Co-planar grid gamma ray detectors for radiation detection and identification

A portable high-resolution CZT detector for nuclear spectroscopy. The compact size and rugged design allows their use in harsh or restrictive environments.

Robust small CZT gamma ray radiation detectors

Co-planar grid gamma ray detectors for nuclear spectroscopy

Available in standard sizes of 10x10x10mm3 and 10x10x7.5mm3. Other sizes available in limited quantities.

The Portable CZT EV-CPG detector is made possible by recent advances in the CZT gamma detector manufacturing processes. These large-volume CZT detectors have the electrode geometry and charge collection efficiency to offer the high resolution necessary for nuclear spectroscopy.

The CPG gamma detectors are ideal for applications requiring high efficiency, high resolution, room temperature operation. Their compact size and rugged design allow their use in harsh or restrictive environments.

Principle of Operation

The application of the CPG electrode structure creates an electron-only collection device that allows for a reduction in tailing caused by the trapping of charge in the CZT crystal. For this technique, the anode is divided into two sets of connected electrode grids, with each set coupled to an independent preamplifier. The preamplifiers are then connected to a differential amplifier and the resulting signal is fed to an external shaping amplifier.


  • Homeland Security
  • Remote portable sensors
  • Isotope identification
  • Lab-based gamma-ray spectroscopy
  • Health Physics
  • Medical diagnostics


  • Excellent energy resolution
  • Small size
  • Robust construction
  • Available in a range of sizes: tell us what you need

Robust and small the EV-CPG is perfect for slipping into tight spaces including pipework. It is a component that can be built into your own devices and systems. Tell us what you need using the query form below.

Full technical spec downloads

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For further product information, information on customisations or to request a quote, click the button below to send us a message.

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