Three-dimensional linear peeling-ballooning theory in magnetic fusion devices

T. Weyens, R. Sánchez, L. García, A. Loarte, G. Huijsmans

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

Ideal magnetohydrodynamics theory is extended to fully 3D magnetic configurations to investigate the linear stability of intermediate to high n peeling-ballooning modes, with n the toroidal mode number. These are thought to be important for the behavior of edge localized modes and for the limit of the size of the pedestal that governs the high confinement H-mode. The end point of the derivation is a set of coupled second order ordinary differential equations with appropriate boundary conditions that minimize the perturbed energy and that can be solved to find the growth rate of the perturbations. This theory allows of the evaluation of 3D effects on edge plasma stability in tokamaks such as those associated with the toroidal ripple due to the finite number of toroidal field coils, the application of external 3D fields for elm control, local modification of the magnetic field in the vicinity of ferromagnetic components such as the test blanket modules in ITER, etc.
Original languageEnglish
Pages (from-to)42507
Number of pages14
JournalPhysics of Plasmas
Volume21
Issue number4
DOIs
Publication statusPublished - 1 Apr 2014
Externally publishedYes

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