High-field magnets using high-critical-temperature superconducting thin films
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsFred Mitlitsky, Ronald W. Hoard
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Abstract
High-field magnets fabricated from high-critical-temperature superconducting ceramic (HTSC) thin films which can generate fields greater than 4 Tesla. The high-field magnets are made of stackable disk-shaped substrates coated with HTSC thin films, and involves maximizing the critical current density, superconducting film thickness, number of superconducting layers per substrate, substrate diameter, and number of substrates while minimizing substrate thickness. The HTSC thin films are deposited on one or both sides of the substrates in a spiral configuration with variable line widths to increase the field.
Claims23
A high-field magnet comprising:
- a plurality of disk-like substrates, said disk-like substrates being of variable thickness;
- each of said substrates having at least one pattern of high-critical-temperature superconducting material having a thickness of 0.5-1 .mu.m deposited on at least one side thereof;
- said disk-like substrates being stacked such that thinner substrates are located in an axially central location and thicker substrates are located in an axially outer location, such that the thickness of the substrates increases in thickness from the central location to the outer location.
A superconducting magnet including at least five disk-like axially stacked substrates, having bores extending there through, wherein:
- said substrates being positioned in groups of different thicknesses such that thinner substrates are located in a central axial region;
- each of said substrates, except an outer two substrates, being provided with at least one layer of YBa.sub.2 Cu.sub.3 O.sub.7-x (YBCO) having a thickness of up to 1 .mu.m on opposite sides thereof;
- said layer of YBCO defining a spiral configuration having a plurality of loops;
- at least a layer of insulating material on an outer layer of YBCO;
- and
- superconducting means for at least interconnecting certain of said layers of YBCO of said substrates.
Dependencies are inferred from the claim text.