| 摘要 |
PURPOSE:To facilitate the coincidence of an inner barrel center with a magnetic field center by a method wherein the title superconductive magnet is supported in no-contact to be driven for making the inner barrel center of a room temperature bore coincide with the magnetic field center of said magnet. CONSTITUTION:This superconductive device is provided with a cryostat with a room temperature bore 11 having an inner barrel center as well as a superconductive magnet 15 self-contained in the cryostat on the outer periphery of said bore 11 having the magnetic field center in the room temperature bore 11. On the other hand, this superconductive magnet 15 is to be held supporting the superconductive magnet 15 in no-contact with a magnet bearings 30 to be driven by a driving control device so that the inner barrel center of the room temperature bore 11 may coincide with the magnetic field center of the superconductive magnet 15. At this time, the superconductive magnet 15 is fixed to a shaft 17. Through these procedures, the coincidence of the magnetic field center of the superconductive magnet 15 with the inner barrel center of the room temperature bore 11 can be facilitated regardless of the manufacturing tolerance of a weld part, the inaccurate estimation of thermal contraction. |
