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Fast Particle Driven Alfvén Eigenmodes in Tokamaks

S. E. Sharapov

Fusion Science and Technology / Volume 57 / Number 2T / February 2010 / Pages 156-163

Equilibrium and Instabilities / Proceedings of the Ninth Carolus Magnus Summer School on Plasma and Fusion Energy Physics /

Instabilities of Alfvén Eigenmodes (AEs) are often excited by a super-Alfvénic population of fast ions accelerated with ion cyclotron resonance heating (ICRH) or produced by neutral beam injection (NBI) in present-day tokamaks. In view of the next-step burning plasma experiments with super-Alfvénic alpha-particles, the experimental data on AE instabilities is reviewed for large volume JET tokamak, high magnetic field C-MOD tokamak, and high-beta START and MAST tokamaks. The main types of AE instabilities are described and compared to theory.

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