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Abstract

Helically symmetric equilibria without net longitudinal current and their linear MHD stability are studied with the HASE quasi-analytical equilibrium code and the HERA 2D spectral code. The modes investigated comprise low-m number internal, external, high-m number modes obtained with the large-k-number option of the HERA code and localized (k -> infinite) ballooning modes. Stable straight Heliotron equilibria with beta up to beta = 0.29 are obtained. The correspondence between instability as obtained from the ballooning mode equation in part of the plasma volume and from finite-k analysis is discussed.

Additional information

Authors: MERKEL P, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND.;NUEHRENBERG J, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND.;GRUBER R, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND.;TROYON F MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY), MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND.;CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND., MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, LAUSANNE (SWITZERLAND) LAUSANNE - SWITZERLAND.
Bibliographic Reference: NUCLEAR FUSION, VOL. 23 (1983), NO. 8, PP. 1061-1069
Record Number: 1989122029800 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en