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User name R Michaels
Log entry time 15:07:14 on August 23, 2009
Entry number 285471
This entry is a followup to: 285468
fEvtHdr.fEvtType is determined by the trigger supervisor. The first trigger N=1,2,3 (etc)
which arrives in time determines evtype=1,2,3 but if they overlap within the window (ca
10 nsec) CODA calls it "evtype=5". Meanwhile D.evtypebits is determined by a TDC which
looks at triggers AFTER prescaling. Cut on a time window to determine if the bit is there.
Whether this is correctly plugged in, where it is plugged in, and what the TDC cuts need to
be should be checked before running if you care about the info. I doubt that it was checked,
and considering the big upheaval from Bigbite it should probably be checked.
The general ideas of CODA event type, etc, are documented in great detail on the DAQ page.