| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability on the superconductive magnet of a linear motor train by varying the natural frequency of at least one inner vessel out of a plurality of inner vessels from those of other inner vessels, within one outer vessel. SOLUTION: For a superconductive magnet, 8-a, 8-b, 8-c, and 8-d different in rigidity are used as the load supports 8 to support and fix four pieces of inner vessels 2-a, 2-b, 2-c, and 2-d housing superconductive coils. Then, the natural frequencies of the inner vessels 2 come to severally different values, because the spring constants of the load supports 8 are all put to different values by putting the diameters of the cylinder parts 8C-a, 8C-b, 8C-d of the load supports 8 to severally support and fix the four pieces of inner vessels 2a-2d in severally different sizes. Further, the dispersion of the natural frequency is determined to be roughly 5%. As a result, it becomes to prevent the four pieces of inner vessels from resonating at the same time, and the reliability on the supperconductive magnet for a linear motor train can be improved by reducing heat generation. |
