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Abstract

A device and method for the heating of plasma by resonance using Halbach transformers for magnetic field modulation. Forming the Halbach transformers of heating to the primary magnetic field coils of confinement in a typical ring cusp confinement device configuration may reduce high-voltage breakdown along coil supports. By heating the plasma transverse to the confinement field a greater number of particle species may be retained. The primary confinement field coil support is placed outboard of the plasma cusp region by extending lobed flanges from the plates of Bitter-type primary electromagnetic field coils into the outboard region and placing the holes for the coil supports through these flanges. This arrangement of coil and flange moves plasma bombardment from the cusp region to the outboard region thus moving impurity generation by coil support bombardment from the cusp region to an outer radius where impurity effects are less detrimental.

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First Claim