Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/4319
Title: Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons
Authors: Aad, G.
Abbott, B.
Abdallah, J.
Abdelalim, A. A.
Abdesselam, A.
Abdinov, O.
The ATLAS Collaboration
Sultansoy, Saleh
Keywords: [No Keywords]
Issue Date: 2010
Publisher: Springer New York LLC
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 leads to an estimated contribution to the constant term of (0.290.040.05)% in the barrel and (0.540.040.06)% 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/?s at 88.5 K and 1 kV/mm. © 2010 CERN for the benefit of the ATLAS collaboration.
URI: https://doi.org/10.1140/epjc/s10052-010-1403-6
https://hdl.handle.net/20.500.11851/4319
ISSN: 1434-6044
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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