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    User name jpchen

    Log entry time 12:13:56 on October 8,2009

    Entry number 293833


    keyword=cryo flow and flow limit

    Cryo supply temperatue still fluctuate, but is decreasing, which should help make more cooling power available.
    Note to TO, when you adjust JT valve, especially when increase it while already close to limit, you need to pay attention to the supply temperature. If you find that the flow does not increase when you open J-T valve and cryo supply temperature is rising, you reached the limit and the load is already too much. In this case, you should decreasing the load (decreasing J-T valve) and will have to limit your maximum current until cryo become stable again.

    FIGURE 1