JET-P(99)20

Suppression of Neoclassical Tearing Modes by the Magnetic Well in Shear-Optimised Tokamak Discharges

It is suggested that the neoclassical tearing modes in the shear-optimised discharges in tokamaks can be suppressed by the "magnetic well" effect. The stabilising effect is shown to be significantly increased by shaped magnetic surfaces, due to the combined influence of ellipticity and triangularity.
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JETP99020 72.93 Kb