---
title: "Supply of High Purity Germanium (HPGe) Gamma-Ray Detector and Cryogenic Cooling System for Gamma Spectroscopy Applications"
ocid: "ocds-h6vhtk-077dcb"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-077dcb"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-077dcb.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-077dcb.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NPL Management Limited"
published: "2026-09-30"
---

# Supply of High Purity Germanium (HPGe) Gamma-Ray Detector and Cryogenic Cooling System for Gamma Spectroscopy Applications

Buyer: NPL Management Limited  
Current stage: Award  
OCID: ocds-h6vhtk-077dcb

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## Summary

NPL Management Limited procured a specialist high-purity germanium (HPGe) gamma-ray detector and cryogenic cooling system for high-resolution gamma-ray spectroscopy, ionising radiation measurement, nuclear metrology and scientific research at the National Physical Laboratory’s Centre for Ionising Radiation and Metrology in Teddington. The supply includes an ORTEC GAMMA-X coaxial N-type HPGe detector with carbon-fibre window, remote preamplifier and high-voltage filter; a J-type streamline cryostat; a Möbius Recycler cooling system; configuration packages for the detector and cryostat; and accessories. This is specialist scientific measurement equipment for radiation metrology and research, rather than general laboratory instrumentation.

The procurement is complete and the contract is active. NPL Management Limited awarded the single lot to AMETEK (GB) Limited following a below-threshold direct award without competition. The award date and contract signature date were 4 September 2026. The contract runs from 4 September to 31 December 2026. Its value is £6,591,000 excluding VAT (£7,909,200 including VAT). The published information does not set out an evaluation basis or supplier eligibility criteria. The contract covers supply and delivery of the detector, cryogenic cooling equipment, configuration packages and associated accessories.

This award shows demand at NPL for high-specification HPGe detector systems and compatible cryogenic cooling equipment supporting gamma spectroscopy, ionising-radiation measurement and nuclear metrology. A credible competitor would need to supply an integrated, specialist system, including detector, cryostat and cooling components, configuration and accessories, with the technical capability to support precision scientific measurement and research. Experience delivering comparable instrumentation and ensuring that detector and cooling equipment work together would be directly relevant. The buyer used a direct award without competition for this below-threshold purchase, and selected AMETEK (GB) Limited. Suppliers should therefore recognise both the specialist nature of the requirement and the route used for this procurement when assessing the commercial relevance of similar work at NPL.

## Notice

Supply and delivery of a specialist ORTEC GAMMA-X High Purity Germanium (HPGe) Gamma-Ray Detector System and associated cryogenic cooling equipment from AMETEK (GB) Limited. The procurement includes a coaxial N-type HPGe detector with carbon fibre window, remote preamplifier and high-voltage filter, J-type streamline cryostat, Mobius Recycler cooling system, detector and cryostat configuration packages, and associated accessories. The equipment will be used for high-resolution gamma-ray spectroscopy, ionising radiation measurement, nuclear metrology, and scientific research activities within NPL's Centre for Ionising Radiation and Metrology.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/092467-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Direct |
| Procurement method details | Below threshold - without competition |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 30 Sep 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 4 Sep 2026 - 31 Dec 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £6,591,000 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NPL Management Limited |
| Locality | TEDDINGTON |
| Postcode area | Twickenham |
| Postcode | TW11 0LW |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI7 Outer London - West and North West |
| ITL 3 | TLI75 Hounslow and Richmond upon Thames |
| Local authority | Richmond upon Thames |
| Electoral ward | Teddington |
| Westminster constituency | Twickenham |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | AMETEK (GB) LIMITED |

## CPV Codes

### Divisions

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

### Codes

- 38300000 - Measuring instruments
- 38540000 - Machines and apparatus for testing and measuring

## Release History

- 30 Sep 2026 at 15:10 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/092467-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/092467-2026
  30th September 2026 - Contract details notice on Find a Tender

## Notice URLs

- http://www.ametek.co.uk/
- http://www.npl.co.uk
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-077dcb. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-077dcb.json.