Abstract
A simple method of temperature stabilization on cold stage of 4 K Gifford-McMahon (GM) cryocooler has been proposed. A copper pot connected to compressor unit by a stainless steel capillary tube is mounted on the 4 K stage of a GM cryocooler. Depended on the temperature of pot, pressurized helium can naturally go into or out of the pot. The utilization of high volumetric specific heat of pressurized helium in the pot at 4 K region produces a good temperature stability on the 4 K stage. The periodic temperature fluctuation of the 4 K stage is ∼ 0.5 K (peak-to- peak) typically, but the high pressure pot described in the present paper reduces the temperature fluctuation effectively down to ∼ 0.05 K (peak-to-peak). The method is safe to deal with, and the system is easy to operate. This paper shows the experimental details, and discusses the temperature stabilization effect of the pot and other advantages of the method.
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© 1997 Springer Science+Business Media New York
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Li, R., Onishi, A., Satoh, T., Kanazawa, Y. (1997). Temperature Stabilization on Cold Stage of 4 K G-M Cryocooler. In: Ross, R.G. (eds) Cryocoolers 9. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5869-9_87
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DOI: https://doi.org/10.1007/978-1-4615-5869-9_87
Publisher Name: Springer, Boston, MA
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