Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2

0520479 - FZÚ 2020 RIV GB eng J - Journal Article
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2925 authors
Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2.
Journal of Instrumentation. Roč. 14, č. 9 (2019), s. 1-36, č. článku P09011. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT LM2015058
Institutional support: RVO:68378271
Keywords : gaseous detectors * muon spectrometers * particle tracking detectors * wire chambers * MWPC * thin-gap chambers * drift chambers
OECD category: Particles and field physics
Impact factor: 1.454, year: 2019
Method of publishing: Open access

The momentum measurement capability of the ATLAS muon spectrometer relies fundamentally on the intrinsic single-hit spatial resolution of the monitored drift tube precision tracking chambers. Optimal resolution is achieved with a dedicated calibration program that addresses the specific operating conditions of the 354 000 high-pressure drift tubes in the spectrometer. The calibrations consist of a set of timing offsets and drift time to drift distance transfer relations, and result in chamber resolution functions. This paper describes novel algorithms to obtain precision calibrations from data collected by ATLAS in LHC Run 2 and from a gas monitoring chamber, deployed in a dedicated gas facility. The algorithm output consists of a pair of correction constants per chamber which are applied to baseline calibrations, and determined to be valid for the entire ATLAS Run 2.
Permanent Link: http://hdl.handle.net/11104/0305149