A compact rotating dilution refrigerator

Fear, M.J. and Walmsley, P.M. and Chorlton, D.A. and Zmeev, Dmitriy and Gillott, S.J. and Sellers, M.C. and Richardson, P.P. and Agrawal, H. and Batey, G. and Golov, A.I. (2013) A compact rotating dilution refrigerator. Review of Scientific Instruments, 84. ISSN 0034-6748

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We describe the design and performance of a new rotating dilution refrigerator that will primarily be used for investigating the dynamics of quantized vortices in superfluid 4He. All equipment required to operate the refrigerator and perform experimental measurements is mounted on two synchronously driven, but mechanically decoupled, rotating carousels. The design allows for relative simplicity of operation and maintenance and occupies a minimal amount of space in the laboratory. Only two connections between the laboratory and rotating frames are required for the transmission of electrical power and helium gas recovery. Measurements on the stability of rotation show that rotation is smooth to around 10−3 rad/s up to angular velocities in excess of 2.5 rad/s. The behavior of a high-Q mechanical resonator during rapid changes in rotation has also been investigated.

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Journal Article
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Review of Scientific Instruments
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11 Feb 2014 16:44
Last Modified:
22 Nov 2022 00:41