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Abstract

The n = 0 axisymmetric mode and the n = 1 free boundary kink mode impose important constraints on the current configuration of Tokamak plasmas, even at low beta. These constraints become more severe as the plasma cross- section is elongated in the vertical direction. The n = 1 kink manifests itself in the form of various instabilities. These can be classified on a (g-o,g-s) operational diagram. We show how the stable operating regime of racetrack shaped Tokamak plasmas varies with elongation at low beta. The n = 0 mode can be stabilized by an active feedback system with a nearby conducting wall, but the proximity of the wall is limited by technological considerations, so this further restricts the stable operating regime.

Additional information

Authors: ROY A, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);TURNBULL A D, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);SAUTER O, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);NICLI S, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);TROYON F CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND), CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND)
Bibliographic Reference: 13TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA HEATING, SCHLIERSEE (GERMANY), APRIL 14-18, 1986 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32539 ORA
Availability: Can be ordered online
Record Number: 1989125018400 / Last updated on: 1987-02-01
Category: PUBLICATION
Available languages: en
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