「光検出器 MPPC の応答曲線の大量測定 A large amount of measurement of response curve of photodetector MPPC

「光検出器MPPCの応答曲線の大量測定 A large amount of measurement of response curve of photodetector MPPC University of tsukuba Hiroko koike 筑波大学　6/18 小池　博子 1

y：　ADCpulse height x：rotation number of polarizing plate 　　　　（×４．５°） motivation MPPC PMT Shape is sure to fall into disorder if mppc is a saturated condition. The measuring method of the response curve is established. MPPC P.E. responsecurve 2 PMT ADC counts [0]*(1-exp(-1*(x-[1])/[2]))

Newsetup Laser controller 10 ↓　　 14.5 3%penetration

HVcurve PMT ADC counts [0]*pow(x,[1]) PMTHV（V）

Angle dependence in polarizing plate to laser • y：　ADCpulse height • x：rotation number of polarizing plate（×４．５°） A flat area is seen in mppc plot. The saturated condition was able to be confirmed. MPPC PMT

５１ Response curve Mppc p.e. ADC counts

plan • Evaluation of reproducibility by the same sample. 1, Reproducibility of polarizing plate and laser. 2, Reproducibility when mppc is pulled out and opened. ….

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「光検出器 MPPC の応答曲線の大量測定 A large amount of measurement of response curve of photodetector MPPC