| 摘要 |
PROBLEM TO BE SOLVED: To hold the temperature of a superconducting coil at an operable temperature or below, even though only a certain period of time, when a cryogenic refrigerator stops due to some problem, in a superconducting coil cooling system.SOLUTION: The superconducting coil cooling system performs conduction cooling of a superconducting coil 1 housed in a vacuum vessel 7 by means of a cryogenic refrigerator 2. The cryogenic refrigerator 2 holds the temperature of the superconducting coil 1 at an operable temperature or below, by cooling the superconducting coil 1 from a heat transfer member 5 for radiation shield layer via a radiation shield layer 4 and a resin layer 3. When the cryogenic refrigerator 2 stops due to some problem, high heat does not intrude into the superconducting coil 1 from the cryogenic refrigerator 2, because a heat transfer path for directly connecting the superconducting coil 1 and the cryogenic refrigerator 2 thermally is not provided. Consequently, the temperature of the superconducting coil 1 can be held at an operable temperature or below, even though only a certain period of time. |
