光半導体素子MPPC(14.4k及び90k - Hiroshima U...概要 MPPC(Multi-Pixel Photon Counter)...

14.4k 4 2
390kMPPC
PWO()MPPC
1.7.3 Gate Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 0p.e. . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4 1p.e. . . . . . . . . . . . . . . . . . . . . . . . . 22
3.5 2p.e. . . . . . . . . . . . . . . . . . . . . . . . . 23
3.6 . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.7 . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.8 . . . . . . . . . . . 25
3.11 14.4k 90k . . . . . . . . . . . 27
LHC(Large Hadron Collider)
LHC

1.1
1.1: [g/cm2] [cm] [cm] [ns] [NaI]
PWO 8.28 0.89 2.0 5∼15 0.01
NaI 3.67 2.59 4.5 250 1.00
CsI 4.53 1.85 3.8 565 0.40
BGO 7.13 1.12 2.4 300 0.15
1.4: PWO[1]

-pn

-

---
1.6 MPPC
1.6.1
(80V) (105106)
APD

1.6.2
h1_adc_12572_dark_3
ADC[ch] 100 150 200 250 300 350 400
N um
be r
of C
ou nt
1.9: MPPC
TID-20893NIM
CAMAC CAMAC

11
2.2
MPPCMPPC
CSADCMPPC
10C0C−10C−25C
2.1:
p.e. d

Q: [C]
d: [ch]
2.2
ADC[ch] 100 200 300 400 500 600
N um
be r
of C
ou nt
2.3: MPPC
0p.e.
Y ie
P (0) = e−λ = ( N0p.e.
Ntotal )
( Ndark
0p.e.
λ = − ln
Pmeas(0): 0p.e.
Pmeas(1): 1p.e.

MPPC
14.4kNpixel 14400 35%[6]90k
Npixel 90000 10%[5]
18
310×
19
14.4k 4V
Bias[V] 62 64 66 68 70 72
G ai
C°14.4k pixel 25 C°14.4k pixel 10
C°14.4k pixel 0 C°14.4k pixel -10 C°14.4k pixel -25
C°90k pixel 25 C°90k pixel 10
C°90k pixel 0 C°90k pixel -10 C°90k pixel -25
Gain vs Bias
G ai
C°14.4k pixel 25 C°14.4k pixel 10
VGain vs
3.1.2
p.e.
V 14.4k 90k
14.4k 90k 0.5

21
C ha
rg e
R es
ol ut
io n
0.6 C°14.4k pixel 25 C°14.4k pixel 10
0p.e. Charge Resolution
C ha
rg e
R es
ol ut
io n
0.6 C°14.4k pixel 25 C°14.4k pixel 10
C ha
rg e
R es
ol ut
io n
0.6 C°14.4k pixel 25 C°14.4k pixel 10
3
3.1.4
A ve
ra ge
N um
be r
of D
et ec
te d
P ho
to ns
C°14.4k pixel 10
C°14.4k pixel 0
C°14.4k pixel -10
C°14.4k pixel -25
C°90k pixel 25
C°90k pixel 10
C°90k pixel 0
C°90k pixel -10
C°90k pixel -25
3.6:
D ar
k C
ou nt
s R
at e[
M H
C°14.4k pixel 10
C°14.4k pixel 0
C°14.4k pixel -10
C°14.4k pixel -25
C°90k pixel 25
C°90k pixel 10
C°90k pixel 0
C°90k pixel -10
C°90k pixel -25
C .T
1 C°14.4k pixel 25 C°14.4k pixel 10
C.T. or A.P. Rate
3.8:
2.12 p0
3.11 3.11 3.11
14.4kMPPC 0.0190kMPPC
10 3.11
2.6 3.11 0.01 1040.1 105
MPPC

N um
be r
of F
ire d
P ix
el s
14.4k Pixel Low Intensity
intensity ratio 0 0.1 0.2 0.3 0.4 0.5
N um
be r
of F
ire d
P ix
el s
90k Pixel Low Intensity
26
N um
be r
of F
ire d
P ix
el s
14.4k pixel
90k pixel
N um
be r
of F
ire d
P ix
el s
3.11: 14.4k 90k
3 10
14.4k
90kPHOS
MPPC
MPPC

[2] 2005 ⌈ ⌋
[3] 2013 ⌈ MPPC ⌋
[4] http://www.hamamatsu.com/jp/ja/index.html

光半導体素子MPPC(14.4k及び90k - Hiroshima U...概要 MPPC(Multi-Pixel Photon Counter)...

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