Aad, G;
Abbott, B;
Abbott, DC;
Abdinov, O;
Abud, AA;
Abeling, K;
Abhayasinghe, DK;
... Zwalinski, L; + view all
(2019)
Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2.
Journal of Instrumentation
, 14
, Article P09011. 10.1088/1748-0221/14/09/P09011.
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Abstract
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. The final single-hit spatial resolution, averaged over 1172 monitored drift tube chambers, is 81.7 ± 2.2 μm.
| Type: | Article |
|---|---|
| Title: | Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1748-0221/14/09/P09011 |
| Publisher version: | https://doi.org/10.1088/1748-0221/14/09/P09011 |
| Language: | English |
| Additional information: | © 2019 CERN for the benefit of the ATLAS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0/). |
| Keywords: | Gaseous detectors; Muon spectrometers; Particle tracking detectors (Gaseous detectors); Wire chambers (MWPC, Thin-gap chambers, drift chambers, drift tubes, proportional chambers etc) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10083268 |
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