# ITT\_123111 - Cryogen Free Josephson Junction \(JJ\) Voltage System

> A sourced UK public sector contract award published by National Physical Laboratory.

## Key facts

- Buyer: [National Physical Laboratory](/buyers/national-physical-laboratory/contract-awards)
- Tender value: £350,000
- Published: 27 January 2025
- Contract start: 11 March 2025
- Contract end: 10 March 2026
- Stage: open_tender
- Procurement category: goods
- Notice ID: 83d52815-1cc4-4313-bf1b-64a33177886d-820677
- OCID: ocds-b5fd17-e4fa5bb3-c2f0-467b-b9cc-05bc4a2b4e91

## Description

The National Physical Laboratory \(NPL\) requirement is for a complete primary voltage calibration system built around a Josephson array quantum standard\. The purpose is to move away from the current generation of standards that use liquid helium to cool the sample to one that is liquid cryogen-free with the aim that no liquid helium should be required for either cool-down or routine operation, and hence the system should be capable of continuous operation for periods of at least several months\. The system should be capable of providing: SI traceable DC voltages up to 10 V, with an uncertainty better than 1 nV/V\. software to run the system and automate the calibration of standards\. the capability to generate AC voltages up to a few kHz\. To express interest in this tender please use the following URL: https://lupc\.bravosolution\.co\.uk/web/login\.shtml and search for 'ITT: itt\_2533 - ITT\_123111 - Cryogen Free Josephson Junction \(JJ\) Voltage System'

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/83d52815-1cc4-4313-bf1b-64a33177886d-820677)