The Inertial Damping of the VIRGO superattenuator and the residual motion of the mirror

Acernese, F; Amico, P; Arnaud, N; Arnault, C; Babusci, D; Ballardin, G; Barone, F; Barsuglia, M; Bellachia, F; Beney, J L; Bilhaut, R; Bizouard, M A; Boccara, C; Boget, D; Bondu, F; Bourgoin, C; Bozzi, A; Bracci, L; Braccini, S; Bradaschia, C; Brillet, A; Brisson, V; Buskulic, D; Cachenaut, J; Calamai, G; Calloni, E; Canitrot, P; Caron, B; Casciano, C; Cattuto, C; Cavalier, F; Cavaliere, S; Cavalieri, R; Cecchi, R; Cella, G; Chiche, R; Chollet, F; Cleva, F; Cokelaer, T; Cortese, S; Coulon, J P; Cuoco, E; Cuzon, S; Dattilo, V; David, P Y; Davier, M; De Rosa, M; De Rosa, R; Dehamme, M; Di Fiore, L; Di Virgilio, A; Dominici, P; Dufournaud, D; Eder, C; Eleuteri, A; Enard, D; Errico, A; Evangelista, G; Fabbroni, L; Fang, H; Ferrante, I; Fidecaro, F; Flaminio, R; Fournier, J D; Fournier, L; Frasca, S; Frasconi, F; Gammaitoni, L; Ganau, P; Garufi, F; Gaspard, M; Gennaro, G; Giacobone, L; Giazotto, A; Giordano, G; Girard, C; Guidi, G; Heitmann, H; Hello, P; Hermel, R; Heusse, P; Holloway, L; Iannarelli, M; Innocent, J M; Jules, E; La Penna, P; Lacotte, J C; Lagrange, B; Leliboux, M; Lieunard, B; Lodygenski, O; Lomtadze, T; Loriette, V; Losurdo, G; Loupias, M; Mackowski, J M; Majorana, E; Man, C N; Mansoux, B; Marchesoni, F; Marin, P; Marion, F; Marrucho, J C; Martelli, F; Masserot, A; Massonnet, L; Mataguez, S; Mazzoni, M; Mencik, M; Michel, C; Milano, L; Montorio, J L; Morgado, N; Mours, B; Mugnier, P; Nicolosi, L; Pacheco, J; Palomba, C; Paoletti, F; Paoli, A; Pasqualetti, A; Passaquieti, R; Passuello, D; Perciballi, M; Pinard, L; Poggiani, R; Popolizio, P; Pradier, T; Punturo, M; Puppo, P; Qipiani, K; Ramonet, J; Rapagnani, P; Reboux, A; Regimbau, T; Reita, V; Remillieux, A; Ricci, F; Richard, F; Ripepe, M; Rivoirard, P; Roger, J P; Scheidecker, J P; Solimeno, S; Sottile, R; Stanga, R; Taddei, R; Taurigna, M; Teuler, J M; Tourrenc, P; Trinquet, H; Turri, E; Varvella, M; Verkindt, D; Vetrano, F; Veziant, O; Viceré, A; Vinet, J Y; Vocca, H; Yvert, M; Zhang, Z

doi:10.1088/0264-9381/19/7/354

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The VIRGO superattenuator (SA) is effective in suppressing seismic noise below the expected thermal noise level above 4 Hz. However, the residual mirror motion associated with the SA normal modes can saturate the interferometer control system. This motion is reduced by implementing a wideband (DC–5 Hz) multidimensional active control (the so-called inertial damping) which makes use of both accelerometers and position sensors and of a digital signal processing (DSP) system. Feedback forces are exerted by coil–magnet actuators on the top of an inverted pendulum pre-isolator stage. The residual root mean square motion of the mirror in 10 s is less than 0.1 μm.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/1064408

Titolo:	The Inertial Damping of the VIRGO superattenuator and the residual motion of the mirror
Autori interni:	ACERNESE, Fausto BARONE, Fabrizio
Data di pubblicazione:	2002
Rivista:	CLASSICAL AND QUANTUM GRAVITY
Abstract:	The VIRGO superattenuator (SA) is effective in suppressing seismic noise below the expected thermal noise level above 4 Hz. However, the residual mirror motion associated with the SA normal modes can saturate the interferometer control system. This motion is reduced by implementing a wideband (DC–5 Hz) multidimensional active control (the so-called inertial damping) which makes use of both accelerometers and position sensors and of a digital signal processing (DSP) system. Feedback forces are exerted by coil–magnet actuators on the top of an inverted pendulum pre-isolator stage. The residual root mean square motion of the mirror in 10 s is less than 0.1 μm.
Handle:	http://hdl.handle.net/11386/1064408
Appare nelle tipologie:	1.1.2 Articolo su rivista con ISSN

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