| 摘要 |
PURPOSE:To reduce an axial compressive force which results in a degraded critical current density. CONSTITUTION:A superconducting coil is comprised of: outer windings 2 which are made of a superconductor being wrapped like a coil; inner windings 1 which are shorter, in axial length, than the outer winding and which are disposed adjacent to the inner end of the outer windings; and rings 3 of a magnetic substance, each surrounding the inner winding 1. |
