| 摘要 |
PURPOSE:To prevent the breakdown of a coil which is a superconductive magnet even if a cooling device fails, by controlling an AC/DC converter with the abnormality detecting device of a superconductive magnet cooling device, and outputting energy that is stored in the superconductive magnet. CONSTITUTION:An abnormality detecting means 10 for a cooling device 9 is provided. When the cooling device 9 becomes abnormal, an AC/DC power converter 4 which controls the input and the output of energy of a superconductive magnet 7 is controlled with the detecting means 10. The energy stored in the superconductive magnet 7 is outputted to loads 12-2N. In this way, the stored energy is supplied to the loads of power when the cooling device 9 itself (cooling mechanism) fails and the superconductive magnet 7 cannot be cooled continuously. Thus, the breakdown of the superconductive magnet 7 and a permanent current switch 6 can be prevented. |
