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Abstract |
Spherical tokamak has a natural elongation thanks to low aspect ratio. But QUEST has a divertor configuration of higher elongation ratio κ with negative decay index n. The toroidally asymmetric cut is... necessary for plasma current start-up, and the effect of the number and the width on the growth rate is discussed in this paper. The poloidal asymmetry, e.g. extension port is also indispensable and the effect is estimated. And the temperature of the in-vessel component, e.g. high-temperature wall is considered, too.show more
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