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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| Format: | Article |
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Springer Nature
2018
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| Online Access: | http://hdl.handle.net/1721.1/116469 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1826195919830253568 |
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| author | ATLAS Collaboration Taylor, Frank E |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics ATLAS Collaboration Taylor, Frank E |
| author_sort | ATLAS Collaboration |
| collection | MIT |
| 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. Keywords: Calorimeter; Drift Time; Liquid Argon; Electromagnetic Shower; Cosmic Muon |
| first_indexed | 2024-09-23T10:17:55Z |
| format | Article |
| id | mit-1721.1/116469 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:17:55Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1164692024-06-26T15:14:20Z Readiness of the ATLAS liquid argon calorimeter for LHC collisions ATLAS Collaboration Taylor, Frank E Massachusetts Institute of Technology. Department of Physics Taylor, Frank E 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 2018-06-21T14:24:07Z 2018-06-21T14:24:07Z 2010-08 2010-05 2018-06-20T13:55:25Z Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/116469 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 https://orcid.org/0000-0002-7586-7253 http://dx.doi.org/10.1140/EPJC/S10052-010-1354-Y European Physical Journal C: Particles and Fields Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer Nature |
| spellingShingle | ATLAS Collaboration Taylor, Frank E Readiness of the ATLAS liquid argon calorimeter for LHC collisions |
| title | 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_short | 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/1721.1/116469 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT atlascollaboration readinessoftheatlasliquidargoncalorimeterforlhccollisions AT taylorfranke readinessoftheatlasliquidargoncalorimeterforlhccollisions |