Readiness of the ATLAS liquid argon calorimeter for LHC collisions

The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an...

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Autor principal: Multitudinario:2792
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v70_n3_p723_Multitudinario
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_14346044_v70_n3_p723_Multitudinario2023-10-03T16:14:37Z Readiness of the ATLAS liquid argon calorimeter for LHC collisions Multitudinario:2792 The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an overview of the liquid argon calorimeter performance measured in situ with random triggers, calibration data, cosmic muons, and LHC beam splash events. Results on the detector operation, timing performance, electronics noise, and gain stability are presented. High energy deposits from radiative cosmic muons and beam splash events allow to check the intrinsic constant term of the energy resolution. The uniformity of the electromagnetic barrel calorimeter response along η (averaged over Φ) is measured at the percent level using minimum ionizing cosmic muons. Finally, studies of electromagnetic showers from radiative muons have been used to cross-check the Monte Carlo simulation. The performance results obtained using the ATLAS readout, data acquisition, and reconstruction software indicate that the liquid argon calorimeter is well-prepared for collisions at the dawn of the LHC era. © 2010 CERN for the benefit of the ATLAS collaboration. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v70_n3_p723_Multitudinario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an overview of the liquid argon calorimeter performance measured in situ with random triggers, calibration data, cosmic muons, and LHC beam splash events. Results on the detector operation, timing performance, electronics noise, and gain stability are presented. High energy deposits from radiative cosmic muons and beam splash events allow to check the intrinsic constant term of the energy resolution. The uniformity of the electromagnetic barrel calorimeter response along η (averaged over Φ) is measured at the percent level using minimum ionizing cosmic muons. Finally, studies of electromagnetic showers from radiative muons have been used to cross-check the Monte Carlo simulation. The performance results obtained using the ATLAS readout, data acquisition, and reconstruction software indicate that the liquid argon calorimeter is well-prepared for collisions at the dawn of the LHC era. © 2010 CERN for the benefit of the ATLAS collaboration.
format JOUR
author Multitudinario:2792
spellingShingle Multitudinario:2792
Readiness of the ATLAS liquid argon calorimeter for LHC collisions
author_facet Multitudinario:2792
author_sort Multitudinario:2792
title Readiness of the ATLAS liquid argon calorimeter for LHC collisions
title_short Readiness of the ATLAS liquid argon calorimeter for LHC collisions
title_full Readiness of the ATLAS liquid argon calorimeter for LHC collisions
title_fullStr Readiness of the ATLAS liquid argon calorimeter for LHC collisions
title_full_unstemmed Readiness of the ATLAS liquid argon calorimeter for LHC collisions
title_sort readiness of the atlas liquid argon calorimeter for lhc collisions
url http://hdl.handle.net/20.500.12110/paper_14346044_v70_n3_p723_Multitudinario
work_keys_str_mv AT multitudinario2792 readinessoftheatlasliquidargoncalorimeterforlhccollisions
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