Kinetic equilibrium reconstruction for the NBI-and ICRH-heated H-mode plasma on EAST tokamak

Zhen ZHENG (郑振); Nong XIANG (项农); Jiale CHEN (陈佳乐); Siye DING (丁斯晔); Hongfei DU (杜红飞); Guoqiang LI (李国强); Yifeng WANG (王一丰); Haiqing LIU (刘海庆); Yingying LI (李颖颖); Bo LYU (吕波); Qing ZANG (臧庆)

doi:10.1088/2058-6272/aab262

Plasma Science and Technology > 2018 > 20(6): 65103-065103. > DOI: 10.1088/2058-6272/aab262

Zhen ZHENG (郑振), Nong XIANG (项农), Jiale CHEN (陈佳乐), Siye DING (丁斯晔), Hongfei DU (杜红飞), Guoqiang LI (李国强), Yifeng WANG (王一丰), Haiqing LIU (刘海庆), Yingying LI (李颖颖), Bo LYU (吕波), Qing ZANG (臧庆). Kinetic equilibrium reconstruction for the NBI-and ICRH-heated H-mode plasma on EAST tokamak[J]. Plasma Science and Technology, 2018, 20(6): 65103-065103. DOI: 10.1088/2058-6272/aab262

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Kinetic equilibrium reconstruction for the NBI-and ICRH-heated H-mode plasma on EAST tokamak

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

Funds: This work was supported by National Key R&D Program of China under Grant No. 2017YFE0300400, National Natural Science Foundation of China under Grant Nos. 11475220, 11405218, 11575248, the National Magnetic Confinement Fusion Science Program of China under Contracts No. 2014GB106001. This work was also sponsored in part by Youth Innovation Promotion Association Chinese Academy of Sciences (Grant No. 2016384).

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Received Date: October 17, 2017

Graphical Abstract

Abstract

Abstract

The equilibrium reconstruction is important to study the tokamak plasma physical processes. To analyze the contribution of fast ions to the equilibrium, the kinetic equilibria at two time-slices in a typical H-mode discharge with different auxiliary heatings are reconstructed by using magnetic diagnostics, kinetic diagnostics and TRANSP code. It is found that the fast-ion pressure might be up to one-third of the plasma pressure and the contribution is mainly in the core plasma due to the neutral beam injection power is primarily deposited in the core region. The fast-ion current contributes mainly in the core region while contributes little to the pedestal current. A steep pressure gradient in the pedestal is observed which gives rise to a strong edge current. It is proved that the fast ion effects cannot be ignored and should be considered in the future study of EAST.
- kinetic equilibrium reconstruction,
- NBI,
- ICRH,
- pressure gradient,
- edge current,
- fast ions

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References (50)

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