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MPPC mass check

MPPC mass check. Jan9/2007 Hidetoshi OTONO. Our plan for mass check with relays. Control PC. RS232C. HV. DC board. PCI bus. ＭＰＰＣ. relayOFF. ＭＰＰＣ. relayOn. relayOFF. 測定対象. AMP. ADC. ＭＰＰＣ. relayOFF. ＭＰＰＣ. relayOFF. PC System. Analysis PC. NFS. Control PC. CAMAC CC/NET.

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MPPC mass check

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  1. MPPC mass check Jan9/2007 Hidetoshi OTONO

  2. Our plan for mass check with relays Control PC RS232C HV DC board PCI bus ＭＰＰＣ relayOFF ＭＰＰＣ relayOn relayOFF 測定対象 AMP ADC ＭＰＰＣ relayOFF ＭＰＰＣ relayOFF

  3. PC System Analysis PC NFS Control PC CAMAC CC/NET RS232C DC board HV PCI bus RELAY

  4. Menu de OTONO System - Version ４ Thermal measurement CAMAC Dark Box NIM Clock Scaler Ch1 MPPC Relay Ch2 MPPC Relay AMP AMP Disc. • Number of channel • can be increased easily. x 63 x 10 Output register G.G veto ChN MPPC Relay Disc. • Turn ON/OFF relays. Charge ADC 6ns gate DC board HV ADC input Control PC RS232C Adapter Ethernet - Control HV CCNET Analysis PC Ethernet

  5. 1 p.e rate and 2 p.e rate measurement MPPC out threshold 1 p.e ADC input noise 2 p.e Disc. out Scaler input ADC gate scaler rate = scaler counts / clock counts 1 p.e rate = scaler rate x {(whole counts – noise counts) / whole counts} 2 p.e rate = scaler rate x {(whole counts – noise counts – 1 p.e counts ) / whole count} These counts are calculated from ADC histogram.

  6. #12 Vop = 78.05 V Noise count Noise 1 p.e count 2 p.e count 1 p.e 2 p.e 3 p.e count 3 p.e 1 p.e rate = 57.4 kHz 2 p.e rate = 1.24 kHz Our measurements are about the same values at another University …..

  7. #12 Vop +1.5V = 79.55V What are these ?? Anyway our measurements are about the same values at another University ….. We need more information of sample MPPCs for comparison.

  8. Requirements for measurement • -Relay • OMRON • G3VM-41LR10 • HV for MPPC • KIKUSUI • PAN110-1.5A (HV) • PIA4810 (Adapter) • OP01-PIA (Control Board) • TU02-PIA (for HVreadback) • Amp • HAMAMATSU • C5594-44 • DC board • CONTEC • DO32-B(PCI)H • ADC • LeCroy • 2249A (Charge ADC) • -Thermal measurement • Agilent 34970A (with Pt100)

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