Superconducting magnet and method of producing same

摘要

A superconducting magnet (10) includes a superconducting wire (1)including magnesium diboride; a superconducting coil (2) where a part (2b) of the superconducting wire is wound; and a joint (3) where an end (1a, 1b) of the superconducting wire and an end of another superconducting wire (1c) are connected and united. The joint includes a sintered body (3c) including magnesium diboride, an averaged particle diameter (D2) of magnesium diboride at the joint of the superconducting wire is greater than an averaged particle diameter (D1) of the magnesium diboride at the part where the superconducting wire is wound.