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SUMMARY:Commissioning of the new small-diameter Monitored Drift Tube detec
 tors for the phase-1 upgrade of the ATLAS muon spectrometer.
DTSTART;VALUE=DATE-TIME:20201007T153500Z
DTEND;VALUE=DATE-TIME:20201007T155000Z
DTSTAMP;VALUE=DATE-TIME:20260611T005900Z
UID:indico-contribution-2165@cern.ch
DESCRIPTION:Speakers: Elena Voevodina (Max Planck Institut für Physik - W
 erner Heisenberg Institute)\nThe Muon Drift Tube (MDT) chambers provide ve
 ry precise and reliable muon tracking and momentum measurement in the ATLA
 S muon spectrometer. Already in Run 2 of the LHC they have to cope with ve
 ry high background counting rates up to 500 $Hz/cm^2$ in the inner endcap 
 layers. At High-Luminosity LHC (HL-LHC)\, the background rates are expecte
 d to increase by almost a factor of 10. New small (15 mm)-diameter Muon Dr
 ift Tube (so-called sMDT) detectors have been developed for upgrades of th
 e muon spectrometer. They provide an about an order of magnitude higher ra
 te capability and allow for the installation of additional new triple-RPC 
 trigger chambers in the barrel inner layer of the muon detector for HL-LHC
 . They have been designed for mass production at the Max Planck Institute 
 (MPI) for Physics in Munich and achieve a sense of wire positioning accura
 cy of 5 microns. A pilot project for the barrel inner layer upgrade is und
 erway during the 2019/20 LHC shutdown. Several sMDT chambers have already 
 been installed and operated in the ATLAS detector. The detailed studies of
  the muon detection efficiency and muon track resolution have been carried
  out after the assembling of the sMDT detectors in MPI and repeated at CER
 N after the integration with the new tRPC detectors. The author will descr
 ibe the detector design\, the quality assurance and certification path\, a
 s well as will present the status of the installation and commissioning\, 
 worth its preliminary results and an overview for the complete integration
  of the sMDT project In the ATLAS experiment.\n\nhttps://indico.particle.m
 ephi.ru/event/35/contributions/2165/
LOCATION:Zoom Facilities
URL:https://indico.particle.mephi.ru/event/35/contributions/2165/
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