In the field of Research many complex instruments related to physics and nuclear physics need to be cryogenically cooled by a closed loop flow of either cold gaseous helium or (sub-cooled) LN2.

Research applications examples

  • Nuclear Physics: cooling of neutron fluxes. Goal is to achieve slower neutrons, enabling enlarged interaction with materials and hence better output of the instruments.
    A flow of helium gas provided by one of our CryoFans provides the thermal connection between the application (re-liquefaction of hydrogen) and the cold source (e.g. SPC-4T Stirling Cryogenerator).
  • Cooling of laser amplifiers: the crystals used in these devices become efficient at temperatures around 80K. To avoid optical pollution, a flow of helium gas is circulated through the crystals. Circulation is done by our CryoFans and cooling is done by our Stirling Cryogenerators.
  • Cooling of HTS DC cables. These have no AC losses hence the heat loss is only by thermal shielding. The HTS materials required cooling below the freezing point of LN2, therefore requiring gaseous helium in a closed loop to provide the cooling. This He flow is provided by the integration of one of our CryoFans.
  • Cooling of HTS AC cables. These typically need to be below 77K and require a flow of sub-cooled LN2 to remove not only heat losses by thermal shielding but mainly by AC losses. Our CryoPump is specifically designed to provide such flow at low pump losses.
  • Shielding of low temperature devices: in physics, many devices are cooled at LHe temperatures. To protect these from incoming heat, they are shielded to adsorb this heat before it reaches the actual cold instrument such as LTS magnets. These shield are cooled with helium gas around 20K and 80K using our CryoFans.

For our Research solutions see:


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