Email this article Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST
- Authors: Zhao Y.A.1, Zhang X.M.1, Yu L.M.1, Xue E.B.1, Chen W.D.1, 2
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Affiliations:
- Department of Physics
- Institute of Plasma Physics
- Issue: Vol 44, No 10 (2018)
- Pages: 891-898
- Section: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186893
- DOI: https://doi.org/10.1134/S1063780X18100124
- ID: 186893
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Abstract
The fast-ion transport during neutral beam injection on the Experimental Advanced Superconducting Tokamak (EAST) is studied. Based on the NUBEAM and TRANSP codes, it is found that fast-ion transport is anomalous when the minimum safety factor (qmin) is about 2, while it is neoclassical when qmin is around 1. Neutral beam injection heating efficiency, plasma stored energy, and the total heating power are reduced when the fast ion transport is anomalous. The Alfvén continuum spectrum and the mode structures of toroidal Alfvén eigenmodes (AEs) are also calculated for comparison between neoclassical fast-ion transport and anomalous fast-ion transport. High-qmin discharge with anomalous fast-ion transport has more AE activity than that of lower qmin discharge with neoclassical fast-ion transport.
About the authors
Y. A. Zhao
Department of Physics
Email: zhangxm@ecust.edu.cn
China, Shanghai, 200237
X. M. Zhang
Department of Physics
Author for correspondence.
Email: zhangxm@ecust.edu.cn
China, Shanghai, 200237
L. M. Yu
Department of Physics
Email: zhangxm@ecust.edu.cn
China, Shanghai, 200237
E. B. Xue
Department of Physics
Email: zhangxm@ecust.edu.cn
China, Shanghai, 200237
W. D. Chen
Department of Physics
Email: zhangxm@ecust.edu.cn
China, Shanghai, 200237
Institute of Plasma Physics
Email: zhangxm@ecust.edu.cn
China, Hefei, 230031
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