Stability of high-beta large-aspect-ratio tokamaks
1991; American Institute of Physics; Volume: 3; Issue: 12 Linguagem: Inglês
10.1063/1.859767
ISSN2163-503X
Autores Tópico(s)Nuclear reactor physics and engineering
ResumoHigh-beta (β≫ε/q2) large-aspect-ratio (ε≪1) tokamak equilibria are shown to be always stable to ideal magnetohydrodynamics (MHD) modes that are localized about a flux surface. Both the ballooning and interchange modes are shown to be stable. This work uses the analytic high-beta large-aspect-ratio tokamak equilibria developed by Cowley et al. [Phys. Fluids B 3, 2069 (1991)], which are valid for arbitrary pressure and safety factor profiles. The stability results make no assumption about these profiles nor the shape of the boundary.
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