Dependence of the internal inductance on the radial distance between the primary and secondary X-point surfaces in the EAST tokamak  

作　　者：Qi WANG Oingquan YANG Zhengmao SHENG Guosheng XU Jinping QIAN Ning YAN Yifeng WANG Heng ZHANG 汪启;杨清泉;盛正卯;徐国盛;钱金平;颜宁;王一丰;张恒(Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University;Institute of Plasma Physics, Chinese Academy of Sciences;Science Island Branch of Graduate School, University of Science and Technology of China;School of Nuclear Science and Technology, University of Science and Technology of China)

机构地区：[1]Institute for Fusion Theory and Simulation,Department of Physics,Zhejiang University,Hangzhou 310027,People＇s Republic of China [2]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People＇s Republic of China [3]Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230031,People＇s Republic of China [4]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》2018年第10期62-67,共6页等离子体科学和技术（英文版）

基　　金：supported by the National Magnetic Confinement Fusion Research Program of China under Grant Nos. 2013GB104004, 2015GB101000, and 2013GB107003;National Natural Science Foundation of China under Grant Nos. 11235009, 11475147, 11422546, 11575235, and 11575236;Fundamental Research Fund for Chinese Central Universities under Grant No. 2018FZA3004

摘　　要：In view of their advantage in long-pulse high-performance operations, low internal inductance scenarios are being developed and tested for the EAST and other tokamaks. Dependence of the internal inductance on several main plasma configuration parameters are statistically analyzed. It is found that the internal inductance of the plasma is closely related to the radial distance dRsep between the primary and secondary X-point surfaces on the outer mid-plane as well as the poloidal field of the last closed flux surface. Moreover, dRsep is alSO related to the distribution of the fast electrons driven by the injected lower-hybrid waves, which is partially responsible for the observed relation between dRsep and the internal inductance. The results here should therefore be helpful as a guide for future experiments on internal inductance control and long-pulse operations of the EAST and other tokamaks, as well as for detailed theoretical study of the underlying physics.In view of their advantage in long-pulse high-performance operations, low internal inductance scenarios are being developed and tested for the EAST and other tokamaks. Dependence of the internal inductance on several main plasma configuration parameters are statistically analyzed. It is found that the internal inductance of the plasma is closely related to the radial distance dRsep between the primary and secondary X-point surfaces on the outer mid-plane as well as the poloidal field of the last closed flux surface. Moreover, dRsep is alSO related to the distribution of the fast electrons driven by the injected lower-hybrid waves, which is partially responsible for the observed relation between dRsep and the internal inductance. The results here should therefore be helpful as a guide for future experiments on internal inductance control and long-pulse operations of the EAST and other tokamaks, as well as for detailed theoretical study of the underlying physics.

关 键 词：internal inductance dRsep EAST tokamak 

分 类 号：TL631.24[核科学技术—核技术及应用]