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Real time control of the plasma current and elongation in tokamaks using ECRH actuators

J I Paley, S Coda, the TCV Team2007年Plasma Physics and Controlled FusionIF 2.2出版社

Real time control of the plasma elongation and plasma current using electron cyclotron resonance heating (ECRH) actuators has been demonstrated on TCV. Tokamak plasmas may be elongated by off-axis ECRH. The associated flattening of the current density profile increases the plasma's vertical stability, enabling higher elongations to be obtained, at lower currents than would be possible in Ohmic conditions. Successful experiments were carried out on TCV to control, in real time, the magnitude of the elongation and the ECRH deposition location using second harmonic ECRH power and ECRH launcher mirror angle actuators. Plasma current control in fully non-inductive plasmas using ECRH actuators to drive ECCD was also demonstrated.

日本語訳

TCVにおいて、電子サイクロトロン共鳴加熱(ECRH)アクチュエータを用いたプラズマ伸長度およびプラズマ電流のリアルタイム制御が実証された。トカマクプラズマは、オフアクシスECRHによって伸長され得る。それに伴う電流密度分布の平坦化は、プラズマの垂直安定性を向上させ、オーミック条件下で可能な場合よりも低い電流でより高い伸長度を達成することを可能にする。TCVにおいて、第2高調波ECRHパワーおよびECRHランチャーミラー角度アクチュエータを用いて、伸長度の大きさとECRH堆積位置をリアルタイムで制御する実験が成功裏に実施された。ECRHアクチュエータを用いて電流を駆動する完全非誘導プラズマにおけるプラズマ電流制御も実証された。

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Electron cyclotron heating
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