Source: https://tendernation.io/opportunities/01a13bd1-349d-720c-9a7c-711b77c4f395/ukri-5382-znsag6lif-neutron-scintillator-screens awarded GB open procedure Suitable for SMEs # UKRI-5382 ZnS:Ag/6LiF Neutron Scintillator Screens [UK Research & Innovation (UKRI)](https://tendernation.io/buyers/uk-research-innovation-ukri) Estimated value £1,760,000 Published 20 May 2026 Deadline Closed 17 Feb 2026 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Buyer says suitable for VCSEs The buyer ticked “suitable for voluntary, community and social enterprises” on the notice. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender The ISIS Neutron and Muon Source is a world-leading centre for research using neutrons and muons, supporting a broad scientific user community across disciplines such as materials science, physics, chemistry, and engineering. As part of its detector development programme, ISIS manufactures a range of in-house detectors, including wavelength-shifting fibre (WLSF) based scintillation detectors, which are critical for capturing and characterising neutron interactions with high spatial and temporal resolution. A key component of these detectors is the neutron scintillator screen which is composed of a zinc sulphide silver activated phosphor and an enriched lithium-6 fluoride neutron-sensitive converter material. Following neutron capture in the converter, light is emitted from the phosphor subsequently collected by wavelength-shifting fibres and guided to photodetectors for signal processing. The quality, consistency and performance of the scintillator screen directly impact detection efficiency and effective gamma‑ray and background discrimination. To support new detector builds, particularly for the HRPD-X, SANDALS II and WISH II instruments, a framework contract is required to ensure a reliable supply of high-performance ZnS:Ag/6LiF screens that meets the stringent technical and operational demands of ISIS instruments. These screens must be provided in different shapes, sizes and thicknesses to match the range of instrument beamline geometries and neutron fluxes encountered at ISIS. Some of the screens will be operated in vacuum and must be capable of maintaining performance within a vacuum environment for the lifetime of the detector, typically 15 years. The purpose of this tender is to guarantee a steady supply of ZnS:Ag/6LiF neutron scintillator screens to cover the needs of the ISIS Endeavour Programme, a 10-year programme to upgrade the suite of ISIS instruments. It will ensure a consistent and reliable product is always being provided throughout the programme. It will help to reduce the need for generating repeat tendering and for storing large quantities of product on site until needed. This contract is being awarded following a competitive open tender process. Read full description ## CPV classification Laboratory, optical and precision equipments (excl. glasses) Source Find a Tender (UK) · Notice ocds-h6vhtk-05fc90-2026-05-20T11:49:58+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-05fc90-2026-05-20T11:49:58+01:00) 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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