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User name M Friend
Log entry time 11:41:21 on June 5,2010
Entry number 324695
keyword=Compton rates stripchart
Compton rates with the high discriminator threshold are 23kHz/uA laser off and 35.5kHz/uA laser on, HV=-1900, photon detector centered on the photon beamline. The low threshold rate is 276kHz. Since the PMT seems okay and I can see a clear difference between laser on and laser off, we will try to run like this.