Production Integration And Commissioning Of The Atlas Insertable B Layer And Test Beam Studies Of New Pixel Technologies For The Hl Lhc
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Production Integration And Commissioning Of The Atlas Insertable B Layer And Test Beam Studies Of New Pixel Technologies For The Hl Lhc
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Author : Javier Bilbao De Mendizabal
language : en
Publisher:
Release Date : 2016
Production Integration And Commissioning Of The Atlas Insertable B Layer And Test Beam Studies Of New Pixel Technologies For The Hl Lhc written by Javier Bilbao De Mendizabal 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.
Testbeam Measurements With Pixel Sensors For The Atlas Insertable B Layer Project
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Author :
language : en
Publisher:
Release Date : 2014
Testbeam Measurements With Pixel Sensors For The Atlas Insertable B Layer Project written by 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.
During the current long machine shutdown of the Large Hadron Collider (LHC) at CERN (Geneva), the innermost part of the ATLAS experiment, the pixel detector, is upgraded. The existing ATLAS pixel system is equipped with silicon sensors, organized in three barrel layers and three end cap disks on either side. To cope with the higher instantaneous luminosity in the future and for compensation of radiation damages due to past and near future running time of the experiment, a new fourth pixel detector layer is inserted into the existing system. This additional pixel layer is called ...
Test Beam Results Of 3d Silicon Pixel Sensors For The Atlas Upgrade
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Author :
language : en
Publisher:
Release Date : 2011
Test Beam Results Of 3d Silicon Pixel Sensors For The Atlas Upgrade written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Results on beam tests of 3D silicon pixel sensors aimed at the ATLAS Insertable-B-Layer and High Luminosity LHC (HL-LHC) upgrades are presented. Measurements include charge collection, tracking efficiency and charge sharing between pixel cells, as a function of track incident angle, and were performed with and without a 1.6 T magnetic field oriented as the ATLAS Inner Detector solenoid field. Sensors were bump bonded to the front-end chip currently used in the ATLAS pixel detector. Full 3D sensors, with electrodes penetrating through the entire wafer thickness and active edge, and double-sided 3D sensors with partially overlapping bias and read-out electrodes were tested and showed comparable performance. Full and partial 3D pixel detectors have been tested, with and without a 1.6T magnetic field, in high energy pion beams at the CERN SPS North Area in 2009. Sensors characteristics have been measured as a function of the beam incident angle and compared to a regular planar pixel device. Overall full and partial 3D devices have similar behavior. Magnetic field has no sizeable effect on 3D performances. Due to electrode inefficiency 3D devices exhibit some loss of tracking efficiency for normal incident tracks but recover full efficiency with tilted tracks. As expected due to the electric field configuration 3D sensors have little charge sharing between cells.
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.
Contribution To The Construction Of The Insertable B Layer Of Atlas For High Luminosity Upgrade And Research For Invisible Higgs
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Author : Ahmed Bassalat
language : en
Publisher:
Release Date : 2015
Contribution To The Construction Of The Insertable B Layer Of Atlas For High Luminosity Upgrade And Research For Invisible Higgs written by Ahmed Bassalat 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.
For Run 2 of the LHC a fourth, innermost Pixel Detector layer on a smaller radius beampipe has been installed in the ATLAS Detector to add redundancy against radiation damage ofthe current Pixel Detector and to ensure a high quality tracking and b-tagging performance ofthe Inner Detector over the coming years until the High Luminosity Upgrade. State of the artcomponents have been produced and assembled onto support structures known as staves overthe last two years. In total, 20 staves have been built and qualified in a designated QualityAssurance setup at CERN of which 14 have been integrated onto the beam pipe. In the secondpart, A search for a Higgs boson produced via vector-boson fusion and decaying into invisibleparticles is discussed, using 20.3 fb-1 of proton proton collision data at the centre of massenergy of 8 TeV recorded by the ATLAS detector at the LHC. For a Higgs boson with a massof 125 GeV, assuming the Standard Model production cross section, an upper bound of 0.28is set on the branching fraction of H →invisible at 90% confidence level, where the expectedupper limit is 0.31. The results are interpreted in model of Higgs portal dark matter where thebranching fraction limit is converted into upper bounds on the dark matter nucleon scatteringcross section as a function of the dark matter particle mass, and compared to results from thedirect dark matter detection experiments.
Test Beam Studies Of Pixel Detector Prototypes For The Atlas Experiment At The High Luminosity Large Hadron Collider
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Author : Tobias Bisanz
language : en
Publisher:
Release Date : 2018
Test Beam Studies Of Pixel Detector Prototypes For The Atlas Experiment At The High Luminosity Large Hadron Collider written by Tobias Bisanz 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.
The upgrade of the Large Hadron Collider (LHC) in the mid-2020's to the High Luminosity Large Hadron Collider will provide large amounts of data, enabling precision measurements of Standard Model processes and searches for new physics. This will also maximise the physics potential of the experiments located at the LHC. In order to record the desired integrated luminosity, the ATLAS detector will face challenges regarding the radiation damage, pile-up and amount of data. To cope with those challenges, the entire tracking detector is replaced by the new Inner Tracker, ITk. In order to develop...
Pixel Detector Studies For The Atlas Itk Upgrade For The Hl Lhc
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Author : Silke Möbius
language : en
Publisher:
Release Date : 2023
Pixel Detector Studies For The Atlas Itk Upgrade For The Hl Lhc written by Silke Möbius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
The integrated luminosity of the Large Hadron Collider (lhc), which is proportional to the number of particles colliding and thus data being collected, is planned to be increased by a factor of 5-7.5 compared to the design luminosity of the lhc by the end of the 2020s. This step is motivated by the potential to measure Standard Model physics processes especially in the top quark and Higgs sector with high precision and discover new physics. However, this upgrade to the High Luminosity-lhc will result in an increased particle density in the experiments, causing a higher hit occupancy in the ...
Collisions And Collaboration
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Author : Max Boisot
language : en
Publisher: Oxford University Press
Release Date : 2011-07-28
Collisions And Collaboration written by Max Boisot and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-28 with Business & Economics categories.
The Large Hadron Collider at CERN is the world's largest scientific experiment involving 3,000 scientists from 38 countries. Here a team of organization theorists collaborate with leading figures at CERN to understand how this project has been organized and what lessons can be learnt for the management of major projects and 'big science'.
Studies On Irradiated Pixel Detectors For The Atlas Ibl And Hl Lhc Upgrade
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Author :
language : en
Publisher:
Release Date : 2015
Studies On Irradiated Pixel Detectors For The Atlas Ibl And Hl Lhc Upgrade 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 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...