MECHANICAL FILTERS FOR THE GRAVITATIONAL-WAVES DETECTOR VIRGO - PERFORMANCE OF A 2-STAGE SUSPENSION

Authors
BRACCINI S BRADASCHIA C DELFABBRO R DIVIRGILIO A FERRANTE I FIDECARO F FLAMINIO R GENNAI A GIAZOTTO A LAPENNA P LOSURDO G PALLA F PASQUALETTI A PASSUELLO D POGGIANI R ZHANG Z
Citation
S. Braccini et al., MECHANICAL FILTERS FOR THE GRAVITATIONAL-WAVES DETECTOR VIRGO - PERFORMANCE OF A 2-STAGE SUSPENSION, Review of scientific instruments, 68(10), 1997, pp. 3904-3906
Citations number
7
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
68
Issue
10
Year of publication
1997
Pages
3904 - 3906
Database
ISI
SICI code
0034-6748(1997)68:10<3904:MFFTGD>2.0.ZU;2-5
Abstract
Mechanical filters using cantilever springs as elastic elements have b een developed for the seismic isolation system of the VIRGO gravitatio nal wave detector. A two-stage suspension has been built in order to s tudy how the attenuation performances of individual filters combine wh en the filters are cascaded. An attenuation greater than or equal to 8 0 dB in the vertical direction and greater than or equal to 110 dB in the horizontal direction has been attained for frequencies above 10 Hz . (C) 1997 American Institute of Physics.