| 摘要 |
<p>A superconductive magnet coolable with a two stage cryocooler is provided. The superconductive magnet includes a cryostat containing a magnet winding (21), a thermal radiation shield (25) surrounding the magnet winding and spaced away therefrom. The cryostat (15) defines an aperture (13) in which a cryocooler cold head interface receptacle (31) is situated. The interface receptacle has first and second heat stations (33,31a) for connecting in a heat flow relationship with first and second heat stations (27,29) of the cryocooler (11), respectively. A precooler has first and second stage heat exchangers (53,55) connected in a heat flow relationship with the first and second heat stations of said interface, respectively. The interface has inlet and outlet ports (63,65) for supplying and removing cryogens. Piping (57,59,61) fabricated from heat insulating material connects the first and second heat exchangers in a series flow relationship between the inlet and outlet ports.</p> |
