Anatomy of the TAMA SAS seismic attenuation system

Szabolcs Márka, Akiteru Takamori, Masaki Ando, Alessandro Bertolini, Giancarlo Cella, Riccardo DeSalvo, Mitsuhiro Fukushima, Yukiyoshi Iida, Florian Jacquier, Seiji Kawamura, Yuhiko Nishi, Kenji Numata (+10 others)
2002 Classical and quantum gravity  
The TAMA SAS Seismic Attenuation System was developed to provide the extremely high level of seismic isolation required by the next generation of interferometric gravitational wave detectors to achieve the desired sensitivity at low frequencies. Our aim was to provide good performance at frequency above ~10 Hz, while utilizing only passive subsystems in the sensitive frequency band of the TAMA interferometric gravitational wave detectors. The only active feedback is relegated below 6 Hz and it
more » ... s used to damp the attenuation chain rigid body mode resonances and achieve r.m.s. mirror residual motion measured in tens of nanometers. We will give a brief overview of the subsystems and point out some of the characterization results, supporting our claims of achieved performance. SAS is a passive, UHV compatible and low cost system. It is likely that extremely sensitive experiments in other fields will also profit from our work.
doi:10.1088/0264-9381/19/7/351 fatcat:gtoookbn2jhx7pngzhxitsa7hy