• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT
    Make New Entry, Make Followup Entry

    User name V. Sulkosky

    Log entry time 02:08:43 on February 26, 2011

    Entry number 348709


    keyword=T6 now LHRS+BB Coincidence (late entry)

    The T6 trigger has changed.  Instead of BB singles, the trigger is now a
    coincidence between BB and LHRS.  This should be useful for the elastic
    proton calibrations we plan to do this weekend.  The original singles 
    trigger still exists but is no longer connected to the scalers or TS as a
    I did make one mistake.  I forgot to zero the edtm delay on the left HRS 
    from the N-Delta T5 simulated coincidence.  This results in an delay in
    forming coincidence T6 by about 60 ns, i.e., real T3 should come about 
    60 ns earlier.  I need to fix this before we try to use this trigger.  
    On the other hand, singles T3 should still result in us catching the 
    elastic protons in BigBite.
    To form this trigger, I used a different copy of BB singles trigger and
    T3 than what is used for the BB retiming circuit and T5 coincidence trigger.
    More details to follow in a longer post later today.

    A copy of this log entry has been emailed to: orchen,igorko,eip,kalyan,nmuangma,rshneor,doug