Compact vibration isolation and suspension for Australian International Gravitational Observatory: performance in a 72 m Fabry Perot cavity

The Review of Scientific Instruments
Pablo BarrigaDavid G Blair

Abstract

This paper describes the first demonstration of vibration isolation and suspension systems, which have been developed with view to application in the proposed Australian International Gravitational Observatory. In order to achieve optimal performance at low frequencies new components and techniques have been combined to create a compact advanced vibration isolator structure. The design includes two stages of horizontal preisolation and one stage of vertical preisolation with resonant frequencies approximately 100 mHz. The nested structure facilitates a compact design and enables horizontal preisolation stages to be configured to create a superspring configuration, where active feedback can enable performance close to the limit set by seismic tilt coupling. The preisolation stages are combined with multistage three-dimensional (3D) pendulums. Two isolators suspending mirror test masses have been developed to form a 72 m optical cavity with finesse approximately 700 in order to test their performance. The suitability of the isolators for use in suspended optical cavities is demonstrated through their ease of locking, long term stability, and low residual motion. An accompanying paper presents the local control system and shows ho...Continue Reading

References

Apr 17, 1992·Science·A AbramoviciM E Zucker
Apr 15, 1984·Applied Optics·D Z AndersonC S Masser
Dec 2, 2009·The Review of Scientific Instruments·Jean-Charles DumasDavid G Blair

❮ Previous
Next ❯

Citations

Jun 8, 2013·The Review of Scientific Instruments·Hui ShenLisheng Chen
Sep 4, 2012·The Review of Scientific Instruments·M A HosainD G Blair
Dec 2, 2009·The Review of Scientific Instruments·Jean-Charles DumasDavid G Blair
Jan 1, 2016·Living Reviews in Relativity·Charlotte BondKenneth A Strain

❮ Previous
Next ❯

Methods Mentioned

BETA
Astronomy

Software Mentioned

SAS
TAMA
VIRGO

Related Concepts

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.