Superconductive magnet including a cryocooler coldhead

A magnet assembly to reduce the effects of cryocooler vibration comprising:

• (1) a longitudinally-extending first axis;
• (2) at least one superconductive main coil positioned around said first axis and carrying a main electric current in a first direction;
• and
• (3) a vacuum enclosure enclosing said at least one superconcutive main coil;
• b) a cryocooler coldhead having a central axis and a rigid housing, wherein said central axis is generally vertically aligned;
• and
• c) a bellows having a bellows axis and first and second ends, wherein said bellows axis is generally-vertically-aligned and said bellows is flexible along said bellows axis, wherein said first end of said first bellows is hermetically attached to said housing of said cryocooler coldhead, and wherein said second end of said bellows is hermetically attached to said vacuum enclosure of said first assembly;
• d) further including a rigid and generally-vertically-aligned first coldhead support having a first vertical end attached to said first housing of said first cryocooler coldhead and having a second vertical end either attached to a support ceiling or supported by a floor, wherein said housing of said first cryocooler coldhead dervices no weight-bearing support from said vacuum enclosure.