The design, construction and testing of floats for use in superfluid helium

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:47806

Tew, W L; Bartlett, D F ^[1]

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1. Univ. of Colorado, Boulder, CO (United States)

The authors employ a technique which uses superfluid {sup 4}He as a delicate, low noise suspension medium. The goal is to create a new type of torsion balance for earth based gravitational experiments requiring very high sensitivity. As a fluid bearing replacing the classical torsion fiber suspension, liquid helium II offers several unique advantages. Most notable are its extremely low viscosity, high thermal stability, inertness and small thermally driven fluctuations. The authors present the design and performance aspects of buoyant torsional oscillators and the cryogenic system used to maintain the superfluid medium.

• OSTI ID: 47806
• Report Number(s): CONF-930703-; TRN: 94:007381-0005
• Resource Relation: Conference: International cryogenic materials conference (ICMC), Albuquerque, NM (United States), 12-16 Jul 1993; Other Information: PBD: 1994; Related Information: Is Part Of Advances in cryogenic engineering, Volume 39, Part B; Kittel, P. [ed.]; PB: 1053 p.
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
BALANCES
HYDROSTATIC BEARINGS
HELIUM II
TORSION