Published date: 10 May 2023
Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.
Contract summary
Industry
Laboratory, optical and precision equipments (excl. glasses) - 38000000
Location of contract
TW11 0LW
Value of contract
£0
Procurement reference
tender_368276/1212010
Published date
10 May 2023
Closing date
22 May 2023
Closing time
3pm
Contract start date
12 June 2023
Contract end date
11 June 2024
Contract type
Supply contract
Procedure type
Open procedure (below threshold)
Any interested supplier may submit a tender in response to an opportunity notice.
This procedure can be used for procurements below the relevant contract value threshold.
Contract is suitable for SMEs?
Yes
Contract is suitable for VCSEs?
No
Description
The National Physical Laboratory (NPL) is the UK's National Measurement Institute and is a world-leading centre of excellence in developing and applying the most accurate measurement standards, science, and technology available.
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. Some radionuclides have radioactive decay rates that make transport from the production site to NPL impracticable. Therefore, primary standardisations need to be performed at or near the production facility and requires a system that can be transported.
The Nuclear Metrology group requires a compact mechanically cooled high-purity germanium (HPGe) gamma-ray spectrometer to be part of portable primary counting 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. This detector will also be used for the assay of the samples for radioactive contaminants and will require excellent resolution.
To this effect, NPL is seeking a compact 60% relative efficiency n-type HPGe gamma-ray spectrometer with an integrated electro-mechanical cryogenic cooling system.
To express your interest in this opportunity, download tender documents, etc please use the following URL: https://lupc.bravosolution.co.uk/go/15899714018805112279
About the buyer
Contact name
National Physical Laboratory
Address
Hampton Road
Teddington
TW11 0LW
England
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Closing: 22 May 2023, 3pm
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