Plastic dilution refrigerators


A new design for conventional,3He re-circulating, dilution refrigerators has been developed and tested. The units are made out of plastic and can be designed to have very small diameters (<15mm). These characteristics make them ideal to cool samples below 100 mK in high or time-varying magnetic fields. Furthermore, they are inexpensive, reliable and easily constructed. The best refrigerators reach continuous temperatures of around 10 mK at low circulation rates (≈ 100 μmol/s). The cooling power at high temperatures is limited by the speed of the circulation pump and not by the refrigerator itself. The basic design and construction methods are discussed.

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ter Haar, E., Wagner, R., van Woerkens, C.M.C.M. et al. Plastic dilution refrigerators. J Low Temp Phys 99, 151–166 (1995).

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  • Magnetic Field
  • Magnetic Material
  • Small Diameter
  • Basic Design
  • Construction Method