IAC-QDC Measurements

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09/18/13

Detector voltage is 2.8, 3.4 kV for cathode and GEM. filter Amp. (x4 level 6) is used for amplify the GEM's output, ch#5 is used as an ADC input and ch# 31 in TDC


Run Number Start time End time Notes
6075 12:39:16 13:19:33 shutter open 6075 tdc gem signal.png 6075 qdc gem signal.png
6077 13:34 :37 14:19:05 shutter close, pmt is connected to ch#11 qdc and ch#27 tdc 6077 qdc gem signal.png 6077 tdc gem signal.png 6077 tdc pmt signal.png


10/03/13

Detector voltage is 2.8, 3.4 kV for cathode and GEM. filter Amp. (x2 level 6) is used for amplify the GEM's output, ch#5 is used as an ADC input.

Run Number Start time End time Notes
6220 17:34:47 17:55:48 shutter close N = 0.000793021 6220 adc sh close.png
6221 17:57:08 18:03:52 shutter close V_GEM= V_cat but still there are two peaks. N= 0.002475248 6221 adc sh close.png
6222 18:20:48 18:21:04 shutter open V_GEM= V_cat but still there are two peaks.high noise rate 14 kHz 6222 adc sh open.png



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