DEPARTMENT FOR SCIENCE, INNOVATION AND TECHNOLOGY

Optical diagnostics system for ion sources

Project disclaimer

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Description

The UK Science and Technology Facilities Council (STFC) ISIS Neutron and Muon Source (UK) and iThemba LABS (South Africa) will collaborate on the development of optical diagnostics systems for ion sources. Optical diagnostics will be used to improve ion source availability for accelerators and their applications. The diagnostics system will guide decisions on adjustments of the ion source control parameters and provide information for the technological development of ion sources at iThemba LABS. The time-resolved optical diagnostics system will be first developed and tested in the UK using existing ion source test facilities at ISIS. The system will then be deployed in South Africa. The main features of the optical diagnostics system are good time-resolution, wavelength selectivity, capability for simultaneous monitoring of several emission bands and ease-of-use. The setup is based on bandpass filters providing selectivity and silicon photomultiplier detectors providing high-sensitivity and good temporal resolution. The proposed work builds on pioneering development of optical diagnostics at ISIS. The ISIS Low Energy Beams Group (LEBG) have used time-resolved optical diagnostics to study the plasmas of the ISIS Penning and prototype RF ion sources, and for the detection of beam-induced light emission to study the space charge compensation in the low energy beam transport. We will utilise the ion source and low energy beam transport test facilities at ISIS for further prototyping of the diagnostics tool developed for iThemba LABS, which makes the approach efficient and mitigates the risk related to the prototyping stage. The risk related to technology transfer is minimised by arranging a training period for iThemba LABS staff at ISIS where they are trained to use the prototype diagnostics device for monitoring a real ion source and to carry out the data analysis. The research teams at ISIS and iThemba LABS have a proven track-record in ion source and plasma diagnostics development as well as operation of ion sources at accelerator-based user facilities. Each team is led by an internationally recognised expert. The project budget consists of STFC staff time, equipment and travel & subsistence. The equipment cost includes vacuum components, optical fibres, optical components, spectrometers, silicon photomultiplier diodes, pre-amplifier components, power supplies, oscilloscopes and data acquisition computers. Several experimental campaigns attended by researchers from each laboratory will be conducted during the project. The country that will directly benefit from this Official Development Assistance (ODA) project is South Africa. 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. Some of these radioisotopes are used for cardiac and neurological applications and these are produced solely for local clients due to the half-life of the isotopes. iThemba LABS in general contributes towards developing a sufficiently trained cohort of future researchers. The charged particle beams of all these applications are delivered by the ion sources operated by iThemba LABS. The proposed technology transfer of the optical diagnostics system is foreseen to improve the usability and reliability of the ion sources, resulting in better utilisation of the accelerator facilities addressing these development goals and challenges.

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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