Patent ID: 11959174
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 9:
10. A system comprising:
a chamber comprising:
an interior volume and an exterior surface disposed around the interior volume; and
a substrate support in the interior volume;

a rotational magnetic housing disposed about the chamber, the rotational magnetic housing comprising:
a sleeve;
a plurality of magnets coupled to the sleeve, the plurality of magnets configured to travel along a path about the exterior surface of the chamber; and

a plurality of shunt doors disposed between the exterior surface of the chamber and the sleeve; and
a controller configured to execute instructions to cause each of the shunt doors to move relative to the magnets, and to cause the magnets to move relative to the plurality of shunt doors from an open position to a closed position to shield the interior volume of the chamber from magnetic fields from the plurality of magnets when in the closed position and to reduce an intensity of the magnetic fields in the interior volume in the closed position relative to the open position.