Compact, Reliable Compressor For Closed-Cycle JT Cryocoolers

Period of Performance: 05/30/1998 - 11/29/1998


Phase 1 SBIR

Recipient Firm

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


Cryogenically cooled, infrared sensors are a vital component in military targeting and guidance systems. Existing coolers cannot meet the needs of future systems, particularly in applications where high reliability, continuous cooling, and rapid cooldown are essential. We propose an innovative compressor that will enable closed cycle Joule-Thomson (JT) cryocoolers to operate reliably and efficiently while providing fast cooling for IR sensors. In Phase I we will prove the feasibility of the compressor by building and testing a prototypical drive system, demonstrating the compression performance, and identifying by test the optimal refrigerant for the JT cycle. In Phase II we will build a complete prototype compressor and demonstrate its operation as part of a cryogenic cooling system.