Beam limiter for thermonuclear fusion devices

Details Beam limiter for thermonuclear fusion devices Beam limiter for thermonuclear fusion devices

G - Physics

21

B

359/1

G21B 1/00 (2006.01) H05H 1/00 (2006.01) H05H 1/12 (2006.01)

Patent

CA 1058335

ABSTRACT OF THE DISCLOSURE A beam limiter circumscribes the interior surface of a vacuum vessel to inhibit collisions of contained plasma and the vessel walls. The cross section of the material making up the limiter has a flatsided or slightly concave portion of increased width towards the plasma and portions of decreased width towards the interior surface of the vessel. This configuration is designed to prevent a major fraction of the material sputtered, vaporized and blistered from the limiter from reaching the plasma. It also allows adequate heat transfer from the wider to the narrower portions. The preferred materials for the beam limiter are solids of sintered, particulate materials of low atomic number with low vapor pressure and low sputtering and blistering yields.

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