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User name Pitt
Log entry time 18:55:09 on January 8,2011
Entry number 213176
keyword=Measurement of Hall B leakage
These are screen shots of the downstream lumi rates. The first picture is with Hall C laser blocked but Hall B on at 120 nA. The second picture is with both Hall B and C off. I will follow up with a log entry with the trigger scintillator numbers and a conclusion about the amount of leakage.
This was done with a chopper slit setting of 12.12, which is the slit setting we have been using for getting 25 nA of beam.
FIGURE 1
FIGURE 2
