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Abstract

MHD stability limits were studied for doublet plasma configurations using the equilibrium code CAXE and the stability code KINX. Beta limits have been found against ballooning and n = 1 external kink mode stability. For doublet plasmas in the TCV tokamak the beta limits are close to the values obtained for a plasma with a single magnetic axis and the same overall elongation. The current limit against kink modes is lower in doublets, but the maximal beta is obtained at almost the same value of the current. Axisymmetric n = 0 mode growth rates with resistive wall were obtained with the KINX-W code. A comparison shows that the axisymmetric stability of doublets is much better than that of a single axis plasma with the same overall elongation.

Additional information

Authors: DEGTYAREV L, Russian Academy of Sciences, Keldysh Institute of Applied Mathematics, Moscow (RU);MARTYNOV A, Russian Academy of Sciences, Keldysh Institute of Applied Mathematics, Moscow (RU);MEDVEDEV S, Russian Academy of Sciences, Keldysh Institute of Applied Mathematics, Moscow (RU);TROYON F, CRPP, EPF Lausanne (CH);VILLARD L, CRPP, EPF Lausanne (CH)
Bibliographic Reference: Article: Proceedings of the 21st EPS Conference on Controlled Fusion and Plasma Physics, pp. 556-559
Record Number: 199510146 / Last updated on: 1995-08-22
Category: PUBLICATION
Original language: en
Available languages: en