Closed Cycle refrigerators, CCRs

08EC2157 Sumitomo 415 top loading CCR SXD Diffractometer

08EC2157 Sumitomo 415 top loading CCR SXD Diffractometer
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Closed cycle refrigerators, CCRs, are electrically driven mechanical devices which, by the controlled cyclic compression and expansion of high pressure helium gas follow the Gifford-McMahon thermo-dynamic cycle or thermo acoustic cooling by pulse tube refrigeration technology. Both of these technologies can produce temperatures down to 4K. The system base temperature is dependent on the CCR type or model.

Please select a group of CCRs for more detailed information:

Top Loading CCRs

Pool CCRs

High Pressure Dedicated CCRs

Beamline Dedicated CCRs


Many CCR units mount directly into an instrument’s own vacuum thus reducing the number of shields which contribute to parasitic backgrounds.

If you have any questions about any of our CCRs or you think you may want to use one on your experiment please contact the sample environment team, or the respective instrument scientist. There is also additional information on most of our CCRs and the integrated Cold heads if you follow the respective links.

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