Multi-stage, Non-contaminating Compressor for Closed-cycle J-t Cryocooler

Period of Performance: 06/27/1994 - 12/28/1994


Phase 1 SBIR

Recipient Firm

Creare, Inc.
16 Great Hollow Road Array
Hanover, NH 03755
Principal Investigator


J-T cryoccolers potentially offer the best solution for sensor cooling applications. Because of the high cooling capacity per unit mass flow, the heat exchangers and J-T cryocoolers can be significantly better than that of other mechanical coolers. Despite these benefits, closed-cycle J-T cryocoolers are not often used for sensor cooling applications due to the lack of a suitable compressor. We propose the development of a J-T cryocooler based upon a small ultra-clean compressor system which handles multiple gases and multiple compression stages in a single compact, sealed unit. An innovative drive system gives the system high power density and low vibration.