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    User name jroche

    Log entry time 16:00:12 on October11,2009

    Entry number 294429

    keyword=day shift summary

    Day shift summary


    Timeline

    8:00- taking over night shift, run 13166 in progress
    8:30- MCC trouble shooting the separator, no beam
    9:00- beam is back, the start of the Moeller measurement is postponed by 5min while MCC is fixing beam delivery for Hall B.
    9:45- the elog states that the Moeller tuning as begun, Sasha is on deck
    13:15 - Moeller measurements over, Sasha reports that the polarization is 89%
    14:00 - beam in beam, the beam is really instable beam. The elog talks about RF issues and 2nd pass separator drift
    14:40 - stable beam, not sure how MCC fixed the problem.
    15:00 - the Compton HV keeps tripping at 1600 V, I turned it off
    16:00 - Alex is trying to turn the Compton on


    Concerns/Issue

    - Raster size: Keith noted that the width of the raster (peak to peak) is 5.5*5 mm2 while the whiteboard asks for 5.%* 5.8 mm2. A quick review of posting shows that 5*5.5 mm2 is what we are getting since October 5. Is the white board note out of date?


    Run list

    number: k of good pair -- cumulated k of good pair
    13166: 6 --
    13167: 7 -- 13
    13168 to 13171: low beam data during the Moeller
    13172: coda crash
    13173: short run whith very trippy beam
    13174: 46 -- 59