Ideal MHD stability calculations for compact stellarators

Stability results for high- n ideal local pressure-driven instabilities (ballooning and interchange modes) are calculated from the COBRA and TERPSICHORE codes and compared for several low aspect ratio stellarators. Such a comparison is important because of the predominant roles that these codes are...

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Bibliographic Details
Published in:Computer physics communications 2001-11, Vol.141 (1), p.55-65
Main Authors: Sanchez, R., Isaev, M.Yu, Hirshman, S.P., Cooper, W.A., Fu, G.Y., Jimenez, J.A., Ku, L.P., Mikhailov, M.I., Monticello, D.A., Reiman, A.H., Subbotin, A.A.
Format: Article
Language:English
Subjects:
Ideal pressure-driven instabilities
Interchange and ballooning modes
Low aspect ratio
Magnetic coordinates
Magnetohydrodynamics
Stellarators
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Summary:Stability results for high- n ideal local pressure-driven instabilities (ballooning and interchange modes) are calculated from the COBRA and TERPSICHORE codes and compared for several low aspect ratio stellarators. Such a comparison is important because of the predominant roles that these codes are playing in the design of compact stellarators at several laboratories around the world. The code development required to reach the levels of convergence and accuracy needed for reliable operation at low aspect ratios is also described.
ISSN:0010-4655
1879-2944
DOI:10.1016/S0010-4655(01)00396-4