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Abstract

The ballooning mode stability and the Mercier criterion of the EPEIUS compact tokamak/torsatron hybrid proposal is examined. The EPEIUS coils are modelled by single straight filament segments located at their respective centres. The vacuum magnetic fields are determined using the Biot-Savart law and serve as input for the free boundary version of the 3-dimensional VMEC equilibrium code. Sequences of equilibria at finite beta with zero net toroidal current within each flux surface are studied and a sequence with variable hollow toroidal current fixed at 180 kA and constant beta = 6.75% is considered. The inverse rotational transform q at the plasma edge is slightly larger than 2 for these values of current and beta. The local ideal magnetohydrodynamic (MHD) stability properties of the configurations have been investigated with the relevant modules of the 3-dimensional TERPSICHORE code.

Additional information

Authors: COOPER W A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);ARDELEA A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH)
Bibliographic Reference: Article: Proceedings of 24th EPS Conference on Controlled Fusion and Plasma Physics, Berchtesgaden 9-13 June 1997
Record Number: 199810031 / Last updated on: 1998-02-03
Category: PUBLICATION
Original language: en
Available languages: en
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