A NON-LINEAR MODEL OF THE SAWTOOTH COLLAPSE IN TOKAMAS
The usual resistive reconnection models of the sawtooth phenomenon in tokamaks are inconsistent with recent experimental data from the large devices such as JET. A more likely description involves an ideal motion during the collapse phase, associated with an almost flat q-profile. In this paper a non-linear calculation of the final plasma configuration resulting from any initial equilibrium having q = 1 over some central region is presented. The problem is formulated both in cylindrical and toroidal geometry, and solved for example profiles.
Bibliographic Reference: REPORT CLM-P838, 1988, AVAILABILITY: UKAEA, ABINGDON, UK
Record Number: 1989126098000 / Last updated on: 1989-05-01
Available languages: en