| 摘要 |
PURPOSE:To provide a superconductive device having no possibility of burning out a plurality of power leads with less heat invasion amount by containing the power leads in a cooling tube. CONSTITUTION:Power leads 4, 5 dipped partly in liquid helium for exciting or extinguishing a superconductive coil 3 are contained in one cooling tube 12. Accordingly, the evaporated gas of liquid helium 2 is flowed from a gas inlet 13 of the tube 12 and a gas flow hole 15c of an insulating member 15 into the tube 12 so that the flow is not divided in the tube 12. Accordingly, the leads 4, 5 can be uniformly cooled. This evaporated gas is recovered from a recovery port 14 while cooling the leads 4, 5. |
