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Influence of electron cyclotron current drive on the transition between normal sawteeth and the stationary state

W J Chen, W Zhang, Z W Ma, H X Zhang, X Wang2024年Plasma Physics and Controlled FusionIF 2.2出版社

The transition between normal sawteeth and a sawtooth-free stationary state after electron cyclotron current drive (ECCD) deposition has been numerically investigated by the CLT code. The periods of normal sawteeth decrease if co-ECCD deposits inside the initial surface and increase when co-ECCD deposits outside the surface. When co-ECCD deposits in the vicinity of the surface, the normal sawteeth can be converted into a stationary state, during which sawteeth are completely prevented. The stationary state can also be converted into normal sawteeth if co-ECCD is injected just outside the surface. The mechanism of the transition between normal sawteeth and sawtooth-free stationary states is then discussed.

日本語訳

電子サイクロトロン電流駆動(ECCD)の堆積後の通常の鋸歯状振動と鋸歯状のない定常状態との間の遷移が、CLTコードによって数値的に調査された。通常の鋸歯状振動の周期は、co-ECCDが初期の磁気面の内側に堆積すると減少し、その磁気面の外側に堆積すると増加する。co-ECCDがその磁気面の近傍に堆積すると、通常の鋸歯状振動は定常状態に変換され、その間鋸歯状振動は完全に防止される。その定常状態は、co-ECCDがその磁気面のすぐ外側に注入されると、通常の鋸歯状振動に変換されることもできる。そして、通常の鋸歯状振動と鋸歯状のない定常状態との間の遷移の機構が議論される。

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Current driveElectron cyclotron current drive
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