APD???????????????

1
APD???????????????
(APD??????????????)

• Introduction
• ???????????????APD???
• APD????????????

2
Introduction
??????????????????????????
????????????? ????????????????????????????
??
?????? (???????)
???????? (??p?????????)
?????
????
????????? ?????????????? ?????????
??????????? ??????????????????? ?????????
????????????????? ??????(??????????????????
????????) ???
?????????????
3
?????????????????????????
?????????(WLS)?????????? ???????????????
????????????
WLS?????
????
?
????
????????????????? (????????????)
APD
??????
???????????? ????????????
????????????APD???????
4
APD?????

• ??
• ????(???????????????)???? 90
• ???????(15 mm)??????
• ?????OK
• ?????(1ns)

• ??
• ??????(Gain)???(100?_at_??)
• ?????S/N??????

APD??????????!
5
APD????????
????? ?????????
????????? ??????
??? (???????)
???
??
??
???
???
n?
p?
???
APD??????? 1.pn???????????????????????????
? ??????????????????????? 2.?????????
???????????????? ?
??????????????????????????(Gain)??? ??????????S/N
?????
6
???????????????APD???
??????????????(3HF?Sci-Fi)
????
???
??
???
????
???????? ??? p-terphenyl 1
3-hydroxyflavone(3HF) 1500ppm
7
??????????????(APD)
??????? ????APD S5343
APD????? vs. ??
??? 1 mmf
APD??? SPL2368 (Sci-Fi??????16 channel)
???1 mmf (1.5 mmf????????SPL2367 )
8
APD?????
-50?
28?
APDS5343 (???????)
??? (nA)
Gain(??????)
??????(V)
9
APD????????
??????????????(Sci-Fi) ???Multiclad 3HF Sci-Fi
??0.75mm????0.66mm ??3m
????
???(???????????????)
????
APD????(?)
90Srß??
3m?Sci-Fi
APD S5343
??????
????? HIC-1576
???? ?????
??????(?)
?????????
10
Sci-Fi????
??????90Srß?? Minimum Ionizing Particle(MIP)???
ß?
x
3m?Sci-Fi ???0.66mm
???(???????????????) ???70
APD
11
???????(????APD??2.37m???????19?)
??????????
APD???28?
-20?
-50?
12
?????APD???
????APD??2.37m??? ??????19?
????()
-50?
0?
-40?
-20?
12?
28?
??????(V)
13
???µ???????(Sci-Fi APD???)
-50????
µ??
Layer -1
?????????
Hamamatsu SPL2368 ???1.0mmf ???1.6mm
Fiber-1
16
Sci-Fi? ???0.66mm
Layer -2
1
16
Layer -3
1
16
Fiber??
?????????
???? 97
14
APD????????????
??????????????????
T. Suzuki et al., NIM A432 (1999) 48?? 8mm?? ?
2mm??????????????? ??????????
????(??????)?????????11
??????????21
??????????0
15
?????????
????? Np
???????????(Gain) M
16
APD????????????????????????????
??????
MIP(???µ??)
????
WLS-Fiber ???Y-8 (1mmf) 2???? ??????
APD????(?)
?????
APD
?????????
??????
?????????
????????????BC-412 100mm100mm4mm? (????????????
???)
APD??? Hamamatsu SPL2367 ???1.5mmf????2.2mm
17
?????????????WLS????????/???????
18
MIP???(????)
APD?????(22?)
?????? Npe90?
Bias 160.9 V ? ??????M310
Number of Events
?????? F5.0 (M 0.28)
ADC Channel
MIP???
Pedestal ?????(????????????????)
19
??????

• ???????????????????(MIP?????????)
• APD???????????(???????Gain??)????
• ???????APD???
• ???APD??????(5mm????)
• ??????????????????????????????
• CERN CMS????????????? 5mm5mm APD?????
• ???????????????APD?????????

20
???????????????
21
???????????ß??Minimum Ionizing Particle(MIP)???
GEANT3???????????
Triggering b-particles
??113 keV s29 keV
Number of Events
560 MeV/c p (MIP)
??110 keV s27 keV
Sci-Fi??????????(keV)
22
IDEAS??????? VA32C (32????)
Gain130 mV/fC