Mechanical filter for the suspension of gravitational wave antennas

Journal Article · Sun Jan 31 23:00:00 EST 1982 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1136943· OSTI ID:5802767

Coccia, E

We discuss here the design of a new suspension for Weber-type gravitational wave antennas. The suspension consists of cantilever beams and operates as a mechanical filter for the external mechanical noise. The attenuation of the filter and the stresses applied on the antenna are computed and verified experimentally. When the filter is optimized, the attenuation depends on the value of an angular frequency, ..omega../sub c/, characteristic of the material of the beams. Attenuation of the order of 10/sup -6/--10/sup -7/ can be obtained at 1 KHz for a 1000-kg antenna using materials with good anelastic behavior such as Al 5056 and Ti 64.

• Research Organization: Istituto di Fisica, Universita di Roma, I.N.F.N. Sezione di Roma, 1-00185 Rome, Italy
• OSTI ID: 5802767
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 53:2; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
ALUMINIUM ALLOYS
ANTENNAS
ATTENUATION
COMPARATIVE EVALUATIONS
DATA
DESIGN
ELECTRICAL EQUIPMENT
EQUIPMENT
FILTERS
FREQUENCY DEPENDENCE
FREQUENCY RANGE
GRAVITATIONAL WAVE DETECTORS
INFORMATION
KHZ RANGE
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
NOISE
NUMERICAL DATA
OPTIMIZATION
RADIATION DETECTORS
STRESSES
SUPPORTS
THEORETICAL DATA
TITANIUM ALLOYS