Source: https://tendernation.io/opportunities/01a13c92-9701-7153-8a1e-2efedf216883/rfq-hpge-gamma-ray-spectrometer-for-coincidence-counting closed GB negotiated without publication procedure Suitable for SMEs # RFQ - HPGe Gamma-Ray Spectrometer for Coincidence Counting [National Physical Laboratory](https://tendernation.io/buyers/national-physical-laboratory) Estimated value Not stated Published 14 Oct 2022 Deadline Closed 28 Oct 2022 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender 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. Read full description ## CPV classification Laboratory, optical and precision equipments (excl. glasses) Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/5936bbf8-3cab-4718-8b1a-fb27efb85d2e) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. 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