Global Hybrid Simulations of Energetic Particle-driven Modes in Toroidal Plasmas [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
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- 716 Kilobytes pages : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Science
United States. Department of Energy. Office of Scientific and Technical Information
- Global hybrid simulations of energetic particle-driven MHD modes have been carried out for tokamaks and spherical tokamaks using the hybrid code M3D. The numerical results for the National Spherical Tokamak Experiments (NSTX) show that Toroidal Alfven Eigenmodes are excited by beam ions with their frequencies consistent with the experimental observations. Nonlinear simulations indicate that the n=2 mode frequency chirps down as the mode moves out radially. For ITER, it is shown that the alpha-particle effects are strongly stabilizing for internal kink mode when central safety factor q(0) is sufficiently close to unity. However, the elongation of ITER plasma shape reduces the stabilization significantly.
- Published through SciTech Connect.
H.R. Strauss; W. Park; G.Y. Fu; E. Fredrickson; J. Breslau.
Princeton Plasma Physics Lab., Princeton, NJ (US)
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