Readiness of the ATLAS liquid argon calorimeter for LHC collisions
Name
Aad2010_Article_ReadinessOfTheATLASLiquidArgon.pdf
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2.1 MB
Format
Adobe PDF
Checksum (MD5)
2530a6b621bb51103a2e2030576f3786
Author(s)
ATLAS Collaboration
Taylor, Frank E
Date Issued
August 2010
Journal
European Physical Journal C: Particles and Fields
Publisher
Springer Nature
Citation
Aad, G. et al. “Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions.” The European Physical Journal C 70, 3 (August 2010): 723–753 © 2010 CERN for the benefit of the ATLAS collaboration
Version
Final published version
Abstract
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. Keywords: Calorimeter; Drift Time; Liquid Argon; Electromagnetic Shower; Cosmic Muon
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/EPJC/S10052-010-1354-Y
