Coupling a cryogenic cooler to a body to be cooled.

摘要

Demountable cryocooler cold heads must make reliable contacts having low thermal resistance at cryogenic temperatures for cooling devices such as radiation shields used in superconducting magnets. Cryostat vacuum and a bellows (25) is utilized in order to engage the cold head second stage (73) interface, while the first stage (75) interface is independently engaged by means of a bolted flange (47) and a bellows (53). A soft metal (81) such as indium is employed at the contact surface of the heat station.