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    User name silwal

    Log entry time 02:24:18 on November 7,2009

    Entry number 297979

    keyword=change PC voltage to minimize charge asym

    we were running at a charge asymmetry of about -1600ppm. so I changed the voltage based the PITA scan taken yesterday, to make the charge asymmetry smaller. This is a temporary fix which will keep the charge asymmetry small. Eventually we may want to do some more beam studies, and definitely want to turn on the charge feedback.

    The two fig below are before and after PC voltage changes.

    FIGURE 1

    FIGURE 2