¥DVCS Calorimeter Trigger System must
search for the clusters produced by photons or electrons; normally presence of at
least two clusters will be required for calibration runs (search for
two photons from pi0 decay) and at least one cluster for production runs
(search for one electron)
¥Cluster is defined as more then N
towers (N<=9) with energy deposition above threshold located within 3x3 towers rectangular area (figure on
following slide)
¥CAEN v895B discriminators and v1495
logic unit will be used
¥Hodoscope will be installed in front
of DVCS calorimeter, it must part of the trigger system as well
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