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

  title={Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2},
  author={Atlas Collaboration},
Themomentummeasurement capability of theATLASmuon 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… Expand
Performance Study of a sMDT Prototype Chamber for the HL-LHC ATLAS Muon Detector Upgrade
The High Luminosity Large Hadron Collider (HL-LHC) operations requires the experiments at the LHC to upgrade the detectors with new technologies to cope with much increased event rates. A newExpand
Performance of Michigan sMDT Prototype Chambers for the HL-LHC ATLAS Muon Detector Upgrade
A new small-diameter Monitored Drift Tube (sMDT) chamber has been developed for 8 the muon spectrometer of the ATLAS experiment to handle the higher collision rates expected at 9 the CERN HighExpand


Streamlined calibrations of the ATLAS precision muon chambers for initial LHC running
Abstract The ATLAS Muon Spectrometer is designed to measure the momentum of muons with a resolution of dp / p =3% at 100 GeV and 10% at 1 TeV. For this task, the spectrometer employs 355,000Expand
Drift time spectrum and gas monitoring in the ATLAS Muon Spectrometer precision chambers
Abstract The ATLAS Muon Spectrometer incorporates 354 000 drift tubes assembled into 1200 Monitored Drift Tube (MDT) precision chambers, with a total gas volume of 723 m 3 . This MDT gas, Ar 93% andExpand
The ATLAS MDT remote calibration centers
The precision chambers of the ATLAS Muon Spectrometer are built with Monitored Drift Tubes (MDT). The requirement of high accuracy and low systematic error, to achieve a transverse momentumExpand
Performance of the ATLAS Precision Muon Chambers under LHC Operating Conditions
Abstract For the muon spectrometer of the ATLAS detector at the Large Hadron Collider (LHC), large drift chambers consisting of 6–8 layers of pressurized drift tubes are used for precision trackingExpand
ATLAS muon drift tube electronics
This paper describes the electronics used for the ATLAS monitored drift tube (MDT) chambers. These chambers are the main component of the precision tracking system in the ATLAS muon spectrometer. TheExpand
Gas performance of the ATLAS MDT precision chambers
The ATLAS Muon spectrometer contains more than 350,000, Monitored Drift Tubes (MDTs). The tubes are three cm diameter, one to six meter length, and filled with a three bar mixture of Ar/CO2. As theExpand
Global Time Fit for Tracking in an Array of Drift Cells: The Drift Tubes of the ATLAS Experiment
We present a global time fit to determine the reference time event-by-event in an array of drift cells. The method is applied to the monitored drift tube tracking chambers (MDT) of the muonExpand
Resolution studies of cosmic-ray tracks in a TPC with GEM readout
Abstract A large volume time projection chamber (TPC) is a leading candidate for the central tracking detector at a future high energy linear collider. To improve the resolution a new readout basedExpand
Operation of the ATLAS muon drift-tube chambers at high background rates and in magnetic fields
In the ATLAS muon spectrometer, large drift-tube chambers are used for precision tracking. The chambers will be operated at a high neutron and /spl gamma/ background resulting in count rates of up toExpand
Commissioning of the ATLAS Muon Spectrometer with cosmic rays
The ATLAS detector at the Large Hadron Collider has collected several hundred million cosmic ray events during 2008 and 2009. These data were used to commission the Muon Spectrometer and to study theExpand