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A survey of the magnetohydrodynamic (MHD) stability properties of three-dimensional (3-D) MHD configurations representing the Wendelstein 7-X (W7-X) stellarator experiment was performed with the Code for the Analysis for the Stability of 3-D Equilibria (CAS3D). This study confirms and elaborates previous indications on the structural characteristics of global MHD modes in stellarators. In particular these characteristics pertain to the compressibility of these modes, the equivalence of the decouples stability problems for the modes with different parities, and the separability of global from fine-scale perturbations within the same mode family. As to the W7-X stellarator experiment, the envisaged configurational class, providing the intended experimental flexibility, appears to offer scenarios of safely stable operation.

Additional information

Authors: NÜHRENBERG C, Max-Plank-Institut für Plasmaphysik, Garching bei München (DE);NUHRENBERG C, Max-Plank-Institut fur Plasmaphysik, Garching bei Munchen (DE)
Bibliographic Reference: Article: Physics of Plasmas, Vol.3 (1996) No. 6, pp. 2401-2410
Record Number: 199611194 / Last updated on: 1996-10-28
Original language: en
Available languages: en
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