Bergmann, G. et al. (2017) Passive-performance, analysis, and upgrades of a 1-ton seismic attenuation system. Classical and Quantum Gravity, 34(6), 065002. (doi: 10.1088/1361-6382/aa5e1f)
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Abstract
The 10 m prototype facility at the Albert–Einstein-institute (AEI) in Hanover, Germany, employs three large seismic attenuation systems to reduce mechanical motion. The AEI seismic-attenuation-system (AEI-SAS) uses mechanical anti-springs in order to achieve resonance frequencies below 0.5 Hz. This system provides passive isolation from ground motion by a factor of about 400 in the horizontal direction at 4 Hz and in the vertical direction at 9 Hz. The presented isolation performance is measured under vacuum conditions using a combination of commercial and custom-made inertial sensors. Detailed analysis of this performance led to the design and implementation of tuned dampers to mitigate the effect of the unavoidable higher order modes of the system. These dampers reduce RMS motion substantially in the frequency range between 10 and 100 Hz in 6 degrees of freedom. The results presented here demonstrate that the AEI-SAS provides substantial passive isolation at all the fundamental mirror-suspension resonances.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Strain, Professor Kenneth |
| Authors: | Bergmann, G., Mow-Lowry, C.M., Adya, V.B., Bertolini, A., Hanke, M.M., Kirchhoff, R., Köhlenbeck, S.M., Kühn, G., Oppermann, P., Wanner, A., Westphal, T., Wöhler, J., Wu, D.S., Lück, H., Strain, K.A., and Danzmann, K. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
| Journal Name: | Classical and Quantum Gravity |
| Publisher: | Institute of Physics |
| ISSN: | 0264-9381 |
| ISSN (Online): | 1361-6382 |
| Published Online: | 20 February 2017 |
| Copyright Holders: | Copyright © 2017 IOP Publishing Ltd |
| First Published: | First published in Classical and Quantum Gravity 34(6):065002 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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