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Title: Performance of Michigan sMDT prototype chambers for the HL-LHC ATLAS muon detector upgrade

Journal Article · · Journal of Instrumentation
 [1];  [1];  [1];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
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A new small-diameter Monitored Drift Tube (sMDT) chamber has been developed for the muon spectrometer of the ATLAS experiment to handle the higher collision rates expected at the CERN High Luminosity Large Hadron Collider (HL-LHC). This paper presents measurements of the tracking resolution and hit efficiency of two prototype sMDT chambers constructed at the University of Michigan. Using cosmic-ray muons the sMDT tracking resolution of 103.7 ± 8.1 μm was measured for one chamber and 101.8 ± 7.8 μm for the other, compared with a design resolution of 106 μm. A further tracking resolution improvement to 83.4 ± 7.8 μm was obtained by using new high-gain readout electronics which will be added for HL-LHC. An average tracking efficiency of (98.5 ± 0.2)% was found for both chambers. The methodology used to determine the detector tracking resolution and efficiency, including reconstruction of sMDT data and a Geant4 simulation of the test chamber, is presented in detail.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0007859
OSTI ID:
1866060
Journal Information:
Journal of Instrumentation, Vol. 16, Issue 11; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (8)

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journal July 2003
Design of a Time-to-Digital Converter ASIC and a mini-DAQ system for the Phase-2 upgrade of the ATLAS Monitored Drift Tube detector
  • Guo, Yuxiang; Wang, Jinhong; Liang, Yu
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journal February 2021
Autocalibration of high precision drift tubes journal March 1997
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Review of Particle Physics journal August 2018
Resolution studies of cosmic-ray tracks in a TPC with GEM readout
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journal February 2005
New high-precision drift-tube detectors for the ATLAS muon spectrometer journal June 2017
Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2 journal September 2019

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Muon spectrometers
Wire chambers
Detector modelling and simulations I