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SUMMARY:Alternative gas mixtures for the straw detector of the TRT ATLAS e
 xperiment
DTSTART;VALUE=DATE-TIME:20151006T104500Z
DTEND;VALUE=DATE-TIME:20151006T110000Z
DTSTAMP;VALUE=DATE-TIME:20260305T200021Z
UID:indico-contribution-294@cern.ch
DESCRIPTION:Speakers: Konstantin Vorobev (National Research Nuclear Univer
 sity MEPhI (Moscow Engineering Physics Institute))\nGas mixtures based on 
 xenon\, argon\, krypton\, oxygen with the additive were studied. Values of
  the gas gain\, the breakdown voltage for the straight and curved straw wa
 s studied. It was shown that in order to provide a necessary stability an 
 addition of equal 3% oxygen is required. Safe operation range for all mixt
 ures is up to gas gain equal 5*10^4. Tests with a real Barrel module confi
 rmed these results and shown that without oxygen detector cannot sustain i
 rradiation even at the gas gain less than 2\,5*10^4 and Barrel works with 
 argon mix if oxygen content more than 1%. Barrel works with xenon mix with
 out oxygen. Safety margin for argon mix near 180 V\, for the krypton mix n
 ear 160 V\, xenon mix varies from O2 = 0% from 100 V  to 170 V for 3% of o
 xygen for gas gain equal 2\,5*10^4.\n\nhttps://indico.particle.mephi.ru/ev
 ent/2/contributions/294/
LOCATION:Milan Hotel 4* Bellini
URL:https://indico.particle.mephi.ru/event/2/contributions/294/
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