A method comprises disposing one or more continuous fibers, wherein the one or more continuous fibers are at least partially embedded in high temperature superconducting component powders. The fiber of the one or more continuous fibers comprises a curved fiber that comprises a hoop or a spiral. The method further comprises heating the high temperature superconducting component powders and the one or more continuous fibers and cooling the high temperature superconducting component powders and the one or more continuous fibers. The cooling generates a high temperature superconducting material.

A superconducting magnet system having a dipole magnet, a superconducting short-circuited secondary coil(s), a magnetizer, and a magnetizing primary coil. The dipole magnet comprises a magnet core having along its diameter a core back leg and a magnet gap. The High Temperature Superconducting (HTS) secondary coil(s) enwrap the core back leg of the dipole magnet. The magnetizer, positioned in magnetic communication with the dipole magnet, creates a closed magnetic circuit about the magnet gap. The non-superconducting magnetizing primary coil enwraps the magnetizer substantially opposite the secondary coil(s) with respect to the magnet gap. The magnetizing primary coil generates a common magnetic flux with the superconducting short-circuited secondary coil(s), initially operating in a non-superconducting state. Cooling the secondary coil(s) to a superconducting state transitions operation to frozen flux mode. After depowering the magnetizing primary coil, moving the magnetizer away from the magnet gap leaves the dipole magnet in persistent current mode.

Described herein are concepts, system and techniques which provide a means to construct robust high-field superconducting magnets using simple fabrication techniques and modular components that scale well toward commercialization. The resulting magnet assembly—which utilizes non-insulated, high temperature superconducting tapes (HTS) and provides for optimized coolant pathways—is inherently strong structurally, which enables maximum utilization of the high magnetic fields available with HTS technology. In addition, the concepts described herein provide for control of quench-induced current distributions within the tape stack and surrounding superstructure to safely dissipate quench energy, while at the same time obtaining acceptable magnet charge time. The net result is a structurally and thermally robust, high-field magnet assembly that is passively protected against quench fault conditions.

In many cases after degaussing the field distribution in a magnetic material there may be regions within the magnetic material that have ordered domains that contribute a remnant field. There is the need to reduce or eliminate non-uniform fields within a volume of interest left after degaussing a magnetic shield. Degaussing coils surrounding a metal shield can be used to favorably order magnetic domains within the material to counteract the remnant fields left behind following imperfect degaussing. The remnant field value can be measured and a small current may be applied through the degaussing coils. After removing the current, the field can be measured again and a higher current may be applied again through the coils. Repeated applications of currents and field measurement will progressively order domains in the direction of the applied field, resulting in a reduction of the net field and lower field gradient across the volume of interest.

A method of manufacturing an HTS coil is provided. The method comprises winding an ITS coil cable to produce a coil having a plurality of turns. During winding of a turn of the coil, one or more HTS shunt cables are placed adjacent to the previous turn of the coil along a first arc of the coil, and then the turn is wound such that the HTS shunt cable is sandwiched between the turn and the previous turn of the coil such that current can be shared between the HTS shunt cable and the HTS coil cable.

In a step of inserting each of a plurality of disk-shaped windings into a recessed groove portion of a corresponding one of a plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings is inserted in a state where an outer circumferential surface of each of the plurality of disk-shaped windings is spaced apart from a bottom surface of the recessed groove portion of a corresponding one of the plurality of ring-shaped fixing portions. In a step of bringing the outer circumferential surface of each of the plurality of disk-shaped windings into direct or indirect contact with the bottom surface of the recessed groove portion of the corresponding one of the plurality of ring-shaped fixing portions, each of the plurality of disk-shaped windings and an outer frame portion are cooled and contracted for contact.

Described herein are concepts, system and techniques which provide a means to construct robust high-field superconducting magnets using simple fabrication techniques and modular components that scale well toward commercialization. The resulting magnet assembly—which utilizes non-insulated, high temperature superconducting tapes (HTS) and provides for optimized coolant pathways—is inherently strong structurally, which enables maximum utilization of the high magnetic fields available with HTS technology. In addition, the concepts described herein provide for control of quench-induced current distributions within the tape stack and surrounding superstructure to safely dissipate quench energy, while at the same time obtaining acceptable magnet charge time. The net result is a structurally and thermally robust, high-field magnet assembly that is passively protected against quench fault conditions.

The present invention provides: a compound superconducting twisted wire in which non-adhesiveness between compound superconducting strands or separation easiness after adhesion is improved while a strength against tension is improved to a degree to be equivalent to or stronger than that of a conventional compound superconducting twisted wire; and a rewinding method thereof. The compound superconducting twisted wire 1 of the present invention includes a plurality of compound superconducting strands 10 being twisted to form a twisted structure, in which each of the compound superconducting strands 10 includes a compound superconductor part 11, a reinforcing part 12 and a stabilizing part 13, in which the compound superconductor part 11 includes a plurality of compound superconducting filaments 15 and a first matrix 16, the compound superconducting filaments 15 each including a compound superconducting phase, in which the reinforcing part 12 is disposed on an outer circumferential side of the compound superconductor part, and comprises a plurality of reinforcing filaments 18 and a second matrix 19, in which the stabilizing part 13 is disposed on at least one side of an inner circumferential side and an outer circumferential side of the reinforcing part. In the compound superconducting twisted wire, a volume ratio of the reinforcing part relative to the compound superconducting strand is larger than a volume ratio of the compound superconductor part relative to the compound superconducting strand, or a metal layer 20 with a thickness of 2 μm or less is formed on a surface of the compound superconducting strand for preventing thermal fusion between the compound superconducting strands.

A method of manufacturing an HTS coil is provided. The method comprises winding an HTS coil cable to produce a coil having a plurality of turns. During winding of a turn of the coil, one or more HTS shunt cables are placed adjacent to the previous turn of the coil along a first arc of the coil, and then the turn is wound such that the HTS shunt cable is sandwiched between the turn and the previous turn of the coil such that current can be shared between the HTS shunt cable and the HTS coil cable.

Tapes and coils for superconducting magnets are provided, along with methods of making the tapes and coils. In one embodiment, the coil includes a rare earth barium copper oxide (REBCO) superconducting tape; and a thin resistive layer of copper oxide, Cr, Ni, or Ni—P substantially coated onto the REBCO superconducting tape, wherein the coated REBCO superconducting tape is wound into a coil form. In another embodiment, the coil includes at least two REBCO superconducting tapes; and a stainless steel tape interlayer disposed between the at least two REBCO superconducting tapes, wherein the stainless steel tape comprises a plating layer of nickel or copper, and wherein the at least two REBCO superconducting tapes together with the stainless steel tape interlayer are wound into a coil form.