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User name jpchen
Log entry time 19:34:05 on November19,2009
Entry number 301107
keyword=two BCM readings diff by 5 uABCM readings for upstream and downstream BCMs diff by significant amount (~5 uA: upstream is 100.5 uA while downstream is 105.5uA).
Seems MCC reads from the downstream, while the Hall A display is the average of the two readings, taht probably is the reason the beam current we got seems always lower by 2-3 uA.
Maybe it should be re-calibrated? Or at least put some constants to make them consistent?
FIGURE 1
FIGURE 2
