SUPERCONDUCTING COIL, SUPERCONDUCTING MAGNET, AND METHOD FOR MANUFACTURING SUPERCONDUCTING COIL

摘要

An inner circumferential portion is formed by winding one of first and second superconducting wires each having a band shape. An outer circumferential portion is formed by winding the other of the first and second superconducting wires around the inner circumferential portion. A welding portion joins the first and second superconducting wires to each other by welding between the inner circumferential portion and the outer circumferential portion. The first superconducting wire is higher in strength than the second superconducting wire. The second superconducting wire is smaller in thickness than the first superconducting wire.