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Design Trade-Offs In Miniature Cryogenic Refrigerators

Many advanced electro-optical systems require cryogenic temperatures for optimum performance of their sensors. This cooling requirement makes the cryogenic refrigerator a critical component of the sophisticated system. Too frequently an expensive system is completely designed without adequate provision for the power, space and performance requirements of the refrigerator. There are more than 20 trade-offs an experienced cryogenic cooler design team can make for the system designers if the interface is discussed at an early stage. The important cooler design and interface parameters together with the associated weighting factors will be presented on a pragmatic basis.