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    User name Perdrisat

    Log entry time 08:08:45 on April 3,2000

    Entry number 37800

    keyword=shift summary

    Shift Summary for Calorimeter test for GEp

    Continue HV adjustments, trying to fix some discrepancy in detector numbering, HV channels and actual position in space of the blocs.
    00:33 send of test at 2.5 GeV^2. Access to Hall A with Mark Stevens and Rusty Salmons
    move leadglass to 57.7 deg. and 5.45 m, hadron to 22.97 deg. and 2.642 GeV/c.
    01:50 leave Hall, restore.
    2:12 First run is 2164. Rough integration under peak in shower blocs indicate 15% of triggers are elastic ep ; single rate is (T3) 550 Hz; therefore coinc. is 80 Hz; exactly predicted rate for this point assuming full solid angle match. Still a rough estimate!
    3:56 Do pedestal run 3170, and finer HV adjustments.
    Runs are taken at 100 microA.
    4:00 Run 3171 and 3172 are with HV adjusted to have elastic peak in channel 1700 to 2000.
    4:54 Run 3173 is a short run.
    5:06 Run 3174 is with more changes in high voltage.
    5:31 Run 3175, same HV as run 3174.
    5:41 Run 3176 more adjustment in HV. Last change in HV. Now we just take data.
    6:15 Some coda problems.
    6:19 Started run 3178.
    6:37 started run 3179.
    7:04 started run 3180
    7:30 MCC called for ~15min stop (IOC reboot). End of data taking.
    7:40 Put target to sleep. fan 8%, JT 20%