Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Precision Measurements and Metrology III

Q 29.4: Vortrag

Mittwoch, 10. März 2010, 14:45–15:00, A 310

Seismic Attenuation for the 10m Prototype — •Alexander Wanner for the AEI 10m Prototype Interferometer team — Max-Planck-Institut für Gravitationphysik (Albert-Einstein-Institut), Institut für Gravitationsphysik, Leibniz Universität Hannover, Callinstr. 38, D-30167 Hannover

A 10m Prototype Interferometer facility is currently being set up at the AEI in Hannover. The prototype interferometer will be used to test and develop some of the techniques for potential future upgrades of the gravitational-wave detector GEO600. Furthermore, experiments to explore quantum mechanical effects in macroscopic objects will be run in this facility. By now the ultra-high vacuum system is installed and fully operational. The next step is the installation of seismically isolated optical tables.

The basic stage of isolation will be a set of passive attenuation tables, based on the Advanced LIGO HAM-SAS design. Geometric anti-spring filters will provide vertical isolation (70dB above several Hertz). Attenuation in the horizontal direction (60dB above several Hertz) will be provided by inverted pendulum legs. Several sensors will provide signals for a real-time control system to allow further attenuation via feed-back actuators at the tables. This talk gives an overview of the design of the seismic attenuation system and of the most relevant subsystems of these tables for the 10m Prototype Interferometer.