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    User name jpchen

    Log entry time 16:01:29 on May18,2009

    Entry number 274535

    keyword=day shift summary

    Day shift summary:

    Shift workers: J. P. Chen (SL), B. Anderson(TO), B. Michaels(3rd)

    8:00 production 10 uA on pol. He3
    8:24 end run 2411/21317 production on He3.
    8:25 Jin Ge ttop/start HAPPEX(31390/31391)/Compton(16958/16959).
    8:25 NMR: 61.5%.
    8:30 reference was filled with 95 psig D2. vented reference cell
    then evacuated. Adjusted pressure gauge (-18 to -15 psgi).
    Filled with 100 psig D2.
    8:41 started reference D2 run. First 7 uA (deadtime R=10%, L=3%),
    increased to 10 uA (R=13%,L=5%).
    10:00 vent and then evacuated reference cell.
    Empty cell run.
    10:50 filled reference cell to 35 psig N2. 10 uA.
    11:30 Alexandre Camsonne called to inform us that he made some changes to Compton and asked us to stop and start Compton
    I stopped run 16959, but end-run failed.
    Sirihs took over Compton to do tests on cavity.
    12:12 moved to multi-12C, 5 uA.
    12:45 moved to pol. He3.
    NMR=63.88%.
    Back to production, 10 uA on He3. (2419/21325).
    13:20-13:24 After run 2419/21325, Stopped happex run 31391.
    Requested beam 1/2-wave plate out (informed Hall B earlier).
    Checked it is OUT.
    Started happex run 31392.
    Then resume production 2420/21326.

    run L/R Events I/targets comments
    2411/21317 5M/4.1M 10uA on pol. He3 New HAPEX/Compton run 31391/16959) before this run started.

    Reference cell/multi-12C runs:
    2412/21318 5M/3.7M 10uA on D2 (started 7 uA, increased to 10 uA)
    2413/21319 5M/3.7M 10uA on D2
    2414/21320 5M/1.8M 10uA on Empty
    2415/21321 0.18M/0.27M 10uA on 35 psig N2, check prescale factor,
    2416/21322 5M/4.3M, 10uA on 35 psig N2.
    2417/21323 5M/4.3M, 10uA on 35 psig N2.
    2418/21324 5M/4.6M, 5uA on multi-12C.

    Back to production on pol. He3.
    2419/21325 5M/4.1M 10uA on pol. He3. Beam 1/2-plate IN.
    2420/21326 5M/4.1M 10uA on pol. He3. Beam 1/2-wave plate OUT, new Happex run 31392 before this run started.
    2421/24327 5M/4.1M 10uA on pol. He3.
    2422/24328 5M/4.1M 10uA on pol. He3.
    2423/24329 5M/4.1M 10uA on pol. He3.
    2424/24330 5M/4.1M 10uA on pol. He3.
    2425/24331 10uA on pol. He3. Still on-going at the end of shift.