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Abstract

Ideal MHD stability considerations limit the range of operation of Tokamaks. Without invoking an eventual stabilization by a shell the onset of n = 1 instabilities and ballooning modes limit the maximum beta which can be confined with a given current. This limit is determined for a class of INTOR like plasmas, keeping the geometry fixed and varying the toroidal current I. A limited profile optimisation is carried out for each value of the current in order to maximize the volume averaged beta. It is found that the limiting beta increases essentially linearly with the current in the range q-s > 2 (q-I > 1.6), reaching 3.7 %.

Additional information

Authors: TROYON F, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE;GRUBER R, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE;SAURENMANN H ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Bibliographic Reference: WRITE TO CONFEDERATION SUISSE, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE, 21 AVENUE DES BAINS, CH-1007 (SWITZERLAND), MENTIONING REPORT LRP 230/83
Record Number: 1989122085300 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en