Avalanche Photodiode ????2???????? - PowerPoint PPT Presentation

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Avalanche Photodiode ????2????????

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Title: Avalanche Photodiode ????2????????


1
??????????????????2??????????
??????
  • ????? ?? ??

2
??
  • ??????????????(APD)????
  • ???????????????
  • APD 4?????????????
  • ?????
  • 32ch APD array????
  • ??????

3
APD???
APD
  • ??????????????????????????(????)
  • ????????????????????

pp n i n
h?
??
avalanche
E
4
APD???
????
  • ?????
  • ???????
  • ????X???????? ?????????
  • ???????
  • ???????????????

100 50 0
APD
PMT
  1. 400 600 800 1000 1200
    ?

nm
5
?????????
  • APD??2????
  • APD??????????X?g???????????????????????????????
    ?????? ?????????????????????????????????????????

6
???????????????
  • ??????? ?APD??????????????? ? X or
    g????????????

1
2
APD1
APD2
X???

??????
3
4
APD4
APD3
7
????1(???????????)
  • 5cm?1cm? CsI(Tl) 5mmAPD x 4 ?4ch ??????????
  • ?????????????(KEK)?? 70keV 0.1mmf
    ?????????????1cm??? 25????????

5cm
5mm
8
??1??????
BeamLine
9
??1???(1)
????????????!
5cm
2??????
10
??1???(2)
  • 515mm (FWHM) ? ???
  • ????? 4cm???? ??????1/3
  • ????????????

x????????
11
????2(?????)
  • ??????????????? (5x5x20mm) Pb???(2mm?)??????????
    ???????????? Klein-????
    ? ?90????????

?
?????
??????
?
????????????(???)
??
APD
CsI??
12
??2???
45??
Q0.14
?????????????????????????
????
135??
Q0.23
??????????????????????!
13
????3(APD array)
  • 32ch array? APD??????????????????????????APD???
    ???????
  • 55Fe?5.9keV X???????APD??????????????????

array? APD1.6x1.6mm 32?
32ch preamp
14
??3???
?????????????????
15
?????
APD array
  • 32ch array? APD ?????????(VA / TA????)
  • ????????????5ch ??????????
  • ?????????????????

????
CsI
??????
VA / TA
16
???????????????
?????????
?????????
17
APD???
  • ??????????????????????????????
  • ???
  • ??????????????????X???????????
  • ????????????
  • ??????X??????NeXT??APD???????

18
??1??????
VME ADC1?
Gate??
ADC2?
ADC3?
??
ADC4?
?????
CsIAPD
?????
??? ???
?? ???
?????????
19
??
20
??
21
???????????
??????????????????????????????????????
Xorg
????
e-
22
??????????????????????!
45??
135??
????????
23
?????????????
  • X?g?????????????????????????????
  • ????????????????????? ????????
  • ???????????????????????????????????
  • ??????????????????? ???????????
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