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User name X. Zheng
Log entry time 15:42:25 on March 1,2011
Entry number 349411
keyword=Target changed haCryo_Supply_F alarm limitsIncreased HIGH and HIHI limits of haCryo_Supply_F from 20/22 to 23/25 because we cannot increase the HP Heater to the required power without triggering the yellow alarm.
Expert said we should really watch the cryo supply temperature. If increasing the JT valve make the temperature to rise (now is 15K with Hall C down), then should not open the JT too much, but rather find the right balance between the cryo flow and the cryo temperature.
FIGURE 1
