Cable-in-conduit conductor based on ReBCO isotropic superconducting strands

Abstract

The invention belongs to the field of superconducting electrical technology, and particularly relates to a cable-in-conduit conductor based on ReBCO isotropic superconducting strands. In view of the disadvantages of the existing cable-in-conduit conductor prepared from a low-temperature superconductor, such as low critical current density, low critical magnetic field intensity, low operating temperature, small temperature field and poor mechanical property, the invention presents a cable-in-conduit conductor based on ReBCO isotropic superconducting strands. The cable-in-conduit conductor is composed of a center conductor, ReBCO isotropic superconducting strands, a metal sheath, and a cooling channel. The ReBCO isotropic superconducting strands are closely arranged and spirally wound aroundthe center conductor as sub strands. Complete transposition can be realized for the ReBCO isotropic superconducting strands. The cable-in-conduit conductor has the advantages of good critical currentisotropy, high operating temperature, high operating current density, simple production process, suitability for large-scale production, and the like. The application of ReBCO isotropic superconducting strands in nuclear fusion large-scale superconducting magnet coils and other high-energy physical devices is expanded.

Description

technical field [0001] The invention belongs to the technical field of superconducting technology, in particular to an in-tube cable conductor based on ReBCO isotropic superconducting strands. Background technique [0002] With the continuous development of science and technology, controlled nuclear fusion is expected to become a new energy source with high efficiency, no pollution and sustainable development. The current main device for nuclear fusion reaction is the Tokmak reactor. Its magnet system is composed of superconducting large-scale magnet coils. The magnet coils generate a magnetic field to restrict the movement of plasma and carry out nuclear fusion reactions. For example, in ITER (International Thermonuclear Experimental Reactor), the reactor needs to generate a plasma ring with a central magnetic field strength of 6.3T and a centerline circumference of 34.1m. In order to generate the plasma ring of the above size, the circular magnet coil in the magnet system...

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Problems solved by technology

[0003] Aiming at the shortcomings of low-temperature superconductors in the above technical background, such as low critical current density, small critical magnetic field strength, low ope

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