Interfacing your CRC sorption cooler to the 4K plate of a Pulse Tube (PT) or Gifford-McMahon (GM) cryocooler

Our sorption coolers only work if they are pre-cooled to 4K by interfacing to a mechanical cryocooler or liquid helium-cooled plate within a host cryostat. The interfacing can be designed to suit your particular application, with the CRC cooler positioned either on- or off-axis from the PT/GM head. Our standard 1K coolers will run with mechanical cryocoolers having cooling power as low as 100mW at 4K. If your application requires vibration isolation the CRC sorption cooler will need a separate mechanical support structure and a flexible thermal linkage to the cryocooler’s 4K stage.

Mounting radially on the precooler head

Useful for large experimental tables in a large host cryostat.
The circular interfacing plate can be customized to suit the particular needs of your application.

Mounting axially on the precooler head

Useful for small experimental tables in a small host cryostat.
The interfacing mount doubles as a radiation shield for the sorption cooler pumps, improving performance.

Mounting directly on the precooler head

Fewer thermal boundaries make this a desirable option where vibration isolation is not important.
The mainplate of the sorption cooler can be custom-designed for your application.

Interfacing your CRC sorption cooler to the 4K plate of a wet dewar cooled with liquid cryogens

Custom-shape mainplate and full radiation shield stand

The shape of the mainplate can be optimised to provide the maximum space for the end-user’s experiment.
The hole pattern in the mainplate can be designed to provide flexible use in different cryostats.

Separate radiation shield and supports

Radiation shielding of the pumps is provided by a shield that simply bolts to the sorption cooler main plate. Additional stainless steel struts support the cooler.
The cooler can be moved and placed in different positions to make best use of the available space in the cryostat.

Folded designs to sit directly on the 4K plate

For use in cryostats with limited working height, our sorption cooler designs can be ‘folded’ to reduce the overall height.
Tell us the space you have available and we can optimise our design to fit within it.

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