| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a maintenance method in which cryocooler attaching/detaching work can be safely and easily performed even with a superconducting magnet in open structure. <P>SOLUTION: The cryocooler 106 is moved along a preliminarily set line at a prescribed position to a cryocooler installation position on the superconducting magnet 103, and the cryocooler 106 is removed from or installed on the superconducting magnet 103. For example, a track 401 installed on the superconducting magnet 103 or a peripheral part, and a movable member 407 mounting the cryocooler 106 to move along the track 401 are used. Positioning of the cryocooler 106 before and after replacement can thus be easily performed, and attraction of the cryocooler 106 by the field of the superconducting magnet 103 can be resisted. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
