Noise studies
From GlueXWiki
Noise studies - scope traces for ch16, which shows the largest amount of 4MHz pickup. The left hand side plots also show some cosmics.
After connecting the preamp ground to the preamp end of the cable shielding
The traces below also show ch16 at a much smaller timescale, 20 μs/div, with the HV supply to the CDC prototype on and off.
HV on (preamp ground & cable shielding connected) The envelope oscillates at about 27kHz.
HV off (preamp ground & cable shielding connected)
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