| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time required for precooling of an object to be cooled. SOLUTION: A cooling system and a superconduction magnet device comprises a main refrigerator 11 having a cold accumulator, an auxiliary refrigerator 12 connected in parallel to the main refrigerator 11 and having the cold accumulator; and switching control means 14 and 23 to control operation to switch refrigerant gas, used in the main refrigerator 11, to the feed of it to the auxiliary refrigerator 12 or the stop thereof based on a given condition. |
