Development of a 1. 5-tonne niobium gravitational radiational antenna

Journal Article · Thu Oct 01 00:00:00 EDT 1987 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1139488· OSTI ID:6268709

Veitch, P J; Blair, D G; Linthorne, N P; Mann, L D; Ramm, D K

A 1.5-tonne Nb gravitational radiation antenna is described. Problems associated with a noncontacting magnetically levitated parametric upconverter transducer are discussed, and a system using a bonded microwave reentrant cavity and bonded mechanical impedance transformer is described and analyzed in detail. It is shown that such an antenna can be expected to achieve a noise temperature of --1 mK. An ultralow phase noise tunable microwave source for the transducer pump signal is described, as well as precision bonding techniques which yield a mechanical positioning accuracy of 10/sup -6/ m, and a reproducibility of 10/sup -8/ m.

• Research Organization: Department of Physics, University of Western Australia, Nedlands 6009, Western Australia
• OSTI ID: 6268709
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 58:10
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GRAVITATIONAL RADIATION
DETECTION
GRAVITATIONAL WAVE DETECTORS
DESIGN
OPERATION
ANTENNAS
GRAVITATIONAL WAVES
LEVITATION
MECHANICAL IMPEDANCE
MICROWAVE EQUIPMENT
SENSITIVITY
TRANSDUCERS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
IMPEDANCE
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIATIONS
640106* - Astrophysics & Cosmology- Cosmology