| CPC G21B 1/13 (2013.01) [G21B 1/055 (2013.01)] | 10 Claims |
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1. A stellarator fusion reactor comprising:
a toroidal vacuum vessel having an interior surface, a blanket adjacent to the interior surface, and a plasma-facing component adjacent to an interior portion of the blanket;
a core plasma positioned within the toroidal vacuum vessel,
a mantle plasma positioned within the toroidal vacuum vessel, wherein the mantle plasma forms a mantle around the core plasma, such that the mantle plasma is between the core plasma and the plasma-facing component;
at least one vacuum pump external to the toroidal vacuum vessel;
at least one pumping duct directly fluidly connecting an interior region of the toroidal vacuum vessel to the at least one vacuum pump, with no divertor or limiter where the pumping duct meets the toroidal vacuum vessel;
a plurality of external magnets forming a confining magnetic field and a stochastic magnetic field;
wherein the confining magnetic field is three-dimensional and toroidal and comprises a last flux surface (LCFS) surrounding the core plasma;
wherein the stochastic magnetic field surrounds the confining magnetic field outside of the last close flux surface (LCFS), and
wherein the mantle plasma is positioned within the stochastic magnetic field,
wherein the mantle plasma is in an opaque condition configured to prevent gas adjacent to the plasma-facing component from penetrating to the confined plasma,
wherein the mantle plasma has a high collisionality,
wherein the stochastic magnetic field uniformly disperses power from the core plasma such that a peak power density on the plasma-facing component is equal to an average power density of the plasma facing component.
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