FORCED FROZEN TYPE SUPERCONDUCTING MAGNET

摘要

PURPOSE:To largely improve the stability of a forced frozen type supercon ducting magnet without modifying the design of a conductor itself by providing a freezing tube inside the conductor of the innermost layer. CONSTITUTION:A magnet has a plurality of layers of conductors 1 formed annularly as a whole and freezing tubes 2 mounted inside the conductors of the innermost layer. The layers of the conductors 1 are supported by a support 3. The conductors 1 have different radii, and are composed of a plurality of annular tubes 10 radially superposed with each other and many superconducting strands 11 disposed in the tubes. The tubes 2 provided inside the conductors of the innermost layer are stacked in two stages. Freezing fluid such as supercricical helium is fed in the tubes. A passage 20 is formed in the tube 10 of the innermost layer conductors to freely feed the fluid between the interior of the tube of the conductors and the interior of the freezing tube.