DEPARTMENT FOR SCIENCE, INNOVATION AND TECHNOLOGY

Characterization of high-energy neutron beams at iThemba LABS for use in irradiation of electronics

Project disclaimer

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Description

The project aims to characterize high-energy quasi-monoenergetic neutron beams at iThemba LABS for applications in irradiation testing of electronics. High-energy neutron facilities are crucial for testing the effects of atmospheric radiation, induced by cosmic rays, on electronics. The increasing need of reliable electronics is today coming from many growing sectors, like vehicle electrification, automation, and internet infrastructure. The project will evaluate neutron fluxes, spectra, and beam uniformity at energies from 50 to 200 MeV. A variety of neutron techniques, that have been developed and used at the ISIS neutron source of the Rutherford Appleton Laboratory, will be deployed to perform a complete characterization and a cross-calibration with the ChipIR beamline. Silicon and diamond detectors will be used for their well-known neutron energy response combined with fast signals that allow for time of flight measurements. Activation foils will measure neutron flux and energy distribution with direct reference to nuclear cross sections. SRAM-based detectors will monitor Single Event Upsets to measure neutron flux and beam profiles, aiding cross-calibration with existing facilities like ChipIR at ISIS. This comprehensive approach ensures robust testing and confidence for using these beams for microelectronics testing application. The research teams at ISIS and iThemba LABS have a proven track-record in neutron measurements and instrumentation development as well as operation of fast neutron user facilities. Each team is led by an internationally recognised expert. The total project budget of £ 211k consists of STFC staff time, equipment, calibration at a third reference facility and travel&subsistence. The equipment cost includes silicon and diamond detectors, activation foils, electronics and SRAM based monitors. South Africa is the country that will directly benefit from this Official Development Assistance (ODA) project. A desired outcome of this project is to expand the international user base of the quasi-monoenergetic neutron beams at iThemba LABS for applications in irradiation testing of electronics. On top of being an international centre of excellence, the particle accelerators operated by iThemba LABS can make a huge contribution towards improving the quality of the lives of South African citizens. As an example of direct societal and regional benefit, iThemba LABS uses accelerated proton beams to facilitate the production of radiopharmaceuticals. These radioisotopes are used amongst others for PET imaging of neuroendocrine tumours, prostate cancer and positron annihilation studies. iThemba LABS in general contributes towards developing a cohort of future researchers in nuclear measurements, instrumentation, and related applications.

Objectives

ISPF aims to foster prosperity by solving shared global research and innovation challenges. This will be done through working closely with international partners to: support research excellence and build the knowledge and technology of tomorrow strengthen ties with international partners that share our values; enable researchers and innovators to cultivate connections, follow their curiosity and pioneer transformations internationally, for the good of the planet. Activities under ISPF ODA aim to deliver research and innovation partnerships with low- and middle-income countries.

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Location

The country, countries or regions that benefit from this Programme.

South Africa

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