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User name A. Camsonne
Log entry time 11:40:08 on November 22, 2009
Entry number 301813
keyword=Compton photon asymmetry with 10.4 cm of CH2 and 2 + 1 mm of lead at 1500 VCurrent fluctuation in the base seems to be ok of the order of 4 uA beam on and off. Waiting for the FADC analysis to complete. Leakage from previous shielding position is much reduced since it is placed about 10 cm closer from the detector. The effect of the CH2 on the low energy background and the additionnal lead bricks needs to more accurately evaluated at higher high voltage a bit later.
A copy of this log entry has been emailed to: rom@jlab.org,souder@jlab.org,paschke@jlab.org,mfriend@jlab.org
Figure 1
