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    User name X. Jiang

    Log entry time 22:56:26 on April27,2009

    Entry number 269293

    keyword=Ay production run basic conditions

    one pass A_y production run basic conditions.


    For one-pass Ay production:

    1. Both arm at P=1.17590, 17 degree, never moved.

    2. 6 uA beam, rastered, 8*5 MCC setting, 4mm*4mm in Hall A.

    3. Left arm DAQ, ps3=7 only, no other triggers.
    Sacler rate, TS3=21 kHz. 5M events each run for 1/2 hour.
    Coda rate: 3kHz

    Watch out for dead time.

    4. Right arm DAQ, ps1=7 only, no other triggers.
    Scaler rate, TS1=18 kHz. 4.25 M events each run, for 1/2 hour.
    Coda rate: 2.4 kHz

    5. Make sure Happex DAQ is already running.
    Start run by hit Right-DAQ first, then Left-DAQ,
    When end run, hit Left-DAQ first, then Right-DAQ.

    6. Restart Happex-DAQ every 4h, while two-arm DAQ stopped.

    7. Watch out for Lumi screen in the back room (expert).

    8. Replay for detector checks.

    9. Watch out for target spin-flip.