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An innovative divertor concept, the fish tail divertor, for reducing the surface temperature on the divertor target plate in EAST tokamak experiments

Y. Zhang, X. D. Zhang, Q. L. Qiu, J. Zhang, B. Li, L. Chen, Z. P. Luo, J. P. Qian, L. Wang, H. Q. Liu2023年Nuclear FusionIF 3出版社

An innovative divertor concept, the fish tail divertor, is proposed in this paper, aimed at reducing the surface temperature on the tokamak divertor plate as well as that due to the edge localized modes. This new concept has been implemented in experiments to demonstrate its capability of strike point sweeping on the plate at a frequency range from 10 to 100 Hz by using an oscillating magnetic field. A strike point movement of 5–6 cm is achieved by applying a coil current of several percent of plasma current, leading to a significant reduction of divertor surface temperature. The result indicates a possible application in a fusion reactor.

日本語訳

本論文では、トカマクダイバータ板の表面温度、および周辺局在モードによる表面温度を低減することを目的とした、革新的なダイバータ概念であるフィッシュテールダイバータを提案する。この新しい概念は、振動磁場を用いて、板上のストライク点を10~100 Hzの周波数範囲でスイープする能力を実証するために実験に実装された。プラズマ電流の数パーセントのコイル電流を印加することにより、5–6 cmのストライク点移動が達成され、ダイバータ表面温度の大幅な低減につながる。この結果は、核融合炉における応用の可能性を示している。

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east高精度(タイトル一致)

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DivertorEASTDivertor target
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