Axisymmetry stability of highly-elongated Tokamak plasma-a new method and initial results
- 1 April 1986
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 28 (4) , 705-715
- https://doi.org/10.1088/0741-3335/28/4/008
Abstract
A new method is presented for computing global axisymmetric instabilities of Tokamak plasmas in a conducting shell. The method uses a free-boundary equilibrium code to find displacment vectors compatible with ideal MHD. It is applied to the computation of vertical instability growth rates of highly-elongated, race-track shaped plasmas. Results obtained for up-down symmetric configurations are compared with ERATO calculations. The effects of plasma-wall distance, plasma pressure and current profile are analyzed. In addition, the gain in stability by asymmetric positioning of a given plasma in a given shell is evaluated.Keywords
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