Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons

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In this article, measurements of the drift time (Tdrift) of the ionization electrons in the ATLAS ElectroMagnetic (EM) calorimeter are presented, using 32-samples cosmic muon data. In particular, the drift time measurement is used to assess the intrinsic uniformity of the calorimeter gaps and estima...

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Detalles Bibliográficos
Autor principal: Gabaldon, C
Lenguaje:eng
Publicado: 2010
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1301524
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author Gabaldon, C
author_facet Gabaldon, C
author_sort Gabaldon, C
collection CERN
description In this article, measurements of the drift time (Tdrift) of the ionization electrons in the ATLAS ElectroMagnetic (EM) calorimeter are presented, using 32-samples cosmic muon data. In particular, the drift time measurement is used to assess the intrinsic uniformity of the calorimeter gaps and estimate its impact on the constant term of the energy resolution. This analysis leads to an estimated contribution to the constant term of (0.29+0.05-0.04) % in the barrel and (0.54+0.06-0.04) % in the endcaps. The same data are used to measure the drift velocity of ionization electrons in liquid argon, which is found to be 4.61 ± 0.07 mm/μs at 88.5 K and 1 kV/mm.
id cern-1301524
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-13015242019-09-30T06:29:59Zhttp://cds.cern.ch/record/1301524engGabaldon, CDrift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muonsDetectors and Experimental TechniquesIn this article, measurements of the drift time (Tdrift) of the ionization electrons in the ATLAS ElectroMagnetic (EM) calorimeter are presented, using 32-samples cosmic muon data. In particular, the drift time measurement is used to assess the intrinsic uniformity of the calorimeter gaps and estimate its impact on the constant term of the energy resolution. This analysis leads to an estimated contribution to the constant term of (0.29+0.05-0.04) % in the barrel and (0.54+0.06-0.04) % in the endcaps. The same data are used to measure the drift velocity of ionization electrons in liquid argon, which is found to be 4.61 ± 0.07 mm/μs at 88.5 K and 1 kV/mm.ATL-LARG-PROC-2010-013oai:cds.cern.ch:13015242010-10-21
spellingShingle Detectors and Experimental Techniques
Gabaldon, C
Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title_full Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title_fullStr Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title_full_unstemmed Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title_short Drift Time measurement in the ATLAS Liquid Argon electromagnetic calorimeter using cosmic muons
title_sort drift time measurement in the atlas liquid argon electromagnetic calorimeter using cosmic muons
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1301524
work_keys_str_mv AT gabaldonc drifttimemeasurementintheatlasliquidargonelectromagneticcalorimeterusingcosmicmuons

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