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    User name hyde

    Log entry time 19:24:34 on October 14, 2010

    Entry number 334899

    This entry is a followup to: 334832

    keyword=S1 S2 trigger timing in TDC

    I added to DB/20100930/db_D.dat variables name crate slot chan CerInT3 crate 4 16 58 S1nT3 crate 4 16 59 S0Ac crate 4 16 60 S0Bc crate 4 16 61 S2mInT3 crate 4 16 63 note that chan 48-57 are the 10 Cerenkov tdc signals

    D.CerInT3 for TDC channel 11 (Disc on linear sum of Cer) D.S1InT3 for TDC channel 12 in Cerenkov TDC D.S2mInT3 for TDC channel 16 in Cerenkov TDC

    [looking at cosmic run 7351] Unfortunately, S1 and S2m are out of range (4095) in TDC D.CerInT3 is channel 2575, I expect that S2m would be 20-40 ns later or at most channel 3500

    I also created variables D.S0Ac and D.S0Bc for the S0 Timing signal plugged into this TDC they peak at chan 3000

    This is very different from the online gui histos Ls0lt and Ls0rt which peak at chan 500. These S0 signals in db_L.s0.dat come from crate 4 slot 12 chan 64 and 65 in TDC 1877



    A copy of this log entry has been emailed to: hisham@jlab.org, rom@jlab.org, jroche@jlab.org