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    User name Yoomin

    Log entry time 05:29:15 on September 21, 2009

    Entry number 290806

    keyword=About the unstable beam

    MCC called and said that the unstable beam is somehow related to our dithering: when it starts dithering, beam hits one of their ion chamber and trips. I told Mark about this, and we are going to watch this beam stability for a while, and if necessary, he will turn off the modulation feedback and see whether the beam gets better.