Patent ID: 6043729
Filing Date: 2000-03-28
Classification: G01R,H01F

Abstract:
A superconductive magnet, comprising:a superconductive coil assembly having a cryogenic vessel;a thermal shield enclosing said cryogenic vessel;a vacuum enclosure enclosing said thermal shield, said cryogenic vessel, thermal shield and vacuum enclosure having annular shells radially spaced apart from one another with reference to a common longitudinal axis and coaxially aligned with said common longitudinal axis; anda tube suspension assembly including a plurality of tubes located between respective ones of said cryogenic vessel, thermal shield and vacuum enclosure and being axially overlapped and interconnected with one another and with said cryogenic vessel, thermal shield and vacuum enclosure such that said plurality of tubes of said tube suspension assembly provides support of said cryogenic vessel and thermal shield on said vacuum enclosure, one of said tubes of said tube suspension assembly having an end forming a sliding joint with said cryogenic vessel that allows both radial and axial movement of said cryogenic vessel relative to said thermal shield and vacuum enclosure during cooldown of said cryogenic vessel from ambient to cryogenic temperatures as said tube suspension assembly supports said cryogenic vessel and thermal shield on said vacuum enclosure.