Nuclear radiation
Semiconductor detectors
and Associated electronics

Spectrometric Detection Probes

SDP 500S
SDP 1500
SDP 4000

Spectrometric Detection Probes SDP500S, SDP1500 and SDP4000 are room temperature operating portable devices with high efficiency large volume CdZnTe quasi-hemispherical detectors. The detection probes are designed for application in an equipment for measurements and analysis of gamma-radiation spectra. The detection probes consists of the CdZnTe detector and charge sensitive preamplifier mounted inside of a sealed cylindrical case with permanent attached cable. Due to its small dimensions and weight the detection probes are convenient for placement in hard for measurements places. The detection probes is powered and connected to the recording equipment by a radiation-resistant connecting cable with maximal length up to 50 m.

Features

  • High efficiency
  • High energy resolution
  • Room temperature operation
  • Small dimensions and weight

Applications

  • Gamma-radiation spectroscopy
  • Portable and field spectrometers
  • Environmental monitoring
  • Nuclear industry
  • Home land security

Specifications

Spectroscopy performance

Detector Probe head dimensions, mm Detector Volume, cm3 Bias Voltage, V Energy Resolution (FWHM) at 662 keV, %* Peak-to-Compton Ratio at 662 keV*
SDP 500S ∅ 24 x 58 0.5 ≤ 1500 < 2.5 > 4.0
SDP 1500 ∅ 32 x 58 1.5 ≤ 2500 < 3.5 > 4.0
SDP 4000 ∅ 40 x 58 4.0 ≤ 3000 < 4.0 > 4.0

Basic

  • Detector type CdZnTe quasi-hemispherical detector
  • Detector high voltage polarity positive
  • Output signal polarity positive
  • Output impedance 50 Ω
  • Output signal rise time < 150 ns
  • Conversion coefficient > 0.2 mV / keV
  • Integral nonlinearity (60 keV … 1.3 MeV) < 0.4%
  • Range of recommended operation temperature 0 to 40 °C
  • Shift peak position in range of recommended operation temperature < 0.04% / °C
  • Shift peak position for 8 hours of continuous operation < 0.2%
  • Power requirements + 12 V, 18 mA; - 12 V, 13 mA
  • Connector** type LEMO FGG.2B.704.CLAD62
  • Typical connecting cable length*** 0.3 m
  • Environmental protection IP65


* measured at room temperature
** other connectors types are available
*** other connecting cable lengths up to 50 m are available

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