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Title: Numerical study of Alfvén eigenmodes in the Experimental Advanced Superconducting Tokamak

Alfvén eigenmodes in up-down asymmetric tokamak equilibria are studied by a new magnetohydrodynamic eigenvalue code. The code is verified with the NOVA code for the Solovév equilibrium and then is used to study Alfvén eigenmodes in a up-down asymmetric equilibrium of the Experimental Advanced Superconducting Tokamak. The frequency and mode structure of toroidicity-induced Alfvén eigenmodes are calculated. It is demonstrated numerically that up-down asymmetry induces phase variation in the eigenfunction across the major radius on the midplane.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [3] ;  [4]
  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China)
  2. (China)
  3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)
  4. Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)
Publication Date:
OSTI Identifier:
22300145
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ASYMMETRY; EIGENFUNCTIONS; EIGENVALUES; EQUILIBRIUM; HT-7U TOKAMAK; NUMERICAL ANALYSIS; VARIATIONS