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User name V. Sulkosky
Log entry time 14:07:25 on March 13, 2011
Entry number 351562
keyword=Escorted Access to Check T6 LHRS+BB Trigger
I made an escorted access to check the missing T6 trigger (LHRS+E-plane).
First I thought there was a bad output on the coincidence module for the
T3 (LHRS) trigger. However when I had the coincidence module in "AND"
mode, I could not see a coincidence even though I could see T3 and E-plane
singles overlap on a scope.
Eventually I traced the problem to bent pin on a 1 ns cable where the T3
trigger is taken to form the coincidence between T3 and E-plane singles.
I replaced the cable with a 2 ns cable, since I did not have another 1 ns
cable handy. This restored the T6 coincidence trigger.
A copy of this log entry has been emailed to: zhanxh,doug,eip,orchen,igorko,nmuangma