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Abstract

Ideal magnetohydrodynamic (MHD) equilibrium and stability computer codes concentrate on the determination of the stable operating windows for magnetic plasma confinement devices and the identification of conditions which maximise the ratio beta of the plasma pressure to the magnetic field energy density. The effect of toroidal plasma currents, tailored to flow in the outerpart of the enclosed volume, on the global external ideal MHD properties of 3D equilibria that model the ATF torsatron in its standard configuration, are considered. If the current reduces the externally applied rotational transform, the stability properties are deteriorated, but if the current increases the transform, the stability properties are enhanced. Small tailored currents, easily produced with an ECRH current drive, modify the MHD stability properties significantly.

Additional information

Authors: COOPER W A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);FU G Y, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH);GRUBER R, GASOV-EPFL, Lausanne (CH);MERAZZI S, GASOV-EPFL, Lausanne (CH);SCHWENN U, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);ANDERSON D V, NERSC, Livermore (US)
Bibliographic Reference: Paper presented: Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna (IT), August 27-31, 1990
Availability: Available from (1) as Paper EN 35664 ORA
Record Number: 199110450 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en