| 摘要 |
<P>PROBLEM TO BE SOLVED: To stably cool and retain a cooled object at a very low temperature by utilizing liquid hydrogen in safety. Ž<P>SOLUTION: This cryogenic cooling device includes a cryogenic refrigerator 11, a heat transfer plate 13 for thermally connecting the cryogenic refrigerator with a superconductive coil 1 as the cooled object, and a hydrogen container 12 of a sealed structure to which a pressurized hydrogen gas is injected, so that the hydrogen gas is cooled and condensed by the cryogenic refrigerator, and stored as the liquid hydrogen 20, the superconductive coil 1 is cooled by the cryogenic refrigerator 11 through the heat transfer plate 13, and the superconductive coil 1 is cooled by the liquid hydrogen 20 in the hydrogen container 12. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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