mppc a large amount of measurement of response curve of photodetector mppc
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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

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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 - PowerPoint PPT Presentation


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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. University of tsukuba Hiroko koike 筑波大学  6/18 小池 博子. 1. y :  ADC pulse height x : rotation number of polarizing plate     ( × 4.5 ° ). motivation. MPPC. PMT.

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mppc 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

motivation

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]))

new setup
Newsetup

Laser controller

10

↓  

14.5

3%penetration

hvcurve
HVcurve

PMT

ADC

counts

[0]*pow(x,[1])

PMTHV(V)

angle dependence in polarizing plate to laser
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

slide6
51

Response curve

Mppc

p.e.

ADC counts

slide7
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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