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Abstract

Pressure driven external kink modes are believed to set an upper limit for the values of beta in tokamaks. Extensive investigations of the beta limit dependence on plasma geometry and profiles were performed for single axis plasmas. However self consistent modeling of divertor plasma configurations with separatrix at the boundary requires taking into account plasma outside the separatrix. This is evident in the case of typical H-mode profiles with current density and pressure gradients non vanishing at the separatrix. The same question holds for doublet configurations. The codes CAXE and KINX were developed to compute equilibrium and stability of the axisymmetric plasma configurations with separatrix.

Additional information

Authors: DEGTYAREV L ET AL, 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
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