Vibration isolation system with a compact damping system for power recycling mirrors of KAGRA. (12th April 2019)

• Record Type: Journal Article
• 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; Nguyen Quynh, L; Ni, 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; Peña Arellano, F E; 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; Tapia San Martin, E N; Tomaru, T; Tomura, T; Travasso, F; Tsubono, K; Tsuchida, S; Uchikata, N; Uchiyama, T; Uehara, T; Ueno, K; Uraguchi, F; Ushiba, T; van Putten, M H P M; 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;
• Is Part Of: Classical and quantum gravity. Volume 36:Number 9(2019:May)
• Publication Date: 2019-04-12
• Subjects: gravitational waves -- gravitational wave detector -- KAGRA -- vibration isolation -- control; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/ab0fcb
• Languages: English
• ISSNs: 0264-9381

Abstract

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.