Florida State University Research Foundation, Inc.

Ulf Peter Trociewitz

David Larbalestier

David K Hilton

Matthieu Dalban-Canassy

Eric E Hellstrom

Ernesto S Bosque

Maxime R Matras

William L Starch

Jianyi Jiang

Peng S Chen

Charles Lamar English

Youri Viouchkov

Andrew David Whittington

Youngjae Kim

Dmytro V Abraimov

William R Sheppard

Alexander Mankin

Joe W Whittington

Hubertus W Weijers

A coil for a magnet includes a superconductor comprising a BiSrCaCuO(Bi-2212) high temperature superconductor (HTS) filament. The HTS filament can be encased in a protective conducting sheath. The superconductor is wound to form a coil. A reinforcement winding is wound with the superconductor. The reinforcement winding can be a wire, a tape, a band, and an outer layer encasing the superconductor filament. A method of making a coil for a magnet, a composite superconductor for a magnet, and a magnet are also disclosed.

System and method to manage high stresses in Bi-2212 wire wound compact superconducting magnets

Methods of pre-densifying a metal wire containing superconductor materials are provided. Superconductor materials containing the pre-densified wires also are provided. The wires may be pre-densified by subjecting a metal wire that includes one or more filament cavities in which a superconductor precursor powder is disposed to a temperature and a first pressure for a time sufficient to densify the superconductor precursor powder to form a pre-densified metal wire, wherein the temperature is less than the melting point of the superconductor precursor powder, and the first pressure is sufficient, at the temperature, to compress at least a portion of the metal wire.

Densified superconductor materials and methods

The present invention provides a system and method for producing superconducting joints between superconductive segments of a Bi-2212 high-temperature superconducting (HTS) conductor, thereby eliminating the heat generating resistive joints that are commonly known in the art for connecting two or more smaller Bi-2212 conductive segments to create an Bi-2212 conductor of adequate length.

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A device and method for sheathing shrink tubing onto materials such as wire, tape, or cables. The device cannot only sheath short lengths of shrink tubing onto material, but also sheath long lengths shrink tubing onto material. Varying embodiments of this device can insulate whole lengths of material with shrink tubing as well as covering certain sections of material for a more precise application.

Shrink tube insulation apparatus

An electric joint design to be used in electromagnetic coils made with high-temperature superconducting tape, aspected wire, or cable. A terminal member contains an engraved twist-bend contour, which receives the coil and changes the direction of the coil by about 90 degrees without any hard-bends. A current lead is aligned with terminal section of the coil establishing an electric joint whose length is not limited by the coil geometry. Resistance is distributed along the length of the electric joint to reduce heat generation. The electric joint is placed away from the area where the magnetic forces are high to eliminate the problem of helium gas becoming trapped.

Electric joint design to be used in electromagnetic coils made with high-temperature superconducting tape, aspected wire, or cable

A novel method and structure for creating a high-temperature superconducting tape. The concept of the invention is to use a conductor insulation which not only electrically insulates the conductors of the coil windings from each other, but also mechanically insulates them from the much stronger encapsulant. The insulation material mechanically decouples the conductor from the encapsulant at the boundary between them, thereby preventing damage as a result of thermal and electromagnetic shearing forces. The proposed structure allows the encapsulant to continue performing its functions of preventing coarse motion and stabilizing the coil as a whole, while allowing fine relative displacements of individual coil windings caused by radial stress gradients.

Mechanical decoupling in high-temperature superconducting tapes

Growing community of inventors

Crawfordville, FL, United States of America

Ulf Peter Trociewitz