Thermal conductance gasket for zero boiloff superconducting magnet

摘要

A thermal interface interposed between cryo-cooler and recondenser of the magnet assembly includes a deformable gasket (29) which has spaced grid wires (88) made of indium. The grid wires are extended across the gasket and their ends are connected to planar arcuate segments (92) which have thickness lesser than the grid wires. A helium pressure vessel contains liquid helium reservoir which is used for providing cryogenic temperatures to MRI magnet assembly for superconducting operation. A cryo-cooler and a recondenser cool and recondense the helium gas formed in the pressure vessel. Bolts are selectively tightened for pressing the cryo-cooler onto the gasket, for coupling with the recondenser.