| 摘要 |
PROBLEM TO BE SOLVED: To provide a cryostat for a superconducting magnet remarkably reducing the possibility of the discharge of a current lead for the superconducting magnet by a structure in which the current lead is not exposed to saturated steam. SOLUTION: An upward projection is formed at a part of the upper section of a saturated superfluid helium tank 5, and the current lead 15 for the superconducting magnet 14 is introduced into the helium tank 5 from the upper section being a projection. A valve controller 20 controls an exhaust pipe valve 12 and a flow control valve 13 so that the surface of the liquid of saturated superfluid helium is positioned at the specified place of the projection. Accordingly, the possibility of the discharge can be reduced remarkably without exposing the current lead 15 to saturated steam. COPYRIGHT: (C)2007,JPO&INPIT |
