong increase in luminosity. Such a dramatic change will bring major challenges to the experiments recording these collisions and upgrades are required if they are to maintain their outstanding performance. This thesis explores the upgrade of the CMS silicon strip detector, centred around the in-beam characterisation of detector module prototypes and discusses the physics reach of the upgraded machine, with an emphasis on Higgs boson pair production in the bbWW(l) final state.
Proceedings Of International Conference On Technology And Instrumentation In Particle Physics 2017
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Author : Zhen-An Liu
language : en
Publisher: Springer
Release Date : 2018-08-07
Proceedings Of International Conference On Technology And Instrumentation In Particle Physics 2017 written by Zhen-An Liu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-07 with Technology & Engineering categories.
These two volumes present the proceedings of the International Conference on Technology and Instrumentation in Particle Physics 2017 (TIPP2017), which was held in Beijing, China from 22 to 26 May 2017. Gathering selected articles on the basis of their quality and originality, it highlights the latest developments and research trends in detectors and instrumentation for all branches of particle physics, particle astrophysics and closely related fields. This is the second volume, and focuses on the main themes Astrophysics and space instrumentation, Front-end electronics and fast data transmission, Trigger and data acquisition systems, Machine detectors, Interfaces and beam instrumentation, Backend readout structures and embedded systems, Medical imaging, and Security & other applications. The TIPP2017 is the fourth in a series of international conferences on detectors and instrumentation, held under the auspices of the International Union of Pure and Applied Physics (IUPAP). The event brings together experts from the scientific and industrial communities to discuss their current efforts and plan for the future. The conference’s aim is to provide a stimulating atmosphere for scientists and engineers from around the world.
The Read Out Controller Asic For The Atlas Experiment At Lhc
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Author : Stefan Popa
language : en
Publisher: Springer Nature
Release Date : 2022-12-17
The Read Out Controller Asic For The Atlas Experiment At Lhc written by Stefan Popa and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-17 with Technology & Engineering categories.
This thesis presents the complete chain from specifications to real-life deployment of the Read Out Controller (ROC) ASIC for the ATLAS Experiment at LHC, including the design of the FPGA-based setup used for prototype validation and mass testing of the approximately 6000 chips. Long-lasting experiments like the ATLAS at the LHC undergo regular upgrades to improve their performance over time. One of such upgrades of the ATLAS was the replacement of a fraction of muon detectors in the forward rapidities to provide much-improved reconstruction precision and discrimination from background protons. This new instrumentation (New Small Wheel) is equipped with custom-designed, radiation-hard, on-detector electronics with the Read Out Controller chip being a mission-critical element. The chip acts as a clock and control signals distributor and a concentrator, buffer, filter and real-time processor of detector data packets. The described and deployed FPGA-based test setup emulates the asynchronous chip context and employs optimizations and automatic clock and data synchronization. The chip's tolerance to nuclear radiation was evaluated by recording its operation while controlled ultrafast neutron beams were incident to its silicon die. Predictions for the operating environment are made. A proposed implementation of an FPGA Integrated Logic Analyzer that mitigates the observed limitations and constraints of the existing ones is included.
Astroparticle Particle And Space Physics Detectors And Medical Physics Applications Proceedings Of The 11th Conference On Icatpp 11
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Author : Pier-giorgio Rancoita
language : en
Publisher: World Scientific
Release Date : 2010-04-30
Astroparticle Particle And Space Physics Detectors And Medical Physics Applications Proceedings Of The 11th Conference On Icatpp 11 written by Pier-giorgio Rancoita and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04-30 with Science categories.
The exploration of the subnuclear world is done through increasingly complex experiments covering a wide range of energy and performed in a large variety of environments from particle accelerators, underground detectors to satellites and space laboratory. The achievement of these research programs calls for novel techniques, new materials and instrumentation to be used in detectors, often of large scale. Therefore, fundamental physics is at the forefront of technological advance and also leads to many applications. Among these, medical applications have a particular importance due to health and social benefits they bring to the public.
Astroparticle Particle And Space Physics Detectors And Medical Physics Applications
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Author : Claude Leroy
language : en
Publisher: World Scientific
Release Date : 2010
Astroparticle Particle And Space Physics Detectors And Medical Physics Applications written by Claude Leroy and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Medical categories.
Beam test results with a highly granular Analog Hadron Calorimeter Prototype (AHCAL) / S. Morozov -- Validation of the hadronic calibration of the ATLAS calorimeter with test beam data corresponding to the pseudorapidity range 2.5
Electroweak Physics At The Large Hadron Collider With The Atlas Detector
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Author : Elodie Resseguie
language : en
Publisher: Springer Nature
Release Date : 2020-11-03
Electroweak Physics At The Large Hadron Collider With The Atlas Detector written by Elodie Resseguie and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-03 with Science categories.
This thesis discusses searches for electroweakly produced supersymmetric partners of the gauge and the Higgs bosons (gauginos and higgsinos) decaying to multiple leptons, using pp collisions at sqrt(s) = 13 TeV. The thesis presents an in-depth study of multiple searches, as well as the first 13 TeV cross section measurement for the dominant background in these searches, WZ production. Two searches were performed using 36.1/fb of data: the gaugino search, which makes use of a novel kinematic variable, and the higgsino search, which produced the first higgsino limits at the LHC. A search using 139/fb of data makes use of a new technique developed in this thesis to cross check an excess of data above the background expectation in a search using a Recursive Jigsaw Reconstruction technique. None of the searches showed a significant excess of data, and limits were expanded with respect to previous results. These searches will benefit from the addition of luminosity during HL-LHC; however, the current detector will not be able to withstand the increase in radiation. Electronics for the detector upgrade are tested and irradiated to ensure their performance.
Large Hadron Collider The The Greatest Adventure In Town And Ten Reasons Why It Matters As Illustrated By The Atlas Experiment
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Author : Andrew J Millington
language : en
Publisher: World Scientific
Release Date : 2016-09-14
Large Hadron Collider The The Greatest Adventure In Town And Ten Reasons Why It Matters As Illustrated By The Atlas Experiment written by Andrew J Millington and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-14 with Science categories.
When the discovery of the Higgs Boson at CERN hit the headlines in 2012, the world was stunned by this achievement of modern science. Less well appreciated, however, were the many ways in which this benefited wider society.The Large Hadron Collider — The Greatest Adventure in Town charts a path through the cultural, economic and medical gains of modern particle physics. It illustrates these messages through the ATLAS experiment at CERN, one of the two big experiments which found the Higgs particle. Moving clear of in-depth physics analysis, it draws on the unparalleled curiosity about particle physics aroused by the Higgs discovery, and relates it to developments familiar in the modern world, including the Internet, its successor 'The Grid', and the latest cancer treatments.In this book, advances made from developing the 27 kilometre particle accelerator and its detectors are presented with the benefit of first hand interviews and are extensively illustrated throughout. Interviewees are leading physicists including successive heads of ATLAS, a top historian of science, a highly original economic strategist, a Nobel Prize-winning geneticist and President of the Royal Society in London, and experts in many other fields. These informative and entertaining insights provide both specialists and non-specialists alike with a unique window into the world of modern international research and its often surprising consequences, as exemplified by the ATLAS experiment. The narrative reveals the extent and style of international collaboration necessary to achieve success, and how big companies as well as start-ups enhance their products in the process.