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US 2026/0147151 A1Published application
Dense linear ramp bragg grating pattern for quench detection in high temperature superconducting magnets
AssigneeCommonwealth Fusion Systems LLC
InventorsOwen Beals Duke, Erica Elizabeth Salazar, Matthew Hicks
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Abstract
Quench detection apparatuses and methods for high-temperature-superconducting (HTS) cables are described. An optical fiber may form part of the HTS cable and may include a plurality of fiber Bragg gratings (FBGs), at least some of which exhibit different center wavelengths. The FBGs are arranged in some embodiments such that the center wavelengths of the respective FBGs increase along the length of the HTS cable.
Claims21
A high-temperature-superconducting (HTS) cable, comprising:
- a high-temperature superconductor;
- and
- an optical fiber thermally coupled to the high-temperature superconductor and comprising a plurality of optical gratings having respective center wavelengths, wherein:
- the respective center wavelengths increase along a length of the HTS cable, and
- the respective center wavelengths differ from center wavelengths of nearest neighbor optical gratings by less than a full width at half max spectral response of the optical gratings.
2 more elements
A high-temperature superconductor (HTS) cable, comprising:
- an elongated conductive former having a centrally located cooling channel and a plurality of HTS tape stack channels disposed at its periphery;
- a conductive jacket surrounding the elongated conductive former;
- a plurality of HTS tape stacks disposed in respective HTS tape stack channels of the plurality of HTS tape stack channels;
- and
- a plurality of optical fibers thermally coupled to the plurality of HTS tape stacks, each of at least two optical fibers of the plurality of optical fibers comprising a plurality of optical gratings of increasing center wavelength positioned along a length of the respective optical fiber.
2 more elements
21-45. (canceled)
Dependencies are inferred from the claim text.