The performance of the CMS muon detector in proton-proton collisions at √s = 7 TeV at the LHC
Name
The_CMS_collaboration_2013_J._Inst._8_P11002.pdf
Description
Published version
Size
8.63 MB
Format
Adobe PDF
Checksum (MD5)
287cd72af56e7c4cbd2708fda1fb248b
Author(s)
Apyan, Aram
Bauer, Gerry P
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Date Issued
November 2013
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Citation
Chatrchyan, S. et al. "The performance of the CMS muon detector in proton-proton collisions at √s = 7 TeV at the LHC." Journal of Instrumentation 8 (November 2013): P11002 © CERN 2013 for the benefit of the CMS collaboration
Version
Final published version
Abstract
The performance of all subsystems of the CMS muon detector has been studied by using a sample of proton-proton collision data at √s = 7 TeV collected at the LHC in 2010 that corresponds to an integrated luminosity of approximately 40 pb⁻¹. The measured distributions of the major operational parameters of the drift tube (DT), cathode strip chamber (CSC), and resistive plate chamber (RPC) systems met the design specifications. The spatial resolution per chamber was 80–120 μm in the DTs, 40–150 μm in the CSCs, and 0.8–1.2 cm in the RPCs. The time resolution achievable was 3 ns or better per chamber for all 3 systems. The efficiency for reconstructing hits and track segments originating from muons traversing the muon chambers was in the range 95–98%. The CSC and DT systems provided muon track segments for the CMS trigger with over 96% efficiency, and identified the correct triggering bunch crossing in over 99.5% of such events. The measured performance is well reproduced by Monte Carlo simulation of the muon system down to the level of individual channel response. The results confirm the high efficiency of the muon system, the robustness of the design against hardware failures, and its effectiveness in the discrimination of backgrounds.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
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DOI of Published Version
https://doi.org/10.1088/1748-0221/8/11/P11002
