Development Of Radiation Hard Pixel Modules Employing Planar N In P Silicon Sensors With Active Edges For The Atlas Detector At Hl Lhc
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Development Of Radiation Hard Pixel Modules Employing Planar N In P Silicon Sensors With Active Edges For The Atlas Detector At Hl Lhc
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Author :
language : en
Publisher:
Release Date : 2015
Development Of Radiation Hard Pixel Modules Employing Planar N In P Silicon Sensors With Active Edges For The Atlas Detector At Hl Lhc written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Development Of Radiation Hard Pixel Modules Employing Planar N In P Silicon Sensors With Active Edges For The Atlas Detector At Hl Lhc
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Author : Stefano Terzo
language : en
Publisher:
Release Date : 2015
Development Of Radiation Hard Pixel Modules Employing Planar N In P Silicon Sensors With Active Edges For The Atlas Detector At Hl Lhc written by Stefano Terzo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Laboratory And Testbeam Results For Thin And Epitaxial Planar Sensors For Hl Lhc
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Author :
language : en
Publisher:
Release Date : 2015
Laboratory And Testbeam Results For Thin And Epitaxial Planar Sensors For Hl Lhc written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The High-Luminosity LHC (HL-LHC) upgrade of the CMS pixel detector will require the development of novel pixel sensors which can withstand the increase in instantaneous luminosity to L = 5 × 1034 cm-2s-1 and collect ~ 3000fb-1 of data. The innermost layer of the pixel detector will be exposed to doses of about 1016 neq/ cm2. Hence, new pixel sensors with improved radiation hardness need to be investigated. A variety of silicon materials (Float-zone, Magnetic Czochralski and Epitaxially grown silicon), with thicknesses from 50 [mu]m to 320 [mu]m in p-type and n-type substrates have been fabricated using single-sided processing. The effect of reducing the sensor active thickness to improve radiation hardness by using various techniques (deep diffusion, wafer thinning, or growing epitaxial silicon on a handle wafer) has been studied. Furthermore, the results for electrical characterization, charge collection efficiency, and position resolution of various n-on-p pixel sensors with different substrates and different pixel geometries (different bias dot gaps and pixel implant sizes) will be presented.
Development Of Radiation Hard Planar Silicon Tracking Detectors For The Atlas Experiment At The Hl Lhc
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Author : Dean Forshaw
language : en
Publisher:
Release Date : 2014
Development Of Radiation Hard Planar Silicon Tracking Detectors For The Atlas Experiment At The Hl Lhc written by Dean Forshaw and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with 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.
Pixel Sensors With Slim Edges And Small Pitches For The Cms Upgrades For Hl Lhc
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Author :
language : en
Publisher:
Release Date : 2016
Pixel Sensors With Slim Edges And Small Pitches For The Cms Upgrades For Hl Lhc written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Planar n-in-n silicon detectors with small pitches and slim edges are being investigated for the innermost layers of tracking devices for the foreseen upgrades of the LHC. Sensor prototypes compatible with the CMS readout, fabricated by Sintef, were tested in the laboratory and with a 120 GeV/c proton beam at the Fermilab test beam facility before and after irradiation with up to 2x1015 neq/cm2 fluence. Preliminary results of the data analysis are presented.
Upgrade Of The Atlas Experiment Inner Tracker And Related Physics Perspectives Of The Higgs Boson Decay Into Two B Quarks
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Author : Audrey Ducourthial
language : en
Publisher:
Release Date : 2018
Upgrade Of The Atlas Experiment Inner Tracker And Related Physics Perspectives Of The Higgs Boson Decay Into Two B Quarks written by Audrey Ducourthial and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
By 2027, the LHC will enter its high luminosity regime, providing protons protons collisions at an unprecedented rate. The LHC experiments whill have to be upgraded to cope with this higher data rate. The new ATLAS Inner Tracker (ITk) will allow a better identification of b-quarks and interesting physics signature with b-quarks in the final states such as the Higgs trilinear coupling will be reachable. The work performed during this thesis consisted in testing planar pixel sensors for the ITk, as well as optimizing b-tagging algorithms. In parallel, a study on the radiation damage on silicon pixel sensors have been performed. The radiation hardness of silicon sensors plays a determinant role as it allows them to be efficient in the highly radiative environment at LHC. Understanding the impact of radiation in silicon sensors is a major challenge and a radiation damage digitizer which models radiation damage effects in ATLAS Monte Carlo simulations is currently developed by the ATLAS experiment. Three ITk silicon planar pixel sensors productions of LPNHE and FBK have been developed, produced and tested on beam. Sensors from these three productions aim to be part of the ITk and have to demonstrate good performance after being irradiated at high fluences. Several technological designs have been investigated, such as temporary metal biasing option and active edges which maximize the geometrical acceptance of the sensors. The optimization of b-tagging SV1 algorithm (a secondary-vertex based algorithm) will be pre- sented as well as a study on the extrapolation of b-tagging performances at high pT.
Development Of Pixel Module Assembly Processes For The Phase 2 Upgrade Of The Atlas Detector And Test Beam Measurements With Diamond Pixel Detectors
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Author : Helge Christoph Beck
language : en
Publisher:
Release Date : 2019
Development Of Pixel Module Assembly Processes For The Phase 2 Upgrade Of The Atlas Detector And Test Beam Measurements With Diamond Pixel Detectors written by Helge Christoph Beck 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.
One of the most powerful machines to study particle physics is the Large Hadron Collider (LHC). Starting in 2024, it will be upgraded to the High Luminosity-LHC (HL-LHC) to deliver even more data to measure with high precision Standard Model (SM) physics processes, and to maximise the potential to discover new physics. Higher luminosity implies a higher radiation environment, which poses challenges to the detectors of the experiments. To deal with radiation damage, pile up, and needed read-out speed, ATLAS will replace its current tracking detector with the new Inner Tracker (ITk). The inne...
Development Of Depleted Monolithic Active Pixel Sensors For High Rate And High Radiation Experiments At Hl Lhc
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Author : Toko Hirono
language : en
Publisher:
Release Date : 2019
Development Of Depleted Monolithic Active Pixel Sensors For High Rate And High Radiation Experiments At Hl Lhc written by Toko Hirono 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.
Investigations Of Planar N In N Atlas Silicon Sensors With Modified Pixel Implantations
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Author : Mareike Wagner
language : en
Publisher:
Release Date : 2020
Investigations Of Planar N In N Atlas Silicon Sensors With Modified Pixel Implantations written by Mareike Wagner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Detectors categories.