The document discusses various radiation detectors and their specifications. It provides sensitivity data for detectors like the Monitor 4, Monitor 4EC, ALOKA NaI, and Polimaster PM1703. Background radiation levels and detection efficiencies are provided for different radiation types and energy levels. Operational information is also given on setting the range switches and using the various instruments to detect radiation.

1. vs
KEK
2011 6 19

2. 2011 6 19

3. β
γ m
2011 6 19

4. β γ
•γ (
β
•β
.
•β γ
→β /γ
2011 6 19

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2010KEK
β
(β γ
γ 1mm
γ
2011 6 19

6. 2011 6 19

7. GM
2011 6 19

8. GM
• :α β
β
α
β
• γ
γ
β
γ
β γ
2011 6 19

9. 2011
6
19
β
γ
γ
ALOKA
DESCRIPTION
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Monitor 4
F]!]>!H
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HB)(&'.7$EQN
30
OPERATION
?;$N#2&*#$)6*'('-$&'$1&6*$('+)*6%#')C$('+).77$.$O$I&7)$.7M.7('#$0.))#*1;$G2$.$0.))#*1$(+$.7*#./1$('+).77#/C$)6*'$)"#$('
+)*6%#')
&'$.'/$+9():"$)"#$*.'-#$+9():"$)&$)"#$0.))#*1$B&+()(&'$('/(:.)#/$01$)"#$0.))#*1$(:&'$&'$)"#$&'P&22$+9():";$$N.
))#*1
:&'/()(&'$9(77$0#$('/(:.)#/$&'$)"#$%#)#*;
K;$Q#)$)"#$*.'-#$+9():"$('$)"#$R?$B&+()(&';$G2$)"#$%#)#

10. • • β γ
β γ γ
β
β
http://
www.utsunomia.com/y.utsunomia/
geiger.html
2011 6 19

11. 1/3
(SW83A REN200)
(@_@)
REN200
→ γ ?
2011 6 19

12. (CPM) (Sv)
2011 6 19

13. cpm
•
γβ
• CPM:
• Gy( Sv x
• =Sv
• (γ )x 137 γ
Sv
• γ
• β Sv
• β
•
2011 6 19

14. γ
( (La Br)
Cs137
K40
Cs134
2011 6 19

15. 2011
6
19
!"
#!!"
$!!!"
$#!!"
%!!!"
%#!!"
&!!!"
&#!!"
'!!!"
!"
#!!"
←212Pb 0.283MeV
←214Pb 0.295MeV
←214Pb 0.352MeV
$!!!"
208Tl 0.583MeV
←e+
134Cs 0.605MeV
$#!!"
← 214Bi
0.609M
137
eV
← Cs 0.6
62MeV
←134Cs 0.796 MeV
%!!!"
←228Ac 0.911 MeV
←228Ac 0.969 MeV
%#!!"
←214Bi 1.120 MeV
&!!!"
←214Bi 1.281 MeV
γ
&#!!"
K40
← 40K1.46MeV
'!!!"

16. γ
γ
• Cs 134 CS 137
• γ Cs 137 γ Sv
CPM Sv=( x (CPM)
•
γ
RAE
2011 6 19

17. (CsI
DoseRAE 2
Dose RAE 2
+
Polimaster
1703M
2011 6 19

18. β Sv
γ β
• Sv γ β
β
• γ β γ
• β
2011 6 19

19. β Sv
Sr 90 (β
Inspector
β
2.7μSv/h
ALOKA
TGS 121 PM1207
0.65μSv/h γ
0.09μSv/h
Gamma Scout
2011 6 19

20. β
β
Inspector Gamma Scout α
2011 6 19

21. β γ
•β
•γ
β
γ
2011 6 19

22. 2011 6 19

23. CPM
BG(cpm
cpm/μSv
Inspector 334 γ 0.01MeV 10
β 0.05MeV
Monitor4 100 5-25
γ 0.01MeV
β 0.2MeV
Gamma Scout 142 <10
γ 0.03MV
β 0.2MeV γ
108 10-14
0.02MeV
( BG )
0.1
2011 6 19

