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    User name jpchen

    Log entry time 16:02:22 on February28,2011

    Entry number 349219

    keyword=day shift summary

    Day shift summary

    Shift workers: J. P. Chen (SL), R. Michaels (TO), V. Punjabi

    8:00 optics data taking for BB/LHRS optics at 400 MeV, optics/15cmDummy/4cmDummy/BeO/4cmDummy/15cmDummy/4cmLH2/4cmLD2
    Totla 500 K for each target.
    Repeated on 4cmDummy and 15cmDummy to get enough statistics (each run had ~250K).
    9:55-10:00 coda stuck, restarted
    10:30 moved left spectrometer to 23 degrees for the Bigbite optics at 450 MeV. Take optics data for BigBite at 450 MeV
    4cmLD2/4cmLH2/15cmDummy/ Started on optics target.
    10:50 right dipole tripped.
    11:35 MCC called that CHL tripped. No beam for a while.
    11:50 called for controlled access.
    11:50 started to ramping down left HRS magnets.
    12:20 Left magnets all 0.
    12:30 Hall in controlled access.
    Howard/Heidi/Jassi in hall for left spectrometer polarity switch and also look into the right dipole.
    Zhihong in hall for detector work.
    Doug in hall for BB angle rotation, BB sieve insertion and Right sieve removal.
    16:00 back to beam permit


    BB 400 MeV optics run, all 10 uA.
    2026, optics target, 444K
    2027, 15 cm dummy, 275K
    2028, 4 cm Dummy, 275K
    2029, BeO, 261K,
    2030, BeO, 306K,
    2031, 4cm dummy, 264K
    2032, 15 cm dummy, 263K,
    2033, 4cm LH2, 565K.
    2034, coda crash.
    2035 4cm LD2, 522K.

    BB 450 MeV optics run, all 10 uA
    2036, 4cm LD2, 571K
    2037, 4cm LH2, 526K
    2038, 15cm dummy, 523K
    2039, optics target, short, prescale6 not set properly
    2040. optics target, CHL crash. no data.