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

Nuclear Fushion

article

Y. Zhang¹  X. D. Zhang¹  Q. L. Qiu¹  J. Zhang¹  B. Li¹  L. Chen¹  Z. P. Luo¹  J. P. Qian¹  L. Wang¹  H. Q. Liu¹  L. Y. Meng¹  X. Liu¹  B. Zhang¹  B. Shen¹  Q. P. Yuan¹  B. J. Xiao¹  X. Z. Gong¹  G. S. Xu¹  J. S. Hu¹  K. Lu¹  X. C. Wu¹  Y. T. Song¹  the EAST Team¹ 

[1] Institute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences

关键词: tokamak divertor;    new divertor concept;    strike point sweeping;    heat load reduction;   

DOI  :  10.1088/1741-4326/acd865

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

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.

【 授权许可】

Unknown