Support system for an elongated cryogenic envelope

摘要

An elongated cryogenic envelope includes a support-spacer for locating a plurality of refrigeration tubes at selected radial and circumferential locations within a vacuum chamber formed between inner and outer coaxial tubes. The support-spacer includes a high-thermal-conductivity ring surrounding the inner tube and a plurality of hollow epoxy-fiberglass, titanium-tipped spokes extending between the outer tube and the high-thermal-conductivity ring surrounding the inner tube.