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Plasma heating — A comparative overview for future applications

R. Wilhelm1989年Fusion Engineering and DesignIF 1.7出版社

AbstractSuccessful plasma heating is essential in present fusion experiments, for the demonstration of D-T burn in future devices and finally for the fusion reactor itself. This paper discusses the common heating systems with respect to their present performance and their applicability to future fusion devices. The comparative discussion is oriented to the various functions of heating, which are: •- plasma heating to fusion-relevant parameters and to ignition in future machines,•- non-inductive, steady-state current drive,•- plasma profile control,•- neutral gas breakdown and plasma build-up.In view of these different functions, the potential of neutral beam injection (NBI) and the various schemes of wave heating (ECRH, LH, ICRH and Alfvén wave heating) is analyzed in more detail. The analysis includes assessments of the present physical and technical state of these heating methods, and makes suggestions for future developments and about outstanding problems. Specific attention is given to the still critical problem of efficient current drive, especially with respect to further extrapolation towards an economically operating tokamak reactor. Remarks on issues such as reliability, maintenance and economy conclude this comparative overview on plasma heating systems.

日本語訳

プラズマ加熱の成功は、現在の核融合実験、将来の装置におけるD-T燃焼の実証、そして最終的には核融合炉そのものにとって不可欠である。本論文では、一般的な加熱システムについて、その現在の性能と将来の核融合装置への適用可能性の観点から考察する。比較考察は、加熱の多様な機能に焦点を当てたものであり、具体的には以下の通りである:将来の装置における核融合関連パラメータへの加熱および点火、非誘導定常電流駆動、プラズマ分布制御、中性ガス破壊およびプラズマ生成。これらの異なる機能を踏まえ、中性粒子ビーム入射(NBI)および多様な波動加熱方式(ECRH、LH、ICRH、アルヴェーン波加熱)の可能性をより詳細に分析する。分析には、これらの加熱方法の現在の物理的・技術的状態の評価が含まれ、将来の開発および未解決の問題に関する提案を行う。特に、経済的に運転される核融合炉へのさらなる外挿に関連して、依然として重要かつ困難な課題である効率的な電流駆動に特に注目する。最後に、信頼性、保守性、経済性に関する論点を述べ、プラズマ加熱システムに関する比較考察を締めくくる。

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Plasma heating
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