Miniature Spectrometric Detection Probe

SDP 310

The Spectrometric Detection Probe SDP 310/Z is a miniature gamma-ray detection device consisting of removable probe and attached cable with connectors. Removable probe contains a single CdZnTe quasi-hemispherical detector and charge sensitive preamplifier placed inside a watertight cylindrical case hermetically connected to a cable. There are few modifications of SDP 310 probes, which differ in used detectors size, spectroscopy performance, cable length and connectors type. These probes have been designed for application in difficult of access places, like fuel rods inside of a fuel assembly or nuclear spent fuel in underwater storing.

Features

Small dimensions and weight
High energy resolution
Room temperature operation
Wide detection range
High efficiency
High countrate capability
Small consumption power

Applications

Gamma-spectrometry
Nuclear material verification
Portable and field spectrometers
Environmental monitoring
Nuclear industry
Home land security
Application in difficult to access places

Specifications

Spectroscopy performance

Detection Probe

Detector Volume, mm3

Energy Resolution (FWHM) at 662 keV, %

Peak-to-Compton Ratio at 662 keV

SDP 310/Z/01

0.8 … 1.5

≤ 2.3

≥ 1.5

SDP 310/Z/05

4.0 … 6.0

≤ 1.5

≥ 2.5

SDP 310/Z/20

10 … 20

≤ 1.5

≥ 2.5

SDP 310/Z/60

50 … 60

≤ 2.0

≥ 3.0

Detector

Type CdZnTe quasi-hemispherical detector
High voltage up to 600 V
High voltage polarity positive

Basic

Conversion coefficient > 0.1 mV / keV
Integral nonlinearity (60 keV … 1.3 MeV) < 0.2%
Range of recommended operation temperature 0 to 50 °C
Shift peak position in range of continuous operation < 0.02% / °C
Shift peak position for 8 hours of continuous operation < 0.2%
Power requirements +12 V, 12 mA; -12 V, 8 mA

Output

Signal polarity negative
Impedance 50 Ω
Signal rise time < 150 ns

Dimensions

Length of removable probe 82 mm
Diameter of removable probe 8 mm
Standard length of connecting cable for
- SDP10/Z 20 cm
- SDP10/Z/LC 4 m and 8 m
Maximal length of connecting cable up to 30 m

Connectors

SDP310/Z 5-pin LEMO connector
SDP310/LC
- low voltage 9-pin connector D9 type
- output BNC
- detector high voltage SHV