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Title: Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST

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 (q{sub min}) is about 2, while it is neoclassical when q{sub min} 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-q{sub min} discharge with anomalous fast-ion transport has more AE activity than that of lower q{sub min} discharge with neoclassical fast-ion transport.

Authors:
; ; ; ;  [1];
  1. East China University of Science and Technology, Department of Physics (China)
Publication Date:
OSTI Identifier:
22763219
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 44; Journal Issue: 10; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM INJECTION; BEAM INJECTION HEATING; EFFICIENCY; HT-7U TOKAMAK; NEOCLASSICAL TRANSPORT THEORY; PLASMA; STORED ENERGY

Citation Formats

Zhao, Y. A., Zhang, X. M., E-mail: zhangxm@ecust.edu.cn, Yu, L. M., Xue, E. B., Chen, W. D., and Collaboration: EAST Team. Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST. United States: N. p., 2018. Web. doi:10.1134/S1063780X18100124.
Zhao, Y. A., Zhang, X. M., E-mail: zhangxm@ecust.edu.cn, Yu, L. M., Xue, E. B., Chen, W. D., & Collaboration: EAST Team. Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST. United States. doi:10.1134/S1063780X18100124.
Zhao, Y. A., Zhang, X. M., E-mail: zhangxm@ecust.edu.cn, Yu, L. M., Xue, E. B., Chen, W. D., and Collaboration: EAST Team. Mon . "Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST". United States. doi:10.1134/S1063780X18100124.
@article{osti_22763219,
title = {Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST},
author = {Zhao, Y. A. and Zhang, X. M., E-mail: zhangxm@ecust.edu.cn and Yu, L. M. and Xue, E. B. and Chen, W. D. and Collaboration: EAST Team},
abstractNote = {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 (q{sub min}) is about 2, while it is neoclassical when q{sub min} 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-q{sub min} discharge with anomalous fast-ion transport has more AE activity than that of lower q{sub min} discharge with neoclassical fast-ion transport.},
doi = {10.1134/S1063780X18100124},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 10,
volume = 44,
place = {United States},
year = {2018},
month = {10}
}