User name R. Feuerbach
Log entry time 07:19:42 on July24,2004
Entry number 129524
keyword=Al backgroundSpec. DAQ runs:
Run 1298 was taken at 0.2µA, 1299 at 1µA.
HAPPEX DAQ:
Run 3116 was a 10min run with the Al target, at 35 µA.
The ratio of the rates between the Hydrogen and Al targets for the detectors are consistent between the HAPPEX DAQ and the Spectrometer DAQ, with Det4 having a 50% larger relative rate than the other detectors. This is the lowest-gain PMT. This is also consistent with Bob's observation for the last Al background check.
FIGURE 1
