Real-time plasma equilibrium reconstruction and shape control for the MAST Upgrade tokamak

H. Anand, W. Wehner, D. Eldon, A. Welander, Z. Xing, A. Lvovskiy, J. Barr, E. Cho, B. Sammuli, D. Humphreys2024年8月Nuclear FusionIF 3 出版社

Real-time magnetic control has been developed to deliver precise control of multiple plasma shape parameters for advanced divertor configurations, including double-null, Super-X, X-point target and X-divertor for the first time on the MAST Upgrade (MAST-U) spherical tokamak. Successful real-time magnetic equilibrium control of different plasma shape variables has been accomplished in the 2022–2023 MAST-U experimental campaign for the advanced MAST-U divertor configurations. Application of the MAST-U boundary reconstruction algorithm, LEMUR, is described and compared with off-line equilibrium reconstruction and diagnostic measurements. The process of design and verification of the axisymmetric magnetic control schemes using a suite of control analysis tools (known collectively as TokSys) is also described.

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ENThis paper will be of interest to fusion researchers working on plasma control and advanced divertor configurations, as well as students studying plasma physics and fusion energy.#MASTPlasmaShaperControl #FusionPlasmaReconstructionAndControl #AdvancedFusionDivectors

This paper describes the development of real-time magnetic control to precisely control the shape of advanced divertor configurations in the MAST Upgrade tokamak. The team used a boundary reconstruction algorithm and control analysis tools to achieve successful real-time control of different plasma shape variables.

本論文は、MASUTアップグレード・トカマクで初めて実現された高度なダイバータ構成(ダブルヌル、スーパーX、Xポイントターゲット、Xダイバータ)の精密な形状制御に関する研究を報告しています。LMURアルゴリズムを用いた実時間磁気平衡再構築と、オフラインの平衡再構築との比較が行われています。