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ELMy H-mode with high- beta N and high- beta p in JT-60U

Y Kamada, K Ushigusa, O Naito, Y Neyatani, S Ishida, T Fujita, R Yoshino, M Kikuchi, M Mori, H Ninomiya1994年Plasma Physics and Controlled FusionIF 2.2出版社

By modification of current and heat deposition profiles, the integrated core plasma performance was improved in ELMy H-mode. In a quasi steady state, beta p approximately 2.5-3, beta N approximately 2.5-3.1 and H-factor approximately 1.8-2.1 were sustained simultaneously under the full current drive condition (bootstrap current 55%, beam driven current 45% at Ip=0.5MA). The achievable beta p value and the energy confinement performance increases systematically with safety factor at the edge qeff and a high qeff operation (qeff>6) is required to obtain favorable integrated performance. To obtain these improved high beta ELMy plasmas, it is essential to control MHD activities; suppression of beta p-collapse and control of ELM activity.

日本語訳

電流および熱流束分布の修正により、ELMy Hモードにおける統合されたコアプラズマ性能が改善された。準定常状態において、βp≈2.5〜3、βN≈2.5〜3.1、H因子≈1.8〜2.1が、完全電流駆動条件下(Ip=0.5MAにおけるブートストラップ電流55%、ビーム駆動電流45%)で同時に維持された。達成可能なβp値およびエネルギー閉じ込め性能は、エッジ安全係数qeffとともに系統的に増加し、高いqeff運転(qeff>6)が良好な統合性能を得るために必要である。これらの改善された高ベータELMyプラズマを得るためには、MHD活動の制御が不可欠であり、βp崩壊の抑制およびELM活動の制御が重要である。

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Edge localized modeH-modeJT-60UELMy H-mode
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