Cryogenic Test Dewar

This dewar is 19" in diameter and 26" long. To support the inner tank, it incorporates a glass-epoxy cylinder with numerous large holes to provide a very long thermal loss path. Low-temperature epoxy bonds this cylinder between the inner tank and outer tank lid. Explosion bonding was used to accomplish the transition from the aluminum main structure to the stainless steel fittings, and several large Viton o-rings provide seals at various points.

ADC designs and builds custom cryogenic cooling systems. These are used extensively by astronomers, chemists, physicists and engineers as platforms for a wide variety of research instruments. Industrial customers use them for production testing of electronic devices and sensors.

The systems are designed to cool detectors, optics, experimental materials and complete instruments to cryogenic temperatures and to sustain them at these temperatures for extended periods. They are passive cooling devices that contain vacuum-insulated reservoirs of LN2, LHe, or LN2 plus LHe.