Published date: 14 October 2022

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.


Closing: 28 October 2022, 3pm

Contract summary

Industry

  • Laboratory, optical and precision equipments (excl. glasses) - 38000000

Location of contract

TW11 0LW

Value of contract

£0

Procurement reference

tender_319281/1114396

Published date

14 October 2022

Closing date

28 October 2022

Closing time

3pm

Contract start date

5 December 2022

Contract end date

4 December 2023

Contract type

Supply contract

Procedure type

Competitive quotation (below threshold)

The buyer selects a group of potential suppliers to invite to tender.

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 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.

More information

Links

Additional text

Please ensure that you register on Bravo Solutions (link below) to obtain the documents and submit your interest / intention to bid.

About the buyer

Address

Hampton Road
Teddington
TW11 0LW
England

Email

charley.choules@npl.co.uk