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Real-time virtual circuits for plasma shape control via neural network emulators: experimental demonstration on MAST Upgrade

arXiv · AI, language, vision and robotics · article · Aug 28, 2026 · UTC

Conventional plasma shape control in tokamaks relies on virtual circuits (VCs) that are computed offline from linearisations around a small, tailored number of reference equilibria, and deployed as expertly prepared schedules during the discharge. Here, we report on the first experimental deployment of real-time VCs. We replace pre-set look up tables with VCs updated in real time using surrogates of the plasma response. Both the existing control architecture and the interpretability of VC-based control are retained. Previous work showed that neural network emulators can produce accurate VCs, a

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