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Published byRosamond Ross Modified over 9 years ago
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MPPC mass check Hidetoshi OTONO
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Change point ADC Gate width : 6ns => 35ns Gain mesurement without LED
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MPPC Relay MPPC Relay MPPC Relay HV Adapter DC board RS232C Control PC Dark Box CAMAC Menu de OTONO System - Version 4 Ch1 Ch2 ChN - Control HV - Turn ON/OFF relays. - Number of channel can be increased easily. AMP Charge ADC CCNET Ethernet x 63 Scaler x 10 Disc. G.G Disc. 35ns gate Clock Thermal measurement Analysis PC Output register veto AMP NIM Ethernet
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1 p.e rate and 2 p.e rate mesurement threshold MPPC out Disc. out ADC input ADC gate Scaler input 1 p.e rate = scaler rate 2 p.e rate = scaler rate x {(ADC entry – 1 p.e count ) / ADC entry} gain = (1p.e ch – pedestal ch) x ADC least count /(Amp の倍率 x 電気素 量 ) Scaler count isn’t equal to ADC count because of ADC veto.
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#6 のデータ ペデスタル 77.8V 78.3V 78.8V 79.3V 79.8V
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V = Vop @24.65 ℃
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