RFQ - HPGe Gamma-Ray Spectrometer for Coincidence Counting
National Physical Laboratory · United Kingdom
Key facts
- Closing date
- 28 Oct 2022
- Contract starts
- 05 Dec 2022
- Contract ends
- 04 Dec 2023
- Procedure
- Competitive quotation (below threshold)
- Buyer type
- Other public body
Description
The Nuclear Metrology group within the National Physical Laboratory (NPL) provides the traceability to the SI unit of the becquerel for a radionuclide through its primary standardisation facilities. A powerful technique for determining the absolute activity of a radionuclide is by coincidence counting. These coincidence counting systems are comprised of a particle detector and a gamma-ray detector which can be combined to simultaneously measure the disintegration rate and determine the detection efficiency.
The Nuclear Metrology group requires a mechanically cooled high-purity germanium (HPGe) gamma-ray spectrometer to replace an aged LN2-cooled HPGe gamma-ray spectrometer to be part of an upgraded coincidence system. This will provide a high-resolution gamma-ray detection channel that can be used to form coincidences of specific gamma-ray emission with the corresponding particle emission, which is of particular importance for the absolute activity determination of electron-capture radionuclides. Achieving good counting statistics in this gamma-channel is of particular importance and due to the activity limitations introduced by the particle detector a high relative efficiency for the HPGe gamma-ray spectrometer is required.
To this effect, NPL is seeking a 100% relative efficiency n-type HPGe gamma-ray spectrometer with an integrated electro-mechanical cryogenic cooling system.
Additional information: Please ensure that you register on Bravo Solutions (link below) to obtain the documents and submit your interest / intention to bid.
Categories (CPV)
- 38000000 Laboratory, optical and precision equipments (excl. glasses)
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