Effect of shear in toroidal rotation on toroidicity induced Alfven eigenmodes
- 1 November 1997
- journal article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 37 (11), 1559-1568
- https://doi.org/10.1088/0029-5515/37/11/i05
Abstract
It is found that low-n toroidicity induced Alfven eigenmodes (TAEs) excited by ion cyclotron resonance heating can be stabilized by counter-tangential neutral beam injection in JT-60U. The deformation of the radial structure of the TAE mode due to the shear in toroidal rotation is a plausible stabilizing mechanism. This mechanism is also expected to be effective in suppressing high-n TAE modes. Real time control of TAE mode amplitudes using toroidal rotation control is possible for burn control in fusion reactorsKeywords
This publication has 19 references indexed in Scilit:
- Alpha-Particle-Driven Toroidal Alfvén Eigenmodes in the Tokamak Fusion Test ReactorPhysical Review Letters, 1997
- Overview of Alfven eigenmode experiments in JETNuclear Fusion, 1995
- Mode structure and stability of toroidal Alfven eigenmodes in ITER and TFTR DT plasmasNuclear Fusion, 1995
- Stability of neutral beam driven TAE modes in DIII-DNuclear Fusion, 1993
- Loss of energetic beam ions during TAE instabilitiesNuclear Fusion, 1993
- Alpha-particle losses from toroidicity-induced Alfvén eigenmodes. Part II: Monte Carlo simulations and anomalous alpha-loss processesPhysics of Fluids B: Plasma Physics, 1992
- Continuum damping of high-mode-number toroidal Alfvén wavesPhysical Review Letters, 1992
- An investigation of beam driven Alfvén instabilities in the DIII-D tokamakNuclear Fusion, 1991
- Low-n shear Alfvén spectra in axisymmetric toroidal plasmasPhysics of Fluids, 1986
- High-n ideal and resistive shear Alfvén waves in tokamaksAnnals of Physics, 1985