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    User name X. Zheng

    Log entry time 16:10:28 on January 04, 2008

    Entry number 222673

    keyword=day shift summary

    08:00
    08:57 Finished the 3557(L)/3092(R) setting;
    Going to controlled access to fix right arm dipole.
    Start changing Left momentum to 3316.783.
    10:25 Right dipole is fixed. Now the right arm momentum is showing
    3.05783 GeV/c for a current of 1099.95A and a field of 1.3176T (D-N). So
    the 3.0925 GeV/c setting this morning ran with an actual dipole momentum
    of 3.05783 GeV/c.

    Then there was problem with accelerator magnet, no beam.

    14:30 tuned, then CW beam. Took some time to get the position right -- to
    A=(0,0), B=(-3,0)

    14:45 beam position is good, now checking raster size. New MCC value is
    3.1x3.6 to get 1.8x2.2mm;

    14:50 resume production;

    16:10 now production run on Pb target, at Left: 3316.78, Right: 2883.43 MeV/c

    Run Summary
    Beam Energy
    Right Arm
    Run# Target P0(MeV/c) Ibeam Time Nevent Comment
    22245 DUMM10cm 3092.526 8uA 4.6min 419K P0 setting was for
    quadrupoles only, dipole was set to 3047.83MeV/c for all runs
    22246 DUMM10cm same 20uA 3min 655K
    22247 C12 same 50uA 11min 1.97M
    22248 Fe same 50uA 10min 1.97M

    22249 Fe 2883.43 10uA short raster check
    22250 Fe same 50uA short raster check

    22251 Fe 2883.43 50uA 14min 2.69M
    22252 C12 same 50uA 9min 1.70M
    22253 DUMM10cm same 20uA 10min 2.20M
    22254 LH2 same 20uA 7min 1.83M
    22255 Pb same 20uA ongoing......

    Left Arm
    Run# Target P0(MeV/c) Ibeam Time Nevent Comment
    4404 DUMM10cm 3557.302 8uA 4.6min 125K
    4405 DUMM10cm same 20uA 3min 195K
    4406 C12 same 50uA 11min 463K
    4407 Fe same 50uA 10min 495K
    4408 Pb same 20uA ongoing......
    4408 Fe 3316.783 10uA short raster check
    4409 Fe same 50uA short raster check

    4410 Fe 3316.783 50uA 14min 1.68M
    4411 C12 same 50uA 9min 1.31M
    4412/3 DUMM10cm same 20uA check prescalers
    4414 DUMM10cm same 20uA 9min 1.51M
    4415 LH2 same 20uA 7min 1.89M