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29 March 2024
 
  » arxiv » 1901.9666

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A compact actively damped vibration isolation platform for optical experiments in ultra-high vacuum
Álvaro Fernández Galiana ; Lee McCuller ; Jeff Kissel ; Lisa Barsotti ; John Miller ; Maggie Tse ; Matthew Evans ; Stuart M. Aston ; Thomas J. Shaffer ; Arnaud Pele ; Janeen H. Romie ; Betsy Weaver ; Peter Fritschel ; Nergis Mavalvala ; Fabrice Matichard ;
Date 24 Jan 2019
AbstractWe present a tabletop six-axis vibration isolation system, compatible with Ultra-High Vacuum (UHV), which is actively damped and provides 25 dB of isolation at 10 Hz and 65 dB at 100 Hz. While this isolation platform has been primarily designed to support optics in the LIGO detectors, it is suitable for a variety of applications. The system has been engineered to facilitate the construction and assembly process, while minimizing cost. The platform provides passive isolation for six degrees of freedom of passive isolation using a combination of vertical springs and horizontal pendula. It is instrumented with voice-coil actuators and optical shadow sensors to damp the resonances. All materials are compatible with stringent vacuum requirements. Thanks to its architecture, the system’s footprint can be adapted to meet spatial requirements, while maximizing the optical table’s dimensions. Three units are currently operation for LIGO. We present the system’s design, controls principles, and experimental results.
Source arXiv, 1901.9666
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