2002 RUN - some rings from online displayC4F10
low intensity beam, 93 % C4
(run 20319, PDs @ 2050V,
read-out thresholds at 3 sigmas of noise distributions):
standard intensity beam, 68 % C4:
(run 22312, PDs @ standard V,
read-out thresholds at 2 sigmas of noise distributions):