| 摘要 |
PURPOSE:To eliminate induction current flow in a superconducting device without reducing mechanical coupling force between a reinforcing member and a spool by a method wherein a coil is jointly provided at the outside circumference of the reinforcing member provided at the outside circumference of a superconducting coil so as to make the reinforcing member receive no induction. CONSTITUTION:The coil 6 is provided at the outside circumference of the reinforcing member 5, respective one end 5a, 6a of the reinforcing member 5 and the coil 6 are connected electrically with a conductor 7a, and another end 5b, 6b are connected electrically with a conductor 7b the same. Therefore because the reinforcing member 5 and the coil 6 are provided adjoining closely, mutual inductances between the superconducting coil 3 are the same and are negated mutually, mechanical coupling between the reinforcing member 5 and the spool 1 receive no hindrance, no induction current flows in the reinforcing member 5, and stalbe operation can be performed. |
