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    User name jpchen

    Log entry time 13:34:24 on January22,2001

    Entry number 55432

    keyword=cryotarget temperature/pressure oscillation

    The target temperature and pressure are oscillating. I was told that it started
    yesterday. The temperature oscillation is about 50 mK and pressure is about 0.5 psi.
    I tried to vary PID pararmeters and could not get rid of them. I guess it might
    related to the loop circulation (Fan). The effect on targte density is still small.