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SUMMARY:Detector challenges of the strong-field QED experiment LUXE at the
  European XFEL
DTSTART;VALUE=DATE-TIME:20230905T152000Z
DTEND;VALUE=DATE-TIME:20230905T154000Z
DTSTAMP;VALUE=DATE-TIME:20260717T050152Z
UID:indico-contribution-3223@indico.tlabs.ac.za
DESCRIPTION:Speakers: Bruschi Marco (CERN)\nThe LUXE experiment aims at st
 udying high-field QED in electron-laser and photon-laser interactions\, wi
 th the 16.5 GeV electron beam of the European XFEL and a laser beam with p
 ower of up to 350 TW. The experiment will measure the spectra of electrons
 \, positrons and photons in expected ranges of $10^{−3}$ to $10^{9}$ per
  1 Hz bunch crossing\, depending on the laser power and focus. These measu
 rements have to be performed in the presence of low-energy high radiation-
 background. To meet these challenges\, for high-rate electron and photon f
 luxes\, the experiment will use Cherenkov radiation detectors\, scintillat
 or screens\, sapphire sensors\, as well as lead-glass monitors for backsca
 ttering off the beam-dump. A four-layer silicon-pixel tracker and a compac
 t electromagnetic tungsten calorimeter will be used to measure the positro
 n spectra. The layout of the experiment and the expected performance under
  the harsh radiation conditions will be presented. Particular attention wi
 ll be devoted to the sapphire sensors gamma beam profiler (GBP) which shou
 ld provide a 5 um precise Compton-scattered gammas beam profile width\, wh
 ich in turn\, will allow a 5% determination of the absolute laser field in
 tensity experienced by the electron beam. This performances is  quite chal
 lenging\, given the high irradiation dose experienced by the  GBP (about 1
  MGy/year). The use of sapphire sensors in high energy physics experiments
  is quite novel\, and details will be given on the R&D performed until now
  to assess their performances in the harsh environment of the LUXE experim
 ent. \nThe experiment has received stage 1 critical approval (CD1) from th
 e DESY management and is about to publish its technical design report (TDR
 ). It is expected to start running in 2025/26.\n\nhttps://indico.tlabs.ac.
 za/event/112/contributions/3223/
LOCATION: Meeting Room 2.64 - 2.66
URL:https://indico.tlabs.ac.za/event/112/contributions/3223/
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