GEM Series Coaxial HPGe Detector
Product Configuration Guide
15
Endcap Model (dia. mm)
-70
-76
-83
-95
-108
% Efficiencies available in this
endcap size
0–35
25–45
25–65
60–110
120–150
Dim.
Unit
Tol.
A
mm
(in)
0.3
(0.01)
70
(2.75)
76
(3.0)
83
(3.25)
95
(3.75)
108
(4.25)
B
mm
(in)
0.3
(0.01)
101
(4.0)
101
(4.0)
101
(4.0)
114
(4.5)
127
(5.0)
BB
mm
(in)
0.3
(0.01)
85
(3.4)
92
(3.6)
98
(3.9)
111
(4.4)
124
(4.9)
C
mm
(in)
5
(0.2)
144
(5.7)
157
(6.2)
157
(6.2)
182
(7.2)
182
(7.2)
CC
mm
(in)
5
(0.2)
145
(5.7)
158
(6.2)
158
(6.2)
183
(7.2)
183
(7.2)
D
mm
(in)
5
(0.2)
243
(9.6)
256
(10.1)
256
(10.1)
281
(11.1)
281
(11.1)
ICS-LL
mm
3
Specify length. Choose from 051, 064, 076, 089, 102, 114, 127, 140,152,
165, 178, 191, 203, 216, 229, 241, 254, 267, 279, 292, or 305
ICS-LLE
mm
3
Specify length. Choose from 025, 031, 037, 050, 063, 075, 088, 101, 114,
126, 139, 152, 164, 177, 190, 202, 215, or 228
Streamline GEM Detector Dimensions for ICS Integrated Cryocooling System
• Dimensions are for reference only and subject to change.
• If dimensional constraints are critical, contact the factory.
GEM Endcap Diameter and Window
Note that there is an “overlap” of coaxial detector efficiency versus endcap diameter. For example, a 25–35% efficiency detector, depending on diameter, may
fit in either a -70, -76 or -83 size endcap. The endcap size must be specified by adding the endcap Model (-xx) to the Detector Model (e.g., GEM25-76 or
GEM25P4-70).
If this, or any other dimension is critical, please specify at time of order.
Endcap Model
(dia. mm)
-70
-76
-83
-95
-108
Endcap Diameter (in)
2.75
3.00
3.25
3.75
4.25
Efficiency
0–35%
25–45%
25–65%
60–110%
120–150%
Thickness of Al Window
1 mm
1 mm
1 mm
1.5 mm
1.5 mm
Thickness of CF Window
.9 mm nominal
.9 mm nominal
.9 mm nominal
.9 mm nominal
.9 mm nominal
