GBS Elektronik MCA-166 Influence of High voltage on HPGe detector resolution User Manual
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0
1 00 0
2 00 0
3 0 00
40 00
B ia s V olta g e (V )
0
10 0 0
20 0 0
30 0 0
40 0 0
p
e
a
k
p
o
s
it
io
n
P h o to n E ne rgy
4 3 k eV
6 09 ke V
1 33 3 keV
Fig 2: Dependence of peak position (=signal amplitude) on bias
0
10 00
20 00
30 00
40 00
B ia s V olta ge (V )
0 .2
0.4
0.6
0 .8
1
E
ff
ic
ie
n
c
y
(
re
l.
t
o
m
a
x
.
b
ia
s
)
P h o to n E n e rg y
4 3 k e V
6 0 9 k e V
1 3 3 3 ke V
Fig 3: Dependence of detector efficiency on bias.
Conclusions
-The detector tested is only an example. Other detectors may behave different.
-It is worth the effort to test, if a 4 kV detector can also be operated at 3 kV
GBS -Elektronik GmbH, Bautzner Landstr. 22,
01454 Großerkmannsdorf / b. Dresden
Tel.: (0351) 217007-0 Fax: (0351) 217007-21
homepage: http://www.gbs-elektronik.de/
email: [email protected]
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