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

Aad, G ; Åkesson, Torsten LU orcid ; Bocchetta, Simona LU ; Bryngemark, Lene LU ; Corrigan, Eric Edward LU ; Doglioni, Caterina LU ; Gregersen, Kristian LU ; Brottmann Hansen, Eva LU ; Hedberg, Vincent LU and Jarlskog, Göran LU , et al. (2019) In Journal of Instrumentation 14(9).
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... (More)
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. © 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. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Gaseous detectors, Muon spectrometers, Particle tracking detectors (gaseous detectors), Wire chambers (MWPC, thin-gap chambers, drift chambers, drift tubes, proportional chambers etc), Charged particles, Gas detectors, Image resolution, Ionization chambers, Particle spectrometers, Tubes (components), ATLAS Muon spectrometer, Baseline calibration, High pressure drift tubes, Momentum measurement, Monitored drift tubes, Muon spectrometer, Thin Gap Chamber, Drift chambers
in
Journal of Instrumentation
volume
14
issue
9
article number
P09011
publisher
IOP Publishing
external identifiers
  • scopus:85075046132
ISSN
1748-0221
DOI
10.1088/1748-0221/14/09/P09011
language
English
LU publication?
yes
id
fc0e5c54-bd01-4050-bd3b-e8ba934ec7d4
date added to LUP
2019-12-02 13:04:11
date last changed
2023-04-10 04:56:28
@article{fc0e5c54-bd01-4050-bd3b-e8ba934ec7d4,
  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. © 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. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.}},
  author       = {{Aad, G and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Corrigan, Eric Edward and Doglioni, Caterina and Gregersen, Kristian and Brottmann Hansen, Eva and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey André Adrien and Pöttgen, Ruth and Poulsen, Trine and Skorda, Eleni and Smirnova, Oxana and Zwalinski, L}},
  issn         = {{1748-0221}},
  keywords     = {{Gaseous detectors; Muon spectrometers; Particle tracking detectors (gaseous detectors); Wire chambers (MWPC, thin-gap chambers, drift chambers, drift tubes, proportional chambers etc); Charged particles; Gas detectors; Image resolution; Ionization chambers; Particle spectrometers; Tubes (components); ATLAS Muon spectrometer; Baseline calibration; High pressure drift tubes; Momentum measurement; Monitored drift tubes; Muon spectrometer; Thin Gap Chamber; Drift chambers}},
  language     = {{eng}},
  number       = {{9}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Instrumentation}},
  title        = {{Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2}},
  url          = {{http://dx.doi.org/10.1088/1748-0221/14/09/P09011}},
  doi          = {{10.1088/1748-0221/14/09/P09011}},
  volume       = {{14}},
  year         = {{2019}},
}