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Readiness of the ATLAS liquid argon calorimeter for LHC collisions
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
Univ Michigan, Randall Lab .ORCID-id: 0000-0002-8913-0981
Vise andre og tillknytning
2010 (engelsk)Inngår i: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 70, nr 3, s. 723-753Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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 eta (averaged over phi) 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.

sted, utgiver, år, opplag, sider
2010. Vol. 70, nr 3, s. 723-753
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-29552DOI: 10.1140/epjc/s10052-010-1354-yISI: 000285200000011Scopus ID: 2-s2.0-79851511364OAI: oai:DiVA.org:kth-29552DiVA, id: diva2:395611
Forskningsfinansiär
Knut and Alice Wallenberg FoundationSwedish Research Council
Merknad
QC 20110207Tilgjengelig fra: 2011-02-07 Laget: 2011-02-07 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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