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Author(s):
M.I. Mikhailov, K. Yamazaki
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Title:
Fast Particles Confinement in Stellarators with Both Poloidal-Pseudo-Symmetry and Quasi-Isodynamicity
Date of publication:
Apr. 2004
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Key words:
helical plasma, fast particles confinement, pseudo-symmetry, quasi-isodynamicity
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Abstract:
By analytical and computational consideration it is shown that the condition of quasi-isodynamicity for the configurations with poloidal direction of the contours of the magnetic field strength on the magnetic surfaces can be fulfilled with high enough accuracy for compact configuration. It is shown that for the configurations with toroidal direction of these contours the condition of quasi-isodynamicity is equivalent to the condition of quasi-symmetry, so that there is no the gap between these two conditions. The further optimization is required to stabilize the ballooning modes in the considered configuration.
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