Passive-performance, analysis, and upgrades of a 1-ton seismic attenuation system

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Bergmann, G.; Mow-Lowry, C.M.; Adya, V.B.; Bertolini, A.; Hanke, M.M. et al.: Passive-performance, analysis, and upgrades of a 1-ton seismic attenuation system. In: Classical and Quantum Gravity 34 (2017), Nr. 6, 65002. DOI: https://doi.org/10.1088/1361-6382/aa5e1f

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Sum total of downloads: 90




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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.
License of this version: CC BY 3.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 58 64.44%
2 image of flag of United States United States 15 16.67%
3 image of flag of China China 6 6.67%
4 image of flag of United Kingdom United Kingdom 4 4.44%
5 image of flag of Argentina Argentina 3 3.33%
6 image of flag of Czech Republic Czech Republic 2 2.22%
7 image of flag of Russian Federation Russian Federation 1 1.11%
8 image of flag of Norway Norway 1 1.11%

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