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Abstract

A 3-stage pulse tube cooler has been designed to operate at 10K. The staged cooler uses the same compressor and parallel staging configuration for the 1st and 2nd stages as previously employed for our delivered High Capacity Cryocooler (HCC). The 2nd and 3rd stages are in a serial configuration. The addition of the third stage extends the performance of this cooler to lower operating temperatures below 10K.