Stellarator equilibria and the problem of position control | Zendy

J. P. Freidberg | Zendy; Peter Politzer | Zendy; Philip Rosenau | Zendy

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Stellarator equilibria and the problem of position control

Author(s) -

J. P. Freidberg,

Peter Politzer,

Philip Rosenau

Publication year - 1984

Publication title -

the physics of fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.125

0

eISSN - 2163-4998

pISSN - 0031-9171

DOI - 10.1063/1.864833

Subject(s) - stellarator , physics , magnetohydrodynamic drive , magnetohydrodynamics , toroid , position (finance) , plasma , transient (computer programming) , mechanics , flux (metallurgy) , field (mathematics) , classical mechanics , nuclear physics , materials science , mathematics , pure mathematics , metallurgy , finance , computer science , economics , operating system

A class of low‐β stellarator magnetohydrodynamic (MHD) equilibria with β∼(a/R0)2 is introduced, and the corresponding toroidal shift is calculated. It is shown that an apparent paradox exists with regard to the problem of position control in that a vertical field is capable of shifting vacuum flux surfaces, but produces no net body force on a current‐free stellarator. This paradox is resolved by an analysis of the transient response of the plasma and demonstrates how the vertical field can be used as a means of position control.

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