Experimental study of single-translated fieldreversed configuration in KMAX  

作　　者：Hui LIAO Chaoqi HU Yilin LI Baoming REN Xuan SUN 廖晖;胡超琪;李宜霖;任宝明;孙玄(Department of Plasma Physics and Fusion Engineering,School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People’s Republic of China)

机构地区：[1]Department of Plasma Physics and Fusion Engineering,School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People’s Republic of China

出　　处：《Plasma Science and Technology》2022年第9期37-44,共8页等离子体科学和技术（英文版）

基　　金：supported by the National Key R&D Program of China(No.2017YFE0301802);National Natural Science Foundation of China(No.12175226)。

摘　　要：For collisional merging fleld-reversed conflgurations(FRCs),it is desired to have both FRCs tuned to be approximately the same,as well as to optimize each FRC to have high temperature and high translation speed so as to retain most of the equilibrium flux after traveling a distance to the middle plane for merging.The present study reports the experimental study of a single-translated FRC in the KMAX-FRC device with various diagnostics,including a triple probe,a bolometer,several magnetic probe arrays,and a novel 2 D internal magnetic probe array.According to the measurements conducted in the present study,a maximum toroidal magnetic fleld equal to~1/3 of the external magnetic fleld inside the FRC separatrix radius is observed,and the typical parameters of a single-translated FRC near the device’s mid-plane are ne~(2–4)×10^(19)m^(-3),T_(e)~8e V,T_(i)~5 e V,r_(s)~0.2 m,l_(s)~0.6 m andφ_(()p(RR))~0.2 m Wb.The 2 D magnetic topology measurement revealed,for the flrst time,the time evolution of the overall internal magnetic flelds of a single-translated FRC,and an optimized operation regime is given in the paper.

关 键 词：fleld-reversed conflguration FRC formation FRC translation probe measurement 

分 类 号：O53[理学—等离子体物理]