Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope
arXiv:1709.02574 · doi:10.1088/1361-6382/aa90e3
Abstract
KAGRA is a 3-km cryogenic interferometric gravitational wave telescope located at an underground site in Japan. In order to achieve its target sensitivity, the relative positions of the mirrors of the interferometer must be finely adjusted with attached actuators. We have developed a model to simulate the length control loops of the KAGRA interferometer with realistic suspension responses and various noises for mirror actuation. Using our model, we have designed the actuation parameters to have sufficient force range to acquire lock as well as to control all the length degrees of freedom without introducing excess noise.
arXiv comment21 pages, 7 figures (typo in p.12 on magnetic field gradient fixed for v3)
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- Cryogenic suspension design for a kilometer-scale gravitational-wave detector
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- Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA
- Compact integrated optical sensors and electromagnetic actuators for vibration isolation systems in the gravitational-wave detector KAGRA
- Development of advanced photon calibrator for Kamioka gravitational wave detector (KAGRA)
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