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    User name A. Camsonne

    Log entry time 21:53:01 on November27,2009

    Entry number 303111

    keyword=Beam quality degraded - Compton ion chamber trips

    Ahmed told me that MCC called about the Compton ion chamber tripping.
    They are trying at low current to try to figure out the reason.
    Problem started about 30 minutes ago.
    I asked to Ahmed to turn the dithering off until the beam gets more stable in case it moves the beam at the wrong spot while beam is resuming. We will keep looking into it, if that continues we might consider calling optics on call or going straight.


    FIGURE 1