Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA

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Title:	Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA
Authors:	Akiyama, Y;Akutsu, T;Ando, M;Arai, K;Arai, Y;Araki, S;Araya, A;Aritomi, N;Asada, H;Aso, Y;Bae, S;Baiotti, L;Barton, M A;Cannon, K;Capocasa, E;Chen, C-S;Chiu, T-W;Cho, K;Chu, Y-K;Craig, K;Dattilo, V;Doi, K;Enomoto, Y;Flaminio, R;Fujii, Y;Fujimoto, M-K;Fukunaga, M;Fukushima, M;Furuhata, T;Haino, S;Hasegawa, K;Hashimoto, Y;Hashino, K;Hayama, K;Hirayama, T;Hirose, E;Hsieh, B H;Huang, C-Z;Ikenoue, B;Inoue, Y;Ioka, K;Itoh, Y;Izumi, K;Kaji, T;Kajita, T;Kakizaki, M;Kamiizumi, M;Kanbara, S;Kanda, N;Kanemura, S;Kang, G;Kasuya, J;Kawai, N;Kawasaki, T;Kim, C;Kim, W S;Kim, J;Kim, J C;Kimura, N;Kirii, S;Kitaoka, Y;Kitazawa, H;Kojima, Y;Kokeyama, K;Komori, K;Kong, A;Kotake, K;Kozu, R;Kumar, R;Kuo, H-S;Kuroki, S;Kuroyanagi, S;Lee, H K;Lee, H M;Lee, H W;Leonardi, M;Lin, C-Y;Lin, F-L;Liu, G C;Marchio, M;Matsui, T;Michimura, Y;Mio, N;Miyakawa, O;Miyamoto, A;Miyoki, S;Morii, W;Morisaki, S;Moriwaki, Y;Musha, M;Nagano, S;Nagano, K;Nakamura, K;Nakamura, T;Nakano, H;Nakano, M;Narikawa, T;Quynh, L Nguyen;Ni, a W-T;Nishizawa, A;Obuchi, Y;Oh, J;Oh, S H;Ohashi, M;Ohishi, N;Ohkawa, M;Okutomi, K;Ono, K;Oohara, K;Ooi, C P;Pan, S-S;Paoletti, F;Park, J;Passaquieti, R;Arellano, F E Peña;Sago, N;Saito, S;Saito, Y;Sakai, K;Sakai, Y;Sasai, M;Sato, S;Sato, T;Sekiguchi, T;Sekiguchi, Y;Shibata, M;Shimoda, T;Shinkai, H;Shishido, T;Shoda, A;Someya, N;Somiya, K;Son, E J;Suemasa, A;Suzuki, T;Suzuki, T;Tagoshi, H;Tahara, H;Takahashi, H;Takahashi, R;Takeda, H;Tanaka, H;Tanaka, K;Tanaka, T;Tanioka, S;Martin, E N Tapia San;Tomaru, T;Tomura, T;Travasso, F;Tsubono, K;Tsuchida, S;Uchikata, N;Uchiyama, T;Uehara, T;Ueno, K;Uraguchi, F;Ushiba, T;Putten, M H P M van;Vocca, H;Wakamatsu, T;Watanabe, Y;Xu, W-R;Yamada, T;Yamamoto, K;Yamamoto, K;Yamamoto, S;Yamamoto, T;Yokogawa, K;Yokoyama, J;Yokozawa, T;Yoshioka, T;Yuzurihara, H;Zeidler, S;Zhu, Z-H
Keywords:	gravitational waves;gravitational wave detector;KAGRA;vibration isolation;control
Date:	2019-04-12
Issue Date:	2020-07-21 12:10:21 (UTC+8)
Publisher:	Gravity Institute of Physics Publishing Ltd.
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.
Relation:	Classical and Quantum Gravity 36(9), 095015
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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