Systems, methods, and apparatus for superconducting magnetic shielding
US7990662B2 · kind B2 · utility
32Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Sep 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F6/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A localized area is at least partially contained within a perimeter of a shield ring formed by a closed superconducting current path of a material that is superconductive below a critical temperature. The shield ring is at least partially within a perimeter of a compensation coil that is coupled to a current source. One or more measurement devices are responsive to magnetic fields in the vicinity of the localized area, allowing compensation by controlling current to the compensation coil. A heater can raise temperature of the shield ring out of a superconducting condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.