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    User name Kai

    Log entry time 01:37:38 on October12,2009

    Entry number 294488

    keyword=increase JT valve by 0.3

    After beam recover, I found that the heat power was zero most of the time when beam stable. But this will lead to lose of the feedback control when target temperature goes higher than normal. In addition, when beam trips, it will also need longer time to recover the target temperature. Thus, I increase the JT valve a little bit by 0.3. Checked that cryoflows and cryo temps are OK. The result is good, and target temperature is more stable than before.

    FIGURE 1