Design and prototype tests of a seismic attenuation system for the advanced-LIGO output mode cleaner
Abstract
Abstract. Both present LIGO and advanced LIGO (Ad-LIGO) will need an output mode cleaner (OMC) to reach the desired sensitivity. We designed a suitable OMC seismically attenuated optical table fitting to the existing vacuum chambers (horizontal access module, HAM chambers). The most straightforward and cost-effective solution satisfying the Ad-LIGO seismic attenuation specifications was to implement a single passive seismic attenuation stage, derived from the 'seismic attenuation system' (SAS) concept. We built and tested prototypes of all critical components. On the basis of these tests and past experience, we expect that the passive attenuation performance of this new design, called HAM-SAS, will match all requirements for the LIGO OMC, and all Ad-LIGO optical tables. Its performance can be improved, if necessary, by implementation of a simple active attenuation loop at marginal additional cost. The design can be easily modified to equip the LIGO basic symmetric chamber (BSC) chambers and leaves space for extensive performance upgrades for future evolutions of Ad-LIGO. Design parameters and prototype test results are presented.
Additional Information
Copyright © Institute of Physics and IOP Publishing Limited 2006. Received 6 September 2005, in final form 9 November 2005. Published 24 March 2006. Print publication: Issue 8 (21 April 2006). 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-0107417.Additional details
- Eprint ID
- 15900
- DOI
- 10.1088/0264-9381/23/8/S15
- Resolver ID
- CaltechAUTHORS:20090917-091503540
- PHY-0107417
- NSF
- Created
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2009-09-29Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field