EM background rate studies

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Data sample:

  • beam photons (no interactions inside the cave)
  • collimator cave background (photon beam hallo, particles from the cave, ...)

Subdetector rates (at least one hit in the subdetector) 

             Beam background               Cave Background
  • TOF 35.9 MHz 36.8 kHz
  • Start counter 1.86 MHz 1.67 kHz
  • FCAL (Ecell > 30 MeV) 4.25 MHz 6.69 kHz
  • BCAL (Ecell > 20 MeV) 300 kHz 1+-1 kHz
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