| 摘要 |
PURPOSE:To prevent the shrinkage of a winding frame and to prevent the loosening of a winding wire by dispersing a continuous or semicontinuous fibered-non-susperconductive compound in the circumferential direction of the bobbin in a non- magnetic metallic matrix. CONSTITUTION:A non-superconductive compound 5 such as a CuTi system, a CuAl system, and the like is mixed in a non-magnetic-metallic matrix 4 comprising Cu, stainless steel, or the like, so that its mixing ratio is about 0.5-5. A fiber- state non-superconductive compound 5 is concentrically distributed in the circumferential cross-sectional area of a bobbin 2. The ratio of the non-magnetic metallic matrix 4 and the non-superconductive compound 5 corresponding to the direction is so determined that the amount of the non-superconductive compound 5 in the circumferential direction is made to be large, thereby the shrinkage in the circumferential directionof the bobbin 2 is made small. In the case, superconductive magnet is of an alloy system, the non-superconductive compound 5 is preliminarily formed and wound in a winding frame. In the case it is of a compound system, heat treating is pefformed after the winding work. In this constitution, the winding is not loosened under the super-low-temperature conditions and the superconductive characteristics can be improved. |
