Skip to main content

About us

View

Quick Access

magnetic bearing machine

Helium refrigeration around 2K

Tailor-made refrigerators for large-scale superconductor projects

Our 2K refrigerators can be used to cool any conventional superconductor application in conditions where their performance is maximised, around 2K.

Our refrigeration systems are intended for research centres using superconductors and operating them at a temperature where the helium is superfluid (around 2 K) for their particle accelerator experiments, and they are specially designed to meet the requirements of customer applications. They include the helium refrigerator capable of delivering helium in the form required at 4.5 K, a supercritical liquid for supply to the user application such as magnets, and reducing the temperature of the helium to 2 K or 1.8 K by pumping the helium so that it reaches the necessary pressure of 30 mbars abs. or 15 mbars abs. as appropriate. 
Our refrigerators are also capable of supplying the necessary concomitant refrigeration at intermediate temperatures (80 K screening etc.). They can also include the fluid storage and distribution systems and the purification systems if necessary.

Key benefits

  • High performance: optimally efficient tailor-made systems that can reduce operating costs
  • Reduced maintenance: through the choice of highly reliable components that require less maintenance
  • Smaller operating teams: automation means that units can work on standard daytime timetables and not in shifts (3-shift system, etc.)

Main technical characteristics

  • Lubricated screw compressor
  • Lubricated screw compressor in sub-atmospheric operation
  • Air Liquide cold centrifugal compressors
  • Cold box with built-in Air Liquide static gas bearing turbines and cold centrifugal compressors
  • Nitrogen pre-cooling included if required
  • Automatic management of system cool-down, design operating state of refrigerator and turnaround
  • Optional storage and distribution facilities

Standards

  • ASME Stamp U (USA) - HPGSL (Japan) - AQSIQ (China)
  • CE Marking / ASME with no stamp

References

  • CERN LHC Helium Refrigeration Systems
  • TJNAF Helium Refrigeration Systems