24. • BG http://park30.wakwak.com/
2011/6/10
120CPM= 1μSv
2011 6 19

25. 0.1μSv
15cm 0.6μSv/h
30cm 0.2μ
0.2
60cm 0.1μ
0.1
0.14
2011 6 19

26. •
γ
• ALOKA NaI 0
• Inspector ......0.05μ Sv
• RADEX,MKS-05 ....0.04μSv
• RADEX (SMB-20)
60CPM
10~20)
2011 6 19

27. <:="/'>,/<""2-7,?:"@00A&B:"9==="CD4>/E>-A"F&A"C(17+/"9GH:"I)(A'J",&/0()1$27&)"71"&)%J"(FF(,27L("2-A&+'-"2-(
17.(8$%%"&F"2-("34"MA(F(A"7%%+12A$27&)"9N:
MONITOR 4 Energy Sensitivity:
O(2(,21"$%0-$".&8)"2&"<:;"4(PQ"2J07,$%".(2(,27&)"(FF7,7(),J"$2"G:R"4(P"71"'A($2(A"2-$)"S=T:""
O(2(,21"5(2$"$2";="?(P"872-"2J07,$%"G;T".(2(,27&)"(FF7,7(),J:""
γ
O(2(,21"5(2$"$2"9;="?(P"872-"2J07,$"H;T".(2(,27&)"(FF7,7(),J:""
O(2(,21"'$//$"$)."B!A$J1".&8)"2&"9="?(P"2J07,$%
2-A&+'-"2-("87).&8K"U="?(P"/7)7/+/""2-A&+'-"2-(
Graph 1
,$1(:"M3E@D#"9N:"V&A/$%"5$,?'A&+)."71";!<="CD4:"
• γ
MONITOR 4EC Energy Sensitivity:
γ
6-("()(A'J"A(10&)1("2&"'$//$"2-A&+'-"2-(".(2(,2&A
17.(8$%%"71"F%$2"2&"872-7)"WR9T"&A"!<RT"&L(A"2-("A$)'("&F
U="?(P"2&"9=="?(PK"$)."872-7)"WG;T"&A"!9HT"&L(A"2-(
• ALOKA NaI
A$)'("&F"9=="?(P"2&"!"9:G"4(P"MA(F(A(),(.""2&"C1!9GHN:"
O(2(,21"$%0-$".&8)"2&"<:;"4(PQ"2J07,$%".(2(,27&)
(FF7,7(),J"$2"G:R"4(P"71"'A($2(A"2-$)"S=T:""
O(2(,21"5(2$"$2";="?(P"872-"2J07,$%"G;T".(2(,27&)
(FF7,7(),J:""
•
γ
O(2(,21"5(2$"$2"9;="?(P"872-"2J07,$%"H;T".(2(,27&)
(FF7,7(),J:"
Sv γ
O(2(,21"'$//$"$)."B!A$J1".&8)"2&"9="?(P"2J07,$%"2-A&+'-"2-("87).&8"M)&)!,&/0()1$2(.NK"U="?(P"2-A&+'-"2-("17.(8$%%:
V&A/$%"5$,?'A&+)."71"$00A&B:";!<="CD4: Polimaster PM1703
Operating Range- Monitor 4 and Monitor 4EC:
NaI
=!;="/E>-A"$)."=!;=K==="CD4K"&A"=!;=="!XL>-A"$)."=!;="/E>-A 0.10 0.22 0.60
Range Switch for the Monitor 4, Monitor 4EC:
CsI(Polimaster PM1703 ) A
Y9K"Y9=K"Y9==:""E(F(A"2&",&//&)"10(,7F7,$27&)1"F&A"/&A(".(2$7%1 0.14 0.24 0.62
B 0.13 0.24 0.55
2011 6 19

28. • >0.2
• β
• β
•
•
•
• [ ]
2011 6 19