Nuclear radiation
Semiconductor detectors
and Associated electronics

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

  • Fresh and spent nuclear fuel verification
  • Nuclear waste treatment facilities
  • Nuclear power plant monitoring
  • Field and industrial gamma-spectrometry
  • Application in places of difficult access
  • Portable instruments

Specifications

Spectroscopy performance

Detection Probe Detector Volume, mm3 Energy Resolution (FWHM) at 662 keV, keV Peak-to-Compton Ratio at 662 keV
Standard Grade Super Grade Standard Grade Super Grade
SDP 310/Z/01 0.8 … 1.5 ≤ 20 n/a ≤ 1.3 n/a
SDP 310/Z/05 4.0 … 6.0 ≤ 22 ≤ 10 ≤ 1.6 ≥ 2.5
SDP 310/Z/20 10 … 20 ≤ 22 ≤ 10 ≤ 1.6 ≥ 2.5
SDP 310/Z/60 50 … 60 ≤ 25 ≤ 15 ≤ 1.8 ≥ 2.5

Basic

  • Conversion coefficient > 0.1 mV / keV
  • Integral nonlinearity (60 keV … 1.3 MeV) < 0.2%
  • Range of recommended operation temperature 0 to 40 °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

Detector

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

Output

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

Dimensions

  • Length of removable probe 90 mm
  • Diameter of removable probe 8.2 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 20 m

Connectors

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

Usage

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