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, Virginio Sannibale, Kentaro Somiya, Ryutaro Takahashi, Hareem Tariq, Kimio Tsubono, Jose Ugas, Nicolas Viboud, Chenyang WangHiroaki Yamamoto, Tatsuo Yoda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


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 frequencies 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 is used to damp the rigid body resonances of the attenuation chain. Simulations, based on subsystem performance characterizations, indicate that the system can achieve rms mirror residual motion measured in a few tens of nanometres. 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 study.

Original languageEnglish
Pages (from-to)1605-1614
Number of pages10
JournalClassical and Quantum Gravity
Issue number7
Publication statusPublished - 2002 Apr 7
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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