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ICRH modulation on TEXTOR: eigenfunctions of the quasilinear Fokker-Planck equation and experimental results

D Lebeau, R Koch, A M Messiaen, P E Vandenplas, R R Weynants1990年Plasma Physics and Controlled FusionIF 2.2出版社

In order to analyze RF amplitude modulation experiments on TEXTOR, the authors have develop a realistic three-species model for the energy transfer during RF heating. They investigate the stationary and the nonstationary behaviour using the quasilinear isotropic Fokker-Planck equation with a global minority confinement time. An important result is that many characteristic times including small ones for the ions' slowing down contribute to the process. The average and the modulated power going to the minority ions are found to be differently distributed among species. They take into account the effect of the sawteeth and of the density modulation in the interpretation of the experimental data obtained on TEXTOR and we apply their model to the analysis of this corrected data. This analysis provides the distribution of power absorption through the minority and mode conversion mechanisms.

日本語訳

本论文摘要的日文翻译如下: RF振幅をTEXTORで解析するために、著者らは現実的な3種モデルを開発した。彼らは、準線形Fokker-Planck方程式を用いて、マイノリティイオンの加熱と減速の両方を研究する。重要な結果として、多くの特性時間(マイノリティイオンの減速時間、エネルギー閉じ込め時間、衝突時間を含む)が、RF加熱中のマイノリティイオンの速度分布関数の形成に寄与することが見出された。平均パワーと変調パワーがマイノリティイオンに与えられる際、それらは種間で異なる分布を示すことが明らかにされた。著者らは、鋸歯状振動と密度変調の効果を考慮し、TEXTORで得られた実験データの解釈に彼らのモデルを適用する。この解析により、モード変換機構を通じたパワー吸収の分布が明らかにされる。

装置

textor高精度(タイトル一致)

wiki

Ion cyclotron heatingTEXTORFokker-Planck
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