Used by Ming-Fu's image intensifier.
ACR | v xpm0 (room208 bldg 901) | |----------------------------------->xpm3 (rix hutch) v xpm2 (tmo hutch, supervisor xpm for tmo, generates group triggers and sequences of eventcodes) | |--------------------> detectors (piranha, hsd) v xpm4 (tmo hutch, 1.6us delay going through each xpm stage) | |--------------------> detectors (hsd (4 hsd channels)) | | v-----> controls timing fanout (like a simpler xpm) | v --------> TPR and other hutch controls devices | |----> multiple TTL (12?) L0GroupTrigger means xpm2 sending out group0 trigger time----> begin(from acr) Beam -100us L0GroupTrigger: ~-25us(Group0:L0Delay+fiberdelays) 0us FZPPiranha: -16us (84-75=9us, done by daq software) IntensifierTrg: ~-25us+94us (feels late? should be more like 9us) previous number that worked was 14us, which feels more correct than current 94us with TPR TREF=0
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