A study on motion reduction for suspended platforms used in gravitational wave detectors

verfasst von
Sina M. Koehlenbeck, Conor M. Mow-Lowry, Gerald Bergmann, Robin Kirchoff, Philip Koch, Gerrit Kühn, Johannes Lehmann, Patrick Oppermann, Janis Wöhler, David S. Wu
Abstract

We report a reduction in motion for suspended seismic-isolation platforms in a gravitational wave detector prototype facility. We sense the distance between two seismic-isolation platforms with a suspension platform interferometer and the angular motion with two optical levers. Feedback control loops reduce the length changes between two platforms separated by 11.65m to 10pmHz-1/2 at 100mHz, and the angular motion of each platform is reduced to 1nradHz-1/2 at 100mHz. As a result, the length fluctuations in a suspended optical resonator on top of the platforms is reduced by three orders of magnitude. This result is of direct relevance to gravitational wave detectors that use similar suspended optics and seismic isolation platforms.

Organisationseinheit(en)
Institut für Gravitationsphysik
QuantumFrontiers
Externe Organisation(en)
Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Vrije Universiteit
Fritz-Haber-Institut der Max-Planck-Gesellschaft
Typ
Artikel
Journal
Scientific reports
Band
13
ISSN
2045-2322
Publikationsdatum
10.02.2023
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Allgemein
Elektronische Version(en)
https://doi.org/10.1038/s41598-023-29418-x (Zugang: Offen)