Patent ID: 11915850
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. The apparatus of claim 19, further comprising:
a first power supply coupled to the inner electromagnetic cos θ coil ring configured to supply a first current to the first set of inner coils;
a second power supply coupled to the outer electromagnetic cos θ coil ring configured to supply a second current to the second set of outer coils; and
a controller communicatively coupled to the first and second power supplies, wherein the controller is configured to adjust at least one of magnitude or a direction of at least one of the first or second currents to control a magnitude and direction of a constant transverse B-field produced by the inner electromagnetic cos θ coil ring and the outer electromagnetic cos θ coil ring.