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User name C. Fernandez-Ramirez
Log entry time 02:15:28 on March18,2007
Entry number 196380
keyword=Hall A current limitation: MCC Entry
The following message regarding the Hall A current limitation appears in the ELOG (entry 1364724, figures can be found there):
"We have been unable to raise Hall A's current above 20uA CW without getting Compton Ion Chamber trips. Investigation so far has not nailed down any particular source (i.e. Injector phases, Hall A orbit change, separation, etc.) We have noted that the Compton Ion Chamber rates have elavated and are more noisy than they were before the trips and we have noted that this occured earlier in the day around 11am on Saturday. We are continuing our investigation."