Physics – Optics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001asthe..94..479t&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 94, No. 10, p. 479 - 486 (2001)
Physics
Optics
Gravitational Wave Detectors
Scientific paper
Currently there are various R&D programs available for the next generation of the interferometric gravitational wave detectors. To achieve the goal of a superior sensitivity desired for refined astronomical observations by these detectors, much sophisticated technologies and detail are required for the advanced laser interferometer components. One of the major obstacles for such a ground-based interferometer is the seismic disturbance. In order to obtain a wide observation band around low frequencies, the seismic noise at the level of optics needs to be attenuated. The SAS (Seismic Attenuation System) has been developed with an international collaboration between TAMA, LIGO and some European institutes, with the main objective of achieving sufficient low frequency seismic attenuation. The system, not only suppresses the seismic noise well below the other noise levels present at very low frequencies around few Hz, but it also in turn reduces the residual motion of the optics to well below one micron, which is necessary for a stable operation of the interferometer. The SAS, basically a passive mechanical filter, constitutes of ultra low frequency mechanical isolators, an inverted pendulum and GAS (Geometric Anti-Sprig) filters. Additionally, the SAS is implemented with an active damping on the mechanical filters. Here we discuss the basics of passive isolation and main features employed by the SAS.
No associations
LandOfFree
SAS: low frequency Seismic Attenuation System does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with SAS: low frequency Seismic Attenuation System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SAS: low frequency Seismic Attenuation System will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1104385