|
|
For gamma-
radiation detection and spectrometry, assemblies having scintillation crystals and a
photomultiplier tube (PMT) assembled in a hermetically sealed body have been developed and
are now in production.
Such assemblies are produced in different designs depending on of the size of
scintillators and PMT as well as on the intended application and working conditions
(general-purpose, heat and vibration resistant, spectrometric, etc.)
The basic types of assemblies and scintillator dimensions are presented in the Tables. |
|
|
|
| Note: The assemblies can be provided with
PMTs of other types than specified. PMTs supplied by the customer can be used in the
assembly.
We develop custom-made assemblies according to customers' specification. The assemblies
can be produced in low-background version.
The assemblies can be provided with built-in voltage divider and preamplifier. |
|
137Cs spectrum for a NaI(Tl) 63x63 mm.
Assembly. |
|
60Co spectrum for a NaI(Tl) 63x63 mm.
Assembly. |
|
137Cs spectrum for a NaI(Tl) 150x100 mm.
Assembly. |
|
4.43 MeV spectrum for a NaI(Tl) 150x100 mm.
Assembly. |
|
Assemblies.
Assembly
type and nomenclature |
Scintillator
dimensions [mm] |
Intended applications |
diameter
|
height
|
SBN.01 |
63 |
570 |
Detection of weak radiation in
the energy range from 20 to 200 keV |
SBD.03 |
63 |
63 |
gamma - radiation detection and
spectrometry in the energy range from 0.1 to 3.0 MeV |
SBN.04 |
30 |
70 |
Well logging |
SBN.05 |
50 |
150 |
–//– |
SBN.05 |
50 |
250 |
–//– |
SBN.06 |
100 |
100 |
gamma - radiation spectrometry in
the energy range from 50 to 5000 keV |
SBN.08 |
150 |
100 |
–//– |
SBN.09 |
40 |
40 |
gamma - radiation detection and
spectrometry in the energy range from 0.01 to 3.0 MeV |
SBN.10 |
54 |
250 |
Well logging |
Ruggedized detectors.
Detector
type and nomenclature |
Scintillator
dimensions [mm] |
Service
temperature range [°C] |
Allowable
vibration characteristics (frequency
range, acceleration) |
SDN.17 |
? 10x10 to ? 40x80 |
-50 to +150
|
1-50 Hz, 30 ms-2
1-80 Hz, 50 ms-2 |
SDN.52 |
dia.18 to 73, height 18 to
72 |
-60 to + 60 |
1-200 Hz, 50 ms-2
|
SDN.11 |
dia. 18x160 |
-50 to + 120 |
1-50 Hz, 30 ms-2
|
D.115 |
dia. 10 to 140, height 10
to 70 |
-40 to + 140 |
1-2000 Hz, 200 ms-2
|
D.116 |
dia. 16 to 40, height 25 to
50 |
-40 to + 140 |
1-2000 Hz, 200 ms-2
|
VTR-24 |
dia. 40x40 |
-60 to + 70 |
1-2000 Hz, 200 ms-2
|
VTR-24-1 |
dia. 40x20 |
-60 to + 70 |
1-2000 Hz, 200 ms-2
|
SDN.18 |
dia. 18x160
? 30x160 |
-50 to + 150
|
1-300 Hz, 100
ms-2 |
SDN.132 |
dia. 30x70 |
-50 to + 225 |
20-5000 Hz, 500 ms-2
|
|
The detectors and assemblies
for geophysical (well logging) and special applications can be produced in ruggedized
versions. These detectors operate under high temperature and mechanical load conditions. |
|