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Abstract

Stability limits of highly elongated, D-shaped plasmas have been measured in the TCV tokamak. It is found that the plasma current is limited by a kink-type disruption, preceded by magnetohydrodynamic mode activity. The mode structure has been analyzed using magnetic fluctuation and soft x-ray diagnostics. Mode numbers, growth rates, and experimental stability limits are consistent with ideal and resistive MHD models, based on measured plasma shapes and profiles. These results provide the first experimental confirmation of previously predicted stability limits at high elongation.

Additional information

Authors: HOFMAN F, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);SAUTER O, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);REIMERDES H, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);FURNO I, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);POCHELON A, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH)
Bibliographic Reference: Article: Physical Review Letters, 81(1998)14, 2918-2921
Record Number: 199910388 / Last updated on: 1999-03-12
Category: PUBLICATION
Original language: en
Available languages: en