Stability of high-beta large-aspect-ratio tokamaks

S. C. Cowley

doi:10.1063/1.859767

Stability of high-beta large-aspect-ratio tokamaks

S. C. Cowley

Astrophysical Sciences

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

High-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.

Original language	English (US)
Pages (from-to)	3357-3362
Number of pages	6
Journal	Physics of Fluids B
Volume	3
Issue number	12
DOIs	https://doi.org/10.1063/1.859767
State	Published - 1991

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
General Physics and Astronomy
Fluid Flow and Transfer Processes

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10.1063/1.859767

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abstract = "High-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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N2 - High-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.

AB - High-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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ER -

Stability of high-beta large-aspect-ratio tokamaks

Abstract

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