Measurement of the VIRGO superattenuator performance for seismic noise suppression
- 24 August 2001
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 72 (9) , 3643-3652
- https://doi.org/10.1063/1.1392338
Abstract
Below a few tens of hertz interferometric detection of gravitational waves is masked by seismic vibrations of the optical components. In order to isolate the mirrors of the VIRGO interferometer, a sophisticated suspension system, called superattenuator, has been developed. Its working principle is based on a multistage pendulum acting on seismic vibrations as a chain of second order mechanical low-pass filters. A complete superattenuator has been built and tested. This apparatus allows extending the VIRGO detection band down to a few Hz. A detailed description of the attenuation system and its performance are presented in this article.Keywords
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