gemを用いた検出器の開発chibaken/html/sugiyama/development...発表の流れ...
TRANSCRIPT
-
GEM
2
-
GEM
-
1.2.3.
-
X
()
-1/2-
-
-
-
7 410 1 3 25 0 7 4
3 2
6 1 3 43 0 1 23 1 3 12 0 1 1
2.7922.310
4.78
0.765
Li MeVB n
Li MeV
Li n H MeV
He n H p MeV
+ ++
+ ++ + +
+ + +
3He
3840b
940b
5330b
-
3He
-3He--
50%~100%
-
--
5mm~1cm-
-
GEM
1.GEM2.GEM3.
-
GEM
GEM(Gas Electron Multiplier)-
-GEM
-GEM
10cm
10cm
-
-GEM
GEM
140 m
50 m
5 m
5 m
Cu
Polyimide
-
-GEM
-
-
GEM
-
GEM
GEM10B7 4
10 1 3 25 0 7 4
3 2
2.7922.310
Li MeVB n
Li MeV
+ ++
+ + 94%6%
7 73 3 0.48 ( )Li Li MeV
+ 4He or 7Li
10B
Polyimide4He or 7Li
-
GEM
GEM10B-10B--
-
4He or 7Li
10B
Polyimide4He or 7Li
-
GEM1-B
GEM2-B
GEM3-Cu
Ar-CO2 gas
2 mm
1 mm
1 mm
1 mm
()
3He
ED =1.5kV/cmVGEM =233V(B-GEM)
ET =1.5kV/cmB-GEMVGEM =520V(100GEM)
EI =6.5kV/cm
ED =1.5kV/cmVGEM =233V(B-GEM)
ET =1.5kV/cmB-GEMVGEM =520V(100GEM)
EI =6.5kV/cm
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1.2.3.
-
Test chamber
Water
1MeV10meV Energy (eV)
252Cf (=2.14MeV)
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Test chamber
Water
1Me V
10meV Energy (eV)
252Cf (=2.14MeV)
0
200
400
600
800
1000
0 2 4 6 8 10
Water depth(cm)
Counting
rate
in 1
00se
cPad
Foil
-
GEM10B
0
5000
10000
15000
20000
25000
0 0.5 1 1.5 2 2.5 3
Thickness ofBoron in one GEM
The n
um
ber
of th
e c
ounts
1.2m
2.1m
2.4m
:1.2m :1.2m
:1.2m :0.9m
:0.6m :0.6m
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10BGEM
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
0 1 2 3 4 5 6 7 8 9
The number of the Boron-GEM
The n
umber
of th
e counts
F
10B : 0.6m+0.6m
-
Neutron (2.2)
200mV/div
00nsec
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0 100 200 300 400 500 600 700 800 900 1000
The value of ADC
The n
um
ber
of
the c
ounts
of
Co
0
50
100
150
200
250
300
350
400
450
500
The n
um
ber
of
the c
ounts
of
neutr
on
Co-60
Neutron
-
X-Y 1.6mm
5252
83.2mm83.2mm83.2mm
83.2
mm
-
0.8mm
1 6
11 16 21 26 31 36 41 46 51 56 61 66 71 76
S1
S5
S9
S13
S17
S21
S25
S29
S33
S37
S41
S45
S49
S53
S57
S61
S65
S69
S73
S77
9-12
6-9
3-6
0-3
-
1.MUSASIJRR3-
2.NOPJRR3-
3.MINEJRR3-
4.KENSKEK-
KEK
-
1.MUSASIJRR3-
2.NOPJRR3-
3.MINEJRR3-
4.KENSKEK-
KEK
-
MUSASI
MUSASI
1 6
11 16
21 26 31
36 41 46
51
S1
S7
S13
S19
S25
S31
S37
S43
S49
160-180
140-160
120-140
100-120
80-100
60-80
40-60
20-40
0-20
1 4 7
10
13
16
19
22
25
28
31
34
37
40
43
46
49
52S1
S4
S7
S10
S13
S16
S19
S22
S25
S28
S31
S34
S37
S40
S43
S46
S49
S52
150-200
100-150
50-100
0-50
-
MUSASI
1 7
13
19
25
31
37
43
49 S1
S16
S31
S46
1
10
100
1000
10000
100000
1D Liner scale Strip pitch : 1.6mm
2D Log scale
with 0.5mm
pin hole
0
2000
4000
6000
8000
10000
12000
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49
Strip Number
Nu
mb
er
of
Ne
utr
on
s
1.E+00
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1 11 21 31 41 51
-
MUSASI
XY direction16mm pitch
1 4 7
10
13
16
19
22
25
28
31
34
37
40
43
46
49
52S1
S4
S7
S10
S13
S16
S19
S22
S25
S28
S31
S34
S37
S40
S43
S46
S49
S52
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MINE
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 50 100 150 200
Time (20nsec/bin)
Nor
mal
ized
Hit
Cou
nts
50m GEM
1.2m + 0.9m
PNSE0.6700.014freq.1.70600.0006sec
PNSE0.6500.007freq.1.67000.0004sec
chamber
Li scintillater
(R3292)
black
red
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1.2.GEMX
-
2.4m10BGEM-1.2m0.6m+0.6m2.4m1.2m+1.2m
-10cm10cm23cm23cm
-
GEMX
--
-
GEM-
-
GEMX
10
Cu-GEM
Au-GEM
-
GEMX
-10cm10cm23cm23cm
-0.8mm0.4mm
GEM-100mGEM-25mGEM
-
TOF
()
2
-
Background
Direct Beam
HPS 500nm
HPS 200nm
NOP
sample:SiO2
-
MUSASI
1.00 0.98 1.03 1.02 0.99
0.97 0.99 0.98 1.02 0.98
0.98 0.99 1.00 1.00 0.98
0.97 1.01 1.00 1.01 0.98
1.00 1.05 1.03 1.02 0.98
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MUSASI&NOP
-----
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KENS
Belle-CDCPre-amp.
Belle-CDCPre-amp. 7
RPN220730 m
5 mRPN220Dscr.
T0 timing
Fanin-Fanout
Gate Gen.
Coincidence
4ms delayWidth 40ms
CCNET
GATE
BUSY
Gate Gen.GATE
120s delay
VETO
Gate Gen.
ADC 2249A9
GATE
Scaler
CA
MA
C
Trg. Gate
Gated trg.
CLK Gen. (MH1s
Reset
-
KENS
flight time (wave length
msec
3He
2=70deg.
sin2d=
Cd
-
KENS
sin2d=
-
MINE&KENS
--
-
RPMT5HAMAMATSU
ZnS6LiFAg
-
RPMT
-
PMT
0.5mm*0.5mmZnS3040%1mmLi690%100mm
50mm
2cm*0.3mm
1mm
30
GEMGEMGEMGEMGEMGEMGEMMUSASIMUSASIMUSASIMINEGEMXGEMXGEMX 34 35TOFNOPMUSASIMUSASI&NOPKENSKENSKENSMINE&KENSRPMTPMT