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

5. γ
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
!"#$%&'()&*$+#'+#+$(&'(,('-$*./(.)(&'$01$%#.'+$&2$.$34$53#(-#*$46#77#*8$)60#$9()"$.$)"('$%(:.$9('/&9;$5<&
)#=$!"#*#$(+
'&$9('/&9$&'$)"#$4>?@8;$!"#$)60#$(+$#':7&+#/$('+(/#$)"#$('+)*6%#');$A"#'$.$*.1$&*$B.*)(:7#$&2$(&'(,('-$*./(
.)(&'$#')#*+
&*$B.++#+$)"*&6-"$)"#$)60#C$()$(+$+#'+#/$#7#:)*&'(:.771$.'/$/(+B7.1#/$01$.$*#/$:&6')$7(-");$A"#'$)"#$+9():"$(
+$('$)"#
DEFGH$B&+()(&'C$)"#$('+)*6%#')$9(77$.7+&$0##B$9()"$#.:"$*./(.)(&'$#I#');$D0&6)$J$)&$KJ$:&6')+$.)$*.'/&%$('
)#*I.7+
5/#B#'/('-$&'$1&6*$7&:.)(&'$.'/$.7)()6/#8$:.'$0#$#LB#:)#/$#I#*1$%('6)#$2*&%$'.)6*.771$&::6**('-$0.:M-*&6'
/$*./(.)(&';
5cm
Illustration 1
(end window
N]]^]
34$]<F$AG<FHA
54>?@_$'&$9('/&98
HUU_H<_DEFGH$QAG!>Y
>HE<! `G3Y!
D<3]$QAG!>Y$54>?@_$R?C
R?SC$R?SSC$R?SSS8
4]!]
Y]DF^YH<]
Monitor 4
F]!]>!H
5+(/#9.778 D<F$^E`Q]
HE!^E!
ND!!]a FHH
HB)(&'.7$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