小特集 「球状トカマクの実用炉への展望 －トカマクの低アスペクト比化への挑戦－」
球状トカマクの実用炉への展望 -トカマクの低アスペクト比化への挑戦- 2.ST はどこまで高ベータ化できるか? 2.1 高ベータ運転の限界はどこか?
2004 年 80 巻 11 号 p. 921-923
詳細
2004 年 80 巻 11 号 p. 921-923
High-beta ST research is motivated by its high normalized current Ip/aBT0 achievable at a low aspect ratio and its direct access to second stability for ballooning modes. Key issues for the high-beta ST sustainment are profile control for ballooning/ current-driven kink stabilities and positioning of the conductive wall for mode suppression. ST termination by resistive wall modes (RWM) revealed that velocity shear is a useful tool for the better stability.
