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SUMMARY:Upgrade of the CMS instrumentation for luminosity and machine indu
 ced background measurements
DTSTART;VALUE=DATE-TIME:20140703T110000Z
DTEND;VALUE=DATE-TIME:20140703T111500Z
DTSTAMP;VALUE=DATE-TIME:20260612T021836Z
UID:indico-contribution-1509@indico.ific.uv.es
DESCRIPTION:Speakers: Anne Evelyn Dabrowski (CERN\, Switzerland)\nTo cope 
 with the higher luminosity\, higher energy and shorter bunch spacing of 25
  ns at the LHC after 2014\, an upgrade program is performed for the detect
 ors to measure the luminosity and machine induced background. A new detect
 or is the pixel luminosity telescope consisting of 8 telescopes\, equipped
  with silicon pixel sensors\, on both ends of the interactions point (IP).
  The Beam Conditions Monitoring system\, using diamond sensors\, is upgrad
 ed to 24 sensors\, 12 on each end of the IP. In addition\, dedicated fast 
 ASICs in 130 nm technology and dead-time free backend electronics using FP
 GAs for fast signal processing are being developed and built. Also\, the p
 art of the forward HCAL used for the luminosity measurement is instrumente
 d with new readout electronics\, in uTCA standards. The machine induced ba
 ckground measurement will be supported by a new system of direction sensit
 ive quartz Cherenkov counters\, with excellent timing resolution. A data a
 cquisition architecture is developed that is common for all subsystems and
  allows for synchronization across different hardware. The design of the n
 ew system will be presented\, and a report will be given on the performanc
 e of each system measured in several test-beam campaigns and prototype ope
 ration in the last LHC run.\n\nhttps://indico.ific.uv.es/event/2025/contri
 butions/1509/
LOCATION: Sala 6+7
URL:https://indico.ific.uv.es/event/2025/contributions/1509/
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