Anomalous Fast-Ion Transport During Neutral Beam Injection on EAST
- East China University of Science and Technology, Department of Physics (China)
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.
- OSTI ID:
- 22763219
- Journal Information:
- Plasma Physics Reports, Vol. 44, Issue 10; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-780X
- Country of Publication:
- United States
- Language:
- English
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