Status report of MPPC mass measurement
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Status report of MPPC mass measurement 15/20 2007/Jan/30 Shinshu Univ. HE lab. M2 Takashi Tsubokawa 1 / 1/4 • ADC measurement •Threshold curve measurement
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15/20. Status report of MPPC mass measurement. ADC measurement Threshold curve measurement. 2007/Jan/30 Shinshu Univ. HE lab. M2 Takashi Tsubokawa. 1/15. 1/4. Measurement setup. Gate generator. LED Driver. Coincidence. Clock Generator. Thermo-static chamber - PowerPoint PPT Presentation
Transcript of Status report of MPPC mass measurement
Status report of MPPC mass measurement
15/20
2007/Jan/30
Shinshu Univ.
HE lab. M2
Takashi Tsubokawa1/15
1/4
• ADC measurement•Threshold curve measurement
Gain
Noise rate
ADC
Thermo-static chamber (kept at 15 oC)
Clock Generator Gate generator
16chASD
Discri Scaler
Output register
10chMPPCboard
Bias voltage
MPPC
LED
LED Driver
470nm
MPPC
Coincidence
Measurement setup
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Control PC
One channel on the board is kept as reference
FPCB
・・・
19/20
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Measurement time (data taking)
Gain measurement Change MPPCs ,,,,,,,,,,,,,,,,,,,,,,,,2min Stabilize temperature ,,,,,,,,,,,,,,,,,,,,,,,,5min ADC data taking ,,,,,,,,,,,,,,,,,,,,,,,,3min
Sum:10min / 9MPPC(1 FPCB sheet) Noise rate measurement
Change MPPCs ,,,,,,,,,,,,,,,,,,,,,,,,2min Stabilize temperature ,,,,,,,,,,,,,,,,,,,,,,,,5min Discriminator curve data
taking ,,,,,,,,,,,,,,,,,,,,9min Sum:16min / 9MPPC(1 FPCB sheet)
All:26min / 9MPPC(1 FPCB sheet)
Progress Re-measurement have been finished 600 MPPCs have been delivered
on Feb-8 2007 351 MPPCs with FPCB 249 plastic-package MPPCs
351 MPPCs with FPCB have been measured.
Analysis of re-measurement and 351 MPPCs measurement is on going.Analysis will be done as soon as possible
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