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Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons

Abstract:

The ionization signals in the liquid argon of the ATLAS electromagnetic calorimeter are studied in detail using cosmic muons. In particular, the drift time of the ionization electrons is measured and used to assess the intrinsic uniformity of the calorimeter gaps and estimate its impact on the constant term of the energy resolution. The drift times of electrons in the cells of the second layer of the calorimeter are uniform at the level of 1.3% in the barrel and 2.8% in the endcaps. This lead...

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Publication status:
Published

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Journal:
EUROPEAN PHYSICAL JOURNAL C
Volume:
70
Issue:
3
Pages:
755-785
Publication date:
2010-12-01
DOI:
EISSN:
1434-6052
ISSN:
1434-6044
Source identifiers:
115823
Language:
English
Pubs id:
pubs:115823
UUID:
uuid:7a95c5d3-640c-4df8-9687-5833c76bc83f
Local pid:
pubs:115823
Deposit date:
2012-12-19

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