학술논문
Inertial control of the mirror suspensions of the VIRGO interferometer for gravitational wave detection
Document Type
Working Paper
Author
Losurdo, G.; Calamai, G.; Cuoco, E.; Fabbroni, L.; Guidi, G.; Mazzoni, M.; Stanga, R.; Vetrano, F.; Holloway, L.; Passuello, D.; Ballardin, G.; Braccini, S.; Bradaschia, C.; Cavalieri, R.; Cecchi, R.; Cella, G.; Dattilo, V.; Di Virgilio, A.; Fidecaro, F.; Frasconi, F.; Gennai, A.; Giazotto, A.; Ferrante, I.; La Penna, P.; Lelli, F.; Lomtadze, T.; Marin, A.; Mancini, S.; Paoletti, F.; Pasqualetti, A.; Passaquieti, R.; Poggiani, R.; Taddei, R.; Vicere', A.; Zhang, Z.
Source
Rev.Sci.Instrum. 72 (2001) 3653-3661
Subject
Language
Abstract
In order to achieve full detection sensitivity at low frequencies, the mirrors of interferometric gravitational wave detectors must be isolated from seismic noise. The VIRGO vibration isolator, called 'superattenuator', is fully effective at frequencies above 4 Hz. Nevertheless, the residual motion of the mirror at the mechanical resonant frequencies of the system are too large for the interferometer locking system and must be damped. A multidimensional feedback system, using inertial sensors and digital processing, has been designed for this purpose. An experimental procedure for determining the feedback control of the system has been defined. In this paper a full description of the system is given and experimental results are presented.
Comment: 17 pages, 11 figures, accepted for publication on Review of Scientific Instruments
Comment: 17 pages, 11 figures, accepted for publication on Review of Scientific Instruments