title: A compact rotating dilution refrigerator.
abstract: 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 (4)He. 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(-1) up to angular velocities in excess of 2.5 rad s(-1). The behavior of a high-Q mechanical resonator during rapid changes in rotation has also been investigated.
authors.affiliation: School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
authors.forename: M J
authors.initials: MJ
authors.lastname: Fear
authors.forename: P M
authors.initials: PM
authors.lastname: Walmsley
authors.forename: D A
authors.initials: DA
authors.lastname: Chorlton
authors.forename: D E
authors.initials: DE
authors.lastname: Zmeev
authors.forename: S J
authors.initials: SJ
authors.lastname: Gillott
authors.forename: M C
authors.initials: MC
authors.lastname: Sellers
authors.forename: P P
authors.initials: PP
authors.lastname: Richardson
authors.forename: H
authors.initials: H
authors.lastname: Agrawal
authors.forename: G
authors.initials: G
authors.lastname: Batey
authors.forename: A I
authors.initials: AI
authors.lastname: Golov