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Absolute neutron emission estimate on MAST Upgrade based on activation foil measurements

MacLean, Craig; Cecconello, Marco; Allan, Scott; Grove, Callum; Worrall, Ross; Lennon, Kimberley; the MAST Upgrade Team; the EUROfusion Tokamak Exploitation Team

Absolute neutron emission estimate on MAST Upgrade based on activation foil measurements Thumbnail


Authors

Craig Maclean craig.l.maclean@durham.ac.uk
PGR Student Doctor of Philosophy

Scott Allan

Callum Grove

Ross Worrall

Kimberley Lennon

the MAST Upgrade Team

the EUROfusion Tokamak Exploitation Team



Abstract

Determination of the absolute neutron rate production in any fusion device and in particular for ITER and future power plants is essential for their operation and for the optimization of the fusion power. A common calibration approach is to use well characterized neutron sources placed inside the vacuum vessel combined with Monte Carlo simulations. This method is fraught with several difficulties both from an engineering and data modeling and interpretation point of view. This is particularly true for future fusion power plants. This work demonstrates an alternative approach to the absolute calibration of the neutron rate based on activation foil measurements combined with forward modeling of a well characterized plasma discharge and fusion device. This method has been applied to MAST Upgrade and the good agreement found between measured and modeled foil activity support this approach. The results presented suffer from some limitations but suggestions are given on how to resolve them.

Citation

MacLean, C., Cecconello, M., Allan, S., Grove, C., Worrall, R., Lennon, K., the MAST Upgrade Team, & the EUROfusion Tokamak Exploitation Team. (2025). Absolute neutron emission estimate on MAST Upgrade based on activation foil measurements. Plasma Physics and Controlled Fusion, 67(6), Article 065011. https://doi.org/10.1088/1361-6587/add764

Journal Article Type Article
Acceptance Date May 12, 2025
Online Publication Date May 21, 2025
Publication Date 2025-06
Deposit Date May 21, 2025
Publicly Available Date May 23, 2025
Journal Plasma Physics and Controlled Fusion
Print ISSN 0741-3335
Electronic ISSN 1361-6587
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 67
Issue 6
Article Number 065011
DOI https://doi.org/10.1088/1361-6587/add764
Public URL https://durham-repository.worktribe.com/output/3957124

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