¥System takes 424 ECL signals from 27
CAEN v895 calorimeterÕs discriminators and process them on v1495 logic units
¥System takes 60-80 (to be decided)
ECL signals from 5 CAEN v895 hodoscopeÕs discriminators and process them on v1495 logic units
¥System delivers 1 ECL signal to be
used as CLAS Trigger Supervisor ASYNC input: level Ô1Õ means ÔpassÕ, level Ô0Õ means ÔfailÕ
¥Trigger logic is controlled by
following parameters: discriminators thresholds, the number of towers per cluster (from 1 to
9), the minimum number of clusters (one or two), overlap area between
calorimeter cluster and hodoscope hit. Size of cluster search window is
fixed and always 3x3 towers
¥Following picture shows preliminary
electronics layout
¥