Abstract
A vibration isolation system called the Type-Bp system used for power recycling mirrors has been developed for KAGRA, the interferometric gravitational-wave observatory in Japan. A suspension of the Type-Bp system passively isolates an optic from seismic vibration using three main pendulum stages equipped with two vertical vibration isolation systems. A compact reaction mass around each of the main stages allows for achieving sufficient damping performance with a simple feedback as well as vibration isolation ratio. Three Type-Bp systems were installed in KAGRA, and were proved to satisfy the requirements on the damping performance, and also on estimated residual displacement of the optics.
| Original language | English |
|---|---|
| Article number | 095015 |
| Journal | Classical and Quantum Gravity |
| Volume | 36 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2019 Apr 12 |
Keywords
- KAGRA
- control
- gravitational wave detector
- gravitational waves
- vibration isolation
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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