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    User name N Toro

    Log entry time 18:29:24 on July 3,2010

    Entry number 329735

    keyword=magnet heating test

    trying to get some preliminary heating measurements during the ion chamber calibration (purple line is thermocouple):

    At 17:45 -- 3 minutes at 18uA heated by 4 deg C (from 46 to 50)
    At 18:07 -- 2 minutes at 28uA heated by 3 deg (59 to 62)
    At 18:18 -- for 5uA current, temperature seems stable at 68 degrees

    (Also: left VDC leakage current 25-30 for 30 uA beam.



    FIGURE 1