| 摘要 |
PURPOSE:To provide a superconductor magnet, where the main body is constituted of superconductive wire in the line of a compound excellent in high magnetic field property and which is extremely little in magnetic field attenuation and can generate a high magnetic field which contributes greatly to the improvement of the performances of magnetic resonance image diagnosis apparatus and nuclear magnetic resonance spectroscopy for analysis, etc. CONSTITUTION:This magnet is equipped with a superconductive magnet body 1 made of an Nb3Sn superconductive wire and a permanent current switch 2 made of an NbTi superconductive wire connected to the superconductive magnet body 1, and the superconductive wire connections for connecting the superconductive magnet body 1 with the current switch 2 are jointed directly with each other at the Nb3Sn superconductive element wire and NbTi superconductive element wire where the nonconductive parts forming matrixes are removed and exposed, and besides Nb3Sn is produced by heat treatment. Hereupon, as the heat treatment temperature for creating Nb3Sn at the connection, it is selected and set to 500-750 deg.C. |
