Speaker
Description
The Omnisens experiment aims to demonstrate the feasibility of a high-gain inertial isolation platform that acts on six degrees of freedom between 0.01 and 30 Hz, while following a softly suspended, high-moment-of-inertia reference mass.
Such a platform (combined with an inverted pendulum and multi-stage pendulum chain) strongly suppresses tilt-to-length couplings spoiling the 2-10 Hz band of the ET low-frequency sensitivity, while allowing the overall height of the isolation system to be kept well below 12 meters.
After years of design and installation activities, the Omnisens platform is almost complete, and its sensors and control systems have been commissioned in the past six months.
While it is still early to evaluate the final performance of the system, we will present very encouraging results regarding the platform mechanics and actuation, reference mass DOF separation, sensor reliability in tracking high-displacements of the reference mass, and performance of the electrostatic actuation applied to suppress reference mass drifts.