Crossed-field divertor for a plasma device

Details Crossed-field divertor for a plasma device Crossed-field divertor for a plasma device

Filed on

1978-11-24

Date issued

1981-02-24

Examiner

Behrend, Harvey E.

Other Related Categories

G21B 100

Type

Patent

Status

active

Patent number

042526094

Description

ABSTRACT:
A divertor for removal of unwanted materials from the interior of a magnetic plasma confinement device includes the division of the wall of the device into segments insulated from each other in order to apply an electric field having a component perpendicular to the confining magnetic field. The resulting crossed-field drift causes electrically charged particles to be removed from the outer part of the confinement chamber to a pumping chamber. This method moves the particles quickly past the saddle point in the poloidal magnetic field where they would otherwise tend to stall, and provides external control over the rate of removal by controlling the magnitude of the electric field.

REFERENCES:
patent: 2868991 (1959-01-01), Josephson et al.
patent: 3441775 (1969-04-01), Hammel et al.
patent: 4149931 (1979-04-01), Christensen
CONF-750905-P1, 9/75, p. 139, Consoli et al.
Nuclear Fusion, Special Suppl., 1974, pp. 17-25, Tenney.
J. of Nuclear Materials, vol. 63, 1976, pp. 91-95, McCracken.
Nuclear Fusion, vol. 16, No. 1, 2/76, pp. 148, 149, Maeda et al.
UWFDM-68, vol. 1, 3/74, pp. (III-A-1)-(III-A-3), (III-B-1)-(III-B-3), (III-D-1)-(III-D-4).
Trans. ANS, 6/77, pp. 508, 509.

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