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SUMMARY:The GMT detector alignment in the STAR experiment
DTSTART;VALUE=DATE-TIME:20151006T113000Z
DTEND;VALUE=DATE-TIME:20151006T120000Z
DTSTAMP;VALUE=DATE-TIME:20261008T191150Z
UID:indico-contribution-340@cern.ch
DESCRIPTION:Speakers: Nikita Ermakov (National Research Nuclear University
  MEPhI (Moscow Engineering Physics Institute))\nThe Solenoidal Tracker At 
 RHIC (STAR) uses the Time Projection Chamber\n(TPC) in order to perform tr
 acking and the particle identification. With\nincreasing statistics\, it h
 as become critical to reduce systematic\nuncertainties due to TPC alignmen
 t and distortion corrections (such as\nspace charge\, which has also grown
  with increasing luminosity). In order\nto improve these corrections and m
 onitor non-static distortions\,\nGEM-based chambers (GMT) were installed a
 t eight locations outside TPC\nat the Time-Of-Flight (TOF) radius where th
 ey will provide the maximum\nsensitivity to the distortions. The GMT shoul
 d have resolution ~150 um\nin both longitudinal (drift) and transverse dir
 ections and should be\naligned with regard to the TPC by ~200 um. To serve
  that purpose we\ndeveloped the software (Cluster Finder) that searches fo
 r clusters in\nADC signals of each module in both directions (longitudinal
  and transverse) after the pedestal subtraction and measure its positions 
 and deviations. By using this information the\nalignment procedure of the 
 modules with regard to TPC has been completed\nand the required resolution
  was achieved.\n\nhttps://indico.particle.mephi.ru/event/2/contributions/3
 40/
LOCATION:Milan Hotel 4*
URL:https://indico.particle.mephi.ru/event/2/contributions/340/
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