Normal Mode Suppression in All Metal Cantilever Vibration Isolators

W. Ke, David Blair, M. Notcutt, L. Ju

Research output: Contribution to journalArticle

Abstract

An all metal multi-stage low frequency vibration isolator for a laser interferometer gravitational wave detector has been built and tested. Curved cantilever springs are used to form a low frequency compact form of isolation element. The system has many modes with moderately high Q factors which require damping. We describe here the successful damping of normal modes in all relevant degrees of freedom in an isolator with cutoff frequency less than 10 Hz. Measurements show no added noise above the control bandwidth.
Original languageEnglish
Pages (from-to)275-281
JournalPhysics Letters A
Volume197
DOIs
Publication statusPublished - 1994

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vibration isolators
Q factors
damping
retarding
low frequencies
isolators
metals
gravitational waves
isolation
cut-off
interferometers
degrees of freedom
bandwidth
detectors
lasers

Cite this

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title = "Normal Mode Suppression in All Metal Cantilever Vibration Isolators",
abstract = "An all metal multi-stage low frequency vibration isolator for a laser interferometer gravitational wave detector has been built and tested. Curved cantilever springs are used to form a low frequency compact form of isolation element. The system has many modes with moderately high Q factors which require damping. We describe here the successful damping of normal modes in all relevant degrees of freedom in an isolator with cutoff frequency less than 10 Hz. Measurements show no added noise above the control bandwidth.",
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Normal Mode Suppression in All Metal Cantilever Vibration Isolators. / Ke, W.; Blair, David; Notcutt, M.; Ju, L.

In: Physics Letters A, Vol. 197, 1994, p. 275-281.

Research output: Contribution to journalArticle

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AU - Ke, W.

AU - Blair, David

AU - Notcutt, M.

AU - Ju, L.

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N2 - An all metal multi-stage low frequency vibration isolator for a laser interferometer gravitational wave detector has been built and tested. Curved cantilever springs are used to form a low frequency compact form of isolation element. The system has many modes with moderately high Q factors which require damping. We describe here the successful damping of normal modes in all relevant degrees of freedom in an isolator with cutoff frequency less than 10 Hz. Measurements show no added noise above the control bandwidth.

AB - An all metal multi-stage low frequency vibration isolator for a laser interferometer gravitational wave detector has been built and tested. Curved cantilever springs are used to form a low frequency compact form of isolation element. The system has many modes with moderately high Q factors which require damping. We describe here the successful damping of normal modes in all relevant degrees of freedom in an isolator with cutoff frequency less than 10 Hz. Measurements show no added noise above the control bandwidth.

U2 - 10.1016/0375-9601(94)00946-M

DO - 10.1016/0375-9601(94)00946-M

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JF - Physics Letters A

SN - 0375-9601

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