These graphs show the effect of cleaning the base on the Leakage Current. There is a measurable difference between a cleaned and uncleaned base. We also show the net Anode Current as a function of the difference between PMT+Base Current and the Base Alone Current.
Comparison before and after cleaning the bases (Postscript,
Leakage Current for PMT+Base and the Base Alone (Postscript, GIF).
Net Anode Dark Current (PMT+Base - Base) (Postscript, GIF).
Light Collection Ratio Normalized to Tube 13 (Postscript, GIF)
Light Collection Ratio Normalized to Tube 14 (Postscript, GIF).
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