Effects of fast ions produced by ICRF heating on the pressure at EAST  

作　　者：Zhen ZHENG Nong XIANG Cheng YANG Yingfeng XU 郑振;项农;杨程;徐颖峰(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China;University of Science and Technology of China,Hefei 230026,People's Republic of China;Center for Magnetic Fusion Theory,Chinese Academy of Sciences,Hefei 230031,People's Republic of China)

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China [2]University of Science and Technology of China,Hefei 230026,People's Republic of China [3]Center for Magnetic Fusion Theory,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

出　　处：《Plasma Science and Technology》2020年第2期38-46,共9页等离子体科学和技术（英文版）

基　　金：The authors would like to thank Doctors Guosheng Xu,Damao Yao,and Yongliang Li for helpful discussions;This work was supported by the National Key R&D Program of China(Nos.2017YFE0300400,2017YFE0300406);National Natural Science Foundation of China(Nos.11575239,11775265).

摘　　要：Ion cyclotron resonance heating(ICRH),which can produce fast ions,is an important auxiliary heating method at EAST.To analyze the effect of ICRH-induced fast ions on the plasma pressure at EAST,simulations are performed using TRANSP and TORIC codes.It is found that the ICRF-induced fast ion pressure cannot be negligible when the ICRF power is sufficiently high.The magnitude of the total ion pressure can be raised up to 60%of the total pressure as the input power rises above 3 MW.The pressure profile is also significantly modified when the resonant layer is changed.It is shown that by changing the wave frequency and antenna position,the total ion pressure profile can be broadened,which might provide an option for profile control at EAST.

关 键 词：ICRH EQUILIBRIUM fast ion pressure minority heating 

分 类 号：TL631.24[核科学技术—核技术及应用]