Systems and methods for magnetic shielding
AssigneeD-Wave Systems Inc.
InventorSergey V. Uchaykin
Life of this patent
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Abstract
Systems and methods for magnetic shielding are described. A magnetic shield formed of a material having a high magnetic permeability may be degaussed using a toroidal degaussing coil. The toroidal degaussing coil may enclose at least a portion of the shield. Magnetic field gradients may be actively compensated using multiple magnetic field sensors and local compensation coils. Trapped fluxons may be removed by an application of Lorentz force wherein an electrical current is passed through a superconducting plane.
Claims14
A magnetic shielding system comprising:
- a shield structure having a longitudinal center axis;
- and
- a degaussing coil, wherein the degaussing coil is wrapped around at least a portion of the shield structure in a toroidal configuration such that the degaussing coil encloses at least a portion of the shield structure and at least a portion of the degaussing coil is parallel to the longitudinal center axis of the shield structure.
A system for compensating for a magnetic field gradient across an area, the system comprising:
- at least two magnetic field sensors respectively positioned at opposite ends of the area;
- at least two compensation coils respectively positioned proximate opposite ends of the area;
- and
- at least a first current source.
A superconducting chip comprising:
- a plurality of superconducting devices;
- a superconducting plane positioned above the plurality of superconducting devices;
- a first current lead electrically coupled to the superconducting plane;
- and
- a second current lead electrically coupled to the superconducting plane.
Dependencies are inferred from the claim text.