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. (C) 2001 American Institute of Physics.
|Autori:||Ballardin G; Bracci L; Braccini S; Bradaschia C; Casciano C; Calamai G; Cavalieri R; Cecchi R; Cella G; Cuoco E; D'Ambrosio E; Dattilo V; Di Virgilio A; Fabbroni L; Fidecaro F; Frasconi F; Gaddi A; Gennai A; Gennaro G; Giazotto A; Losurdo G; Holloway L; La Penna P; Lelli F; Majorana E; Mazzoni M; Paoletti F; Pasotti M; Pasqualetti A; Passaquieti R; Passuello D; Poggiani R; Puppo P; Raffaelli F; Rapagnani P; Ricci F; Ruggi P; Stanga R; Taddei R; Vetrano F; Vicere A; Zhang Z|
|Titolo:||Measurement of the VIRGO superattenuator performance for seismic noise suppression|
|Anno del prodotto:||2001|
|Digital Object Identifier (DOI):||10.1063/1.1392338|
|Appare nelle tipologie:||1.1 Articolo in rivista|