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Lower-hybrid-wave propagation in a tokamak with non-circular cross-section

K. Ushigusa, S. Takamura, T. Okuda1982年被引用 5Nuclear FusionIF 3出版社

The effect of non-circularity of the plasma cross-section on the lower hybrid wave heating (LHWH) is studied by assuming reasonable profiles of the plasma parameters which are consistent with the magnetic flux function obtained by the theory of MHD equilibrium. It is found that, in a tokamak with a non-circular cross-section, the lower hybrid wave can penetrate into the plasma core in the same way as in a conventional tokamak. The absorption regions are in the case of an elliptic cross-section, localized near the midplane. A new function of the poloidal divertor, i.e. the reduction of surface waves with unfavourable effects on LHWH is discussed.

日本語訳

プラズマ断面の非円形性が低ハイブリッド波加熱(LHWH)に及ぼす効果を、MHD平衡の理論によって得られる磁束関数と整合するプラズマパラメータの合理的なプロファイルを仮定して研究した。非円形断面を有するトカマクにおいても、低ハイブリッド波は従来のトカマクと同様にプラズマ中心部まで侵入できることが見出された。吸収領域は、楕円断面の場合、赤道面近傍に局在する。LHWHに好ましくない影響を及ぼす表面波の低減という、ポロイダルダイバータの新たな機能について議論する。

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