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SUMMARY:CESIUM CALIBRATION OF THE LHCb HADRON CALORIMETER
DTSTART;VALUE=DATE-TIME:20161011T121500Z
DTEND;VALUE=DATE-TIME:20161011T124500Z
DTSTAMP;VALUE=DATE-TIME:20260722T171022Z
UID:indico-contribution-612@cern.ch
DESCRIPTION:Speakers: Dmitrii Pereima (ITEP\, MEPhI)\nThe LHCb Hadron Calo
 rimeter (HCAL) is a sampling iron-scintillator calorimeter of ${5.6λ_{I}}
 $ thickness. It is equipped with an embedded calibration system based on $
 Cs^{137}$ radioactive source\, which is its main calibration tool. \nHCAL 
 information is used in the LHCb L0 trigger for event selection\, therefore
  it is important to have a precise and reliable calibration system which p
 roduces result immediately after the calibration run. \nThis report descri
 bes the layout of the LHCb HCAL and its calibration system and details of 
 the calibration procedure. Special emphasis is put on the data analysis pr
 ocedure and visualization software. The cesium calibration system is regul
 arly used for the HCAL calibration starting from the beginning of the LHCb
  operation in 2008. The results on the HCAL performance and last calibrati
 on run will be discussed.\n\nhttps://indico.particle.mephi.ru/event/4/cont
 ributions/612/
LOCATION:Milan Hotel Hall of the 2nd floor
URL:https://indico.particle.mephi.ru/event/4/contributions/612/
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