The Seismic Attenuation System (SAS) for the Advanced LIGO gravitational wave interferometric detectors
Abstract
New seismic pre-isolation systems will have to be included in the forthcoming gravitational wave interferometers of Advanced LIGO as part of the strategy to increase the sensitivity in the entire frequency range. In this perspective the LIGO Seismic Attenuation System (SAS) Group designed a new kind of seismic attenuation platforms for the Horizontal Access Module (HAM) and Basic Symmetric Chamber (BSC) vacuum chambers of the interferometers. HAM-SAS, a specific prototype for the HAM chambers, was constructed and installed in a test-bench laboratory. At the end of the commissioning time the prototype achieved many of the Advanced LIGO requirements about seismic isolation, stability and reliability. The lab experience also enabled us to finalize the design and indicated SAS as a solution worth considering for the seismic isolation of the advanced detectors.
Additional Information
© 2008 Elsevier B.V. Received 9 August 2008; revised 12 October 2008; accepted 15 October 2008. Available online 5 November 2008. The authors thank Stan Whitcomb: he understands the problems addressed by this work. Without his support the HAM-SAS prototype would have never been built. Thanks are also due to Tullio Beneforti, Marcello Berchiolli, Maurizio Caturegli, Robert Laliberte, Myron MacInnis, Stefano Molesti, Mauro Morelli, Damiano Pescallini, Paolo Soldi. Their masterful and enthusiastic technical support made it possible to realize this very difficult project. Yumei Huang and Ilaria Taurasi also contributed with Finite Element Analysis of mechanical parts. The authors gratefully acknowledge the support of the United States National Science Foundation for the construction and operation of LIGO Interferometers. The LIGO observatories were constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation under cooperative agreement PHY 9210038. The LIGO Laboratory operates under cooperative agreement PHY-0107417.Additional details
- Eprint ID
- 16151
- Resolver ID
- CaltechAUTHORS:20091001-114451091
- PHY-9210038
- NSF
- PHY-0107417
- NSF
- Created
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2009-10-15Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field