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Steady state plasma performance on JT-60U

O Naito1993年Plasma Physics and Controlled FusionIF 2.2出版社

Recent results from JT-60U on high performance experiments and studies on steady state plasma are presented. High fusion performance of nD(0) tau ETi(0)=1.1*1021m-3s keV, Sn=5.6*1016s-1, QDT=0.6, Ti(0)=40 keV has been obtained in the regime names 'high- beta p H-mode'. By intensive survey on pressure/current profile control, beta limit has been substantially expanded: beta p<or=4.3, beta N<or=4.0%mT/MA. As a result, up to 10 seconds of quasi steady state high confinement discharges, with a substantial bootstrap current fraction have been experimentally demonstrated. Up to 3.6 MA of plasma current has been driven by LHCD. In low current (<or=1.2 MA), full non-inductive current drive has also been achieved by NB and NB+LHCD.

日本語訳

JT-60Uにおける高性能実験と定常プラズマ研究の最近の成果を紹介する。高ベータHモード領域において、nD(0)τETi(0)=1.1×10^21 m^-3・keV・s、Sn=5.6×10^16 s^-1、QDT=0.6、Ti(0)=40 keVという高い核融合性能が達成された。圧力・電流分布制御に関する集中的な調査により、ベータ限界は大幅に拡大され、βp≦4.3、βN≦4.0%・m・T/MAが達成された。その結果、実質的なブートストラップ電流割合を伴う準定常高閉じ込め放電が最長10秒間実証された。LHCDにより最大3.6 MAのプラズマ電流が駆動された。低電流(≦1.2 MA)では、NBおよびNB+LHCDによる完全非誘導電流駆動も達成された。

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