| 摘要 |
A superconducting magnet system with a superconducting magnet coil system disposed in a cryogenic fluid tank ( 2 ) of a cryostat ( 1 ), and a refrigerator ( 6 ) for cooling the cryogenic fluid that cools the magnet, is characterized in that a radiation shield ( 5; 21; 31; 41; 51 ) is provided which separates a refrigerator space ( 4 ) from the cryogenic fluid tank ( 2 ), wherein the entire cooling region ( 9 ) of the refrigerator ( 6 ) is disposed in the refrigerator space ( 4 ), and wherein the radiation shield ( 5; 21; 31; 41; 51 ) has openings ( 11; 22; 44, 45; 53 ) for gas or fluid exchange between the refrigerator space ( 4 ) and the cryogenic fluid tank ( 2 ). Should the refrigerator fail, the thermal input into the cryostat is reduced, and the safety of the maintenance staff is improved in case of a quench.
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