An arm length stabilization system for KAGRA and future gravitational-wave detectors

T. Akutsu; M. Ando; K. Arai; K. Arai; Y. Arai; S. Araki; A. Araya; N. Aritomi; Y. Aso; S. Bae; Y. Bae; L. Baiotti; R. Bajpai; M. A. Barton; K. Cannon; E. Capocasa; M. Chan; C. S. Chen; K. Chen; Y. Chen; H. Chu; Y. K. Chu; K. Doi; S. Eguchi; Y. Enomoto; R. Flaminio; Y. Fujii; M. Fukunaga; M. Fukushima; G. G. Ge; A. Hagiwara; S. Haino; K. Hasegawa; H. Hayakawa; K. Hayama; Y. Himemoto; Y. Hiranuma; N. Hirata; E. Hirose; Z. Hong; B. H. Hsieh; G. Z. Huang; P. W. Huang; Y. Huang; B. Ikenoue; S. Imam; K. Inayoshi; Y. Inoue; K. Ioka; Y. Itoh; K. Izumi; K. Jung; P. Jung; T. Kajita; M. Kamiizumi; S. Kanbara; N. Kanda; G. Kang; K. Kawaguchi; N. Kawai; T. Kawasaki; C. Kim; J. C. Kim; W. S. Kim; Y. M. Kim; N. Kimura; N. Kita; H. Kitazawa; Y. Kojima; K. Kokeyama; K. Komori; A. K.H. Kong; K. Kotake; C. Kozakai; R. Kozu; R. Kumar; J. Kume; C. Kuo; H. S. Kuo; S. Kuroyanagi; K. Kusayanagi; K. Kwak; H. K. Lee; H. W. Lee; R. Lee; M. Leonardi; L. C.C. Lin; C. Y. Lin; F. L. Lin; G. C. Liu; L. W. Luo; M. Marchio; Y. Michimura; N. Mio; O. Miyakawa; A. Miyamoto; Y. Miyazaki; K. Miyo; S. Miyoki; S. Morisaki; Y. Moriwaki; M. Musha; K. Nagano; S. Nagano; K. Nakamura; H. Nakano; M. Nakano; R. Nakashima; T. Narikawa; R. Negishi; W. T. Ni; A. Nishizawa; Y. Obuchi; W. Ogaki; J. J. Oh; S. H. Oh; M. Ohashi; N. Ohishi; M. Ohkawa; N. Ohmae; K. Okutomi; K. Oohara; C. P. Ooi; S. Oshino; K. C. Pan; H. Pang; J. Park; F. E. Peña Arellano; I. Pinto; N. Sago; S. Saito; Y. Saito; K. Sakai; Y. Sakai; Y. Sakuno; S. Sato; T. Sato; T. Sawada; T. Sekiguchi; Y. Sekiguchi; S. Shibagaki; R. Shimizu; T. Shimoda; K. Shimode; H. Shinkai; T. Shishido; A. Shoda; K. Somiya; E. J. Son; H. Sotani; R. Sugimoto; T. Suzuki; T. Suzuki; H. Tagoshi; H. Takahashi; R. Takahashi; A. Takamori; S. Takano; H. Takeda; M. Takeda; H. Tanaka; K. Tanaka; K. Tanaka; T. Tanaka; T. Tanaka; S. Tanioka; E. N. Tapia San Martin; D. Tatsumi; S. Telada; T. Tomaru; Y. Tomigami; T. Tomura; F. Travasso; L. Trozzo; T. Tsang; K. Tsubono; S. Tsuchida; T. Tsuzuki; D. Tuyenbayev; N. Uchikata; T. Uchiyama; A. Ueda; T. Uehara; K. Ueno; G. Ueshima; F. Uraguchi; T. Ushiba; M. H.P.M. van Putten; H. Vocca; J. Wang; C. Wu; H. Wu; S. Wu; W. R. Xu; T. Yamada; K. Yamamoto; K. Yamamoto; T. Yamamoto; K. Yokogawa; J. Yokoyama; T. Yokozawa; T. Yoshioka; H. Yuzurihara; S. Zeidler; Y. Zhao; Z. H. Zhu

doi:10.1088/1361-6382/ab5c95

An arm length stabilization system for KAGRA and future gravitational-wave detectors

T. Akutsu, M. Ando, K. Arai, K. Arai, Y. Arai, S. Araki, A. Araya, N. Aritomi, Y. Aso, S. Bae, Y. Bae, L. Baiotti, R. Bajpai, M. A. Barton, K. Cannon, E. Capocasa, M. Chan, C. S. Chen, K. Chen, Y. ChenH. Chu, Y. K. Chu, K. Doi, S. Eguchi, Y. Enomoto^*, R. Flaminio, Y. Fujii, M. Fukunaga, M. Fukushima, G. G. Ge, A. Hagiwara, S. Haino, K. Hasegawa, H. Hayakawa, K. Hayama, Y. Himemoto, Y. Hiranuma, N. Hirata, E. Hirose, Z. Hong, B. H. Hsieh, G. Z. Huang, P. W. Huang, Y. Huang, B. Ikenoue, S. Imam, K. Inayoshi, Y. Inoue, K. Ioka, Y. Itoh, K. Izumi, K. Jung, P. Jung, T. Kajita, M. Kamiizumi, S. Kanbara, N. Kanda, G. Kang, K. Kawaguchi, N. Kawai, T. Kawasaki, C. Kim, J. C. Kim, W. S. Kim, Y. M. Kim, N. Kimura, N. Kita, H. Kitazawa, Y. Kojima, K. Kokeyama, K. Komori, A. K.H. Kong, K. Kotake, C. Kozakai, R. Kozu, R. Kumar, J. Kume, C. Kuo, H. S. Kuo, S. Kuroyanagi, K. Kusayanagi, K. Kwak, H. K. Lee, H. W. Lee, R. Lee, M. Leonardi, L. C.C. Lin, C. Y. Lin, F. L. Lin, G. C. Liu, L. W. Luo, M. Marchio, Y. Michimura, N. Mio, O. Miyakawa, A. Miyamoto, Y. Miyazaki, K. Miyo, S. Miyoki, S. Morisaki, Y. Moriwaki, M. Musha, K. Nagano, S. Nagano, K. Nakamura, H. Nakano, M. Nakano, R. Nakashima, T. Narikawa, R. Negishi, W. T. Ni, A. Nishizawa, Y. Obuchi, W. Ogaki, J. J. Oh, S. H. Oh, M. Ohashi, N. Ohishi, M. Ohkawa, N. Ohmae, K. Okutomi, K. Oohara, C. P. Ooi, S. Oshino, K. C. Pan, H. Pang, J. Park, F. E. Peña Arellano, I. Pinto, N. Sago, S. Saito, Y. Saito, K. Sakai, Y. Sakai, Y. Sakuno, S. Sato, T. Sato, T. Sawada, T. Sekiguchi, Y. Sekiguchi, S. Shibagaki, R. Shimizu, T. Shimoda, K. Shimode, H. Shinkai, T. Shishido, A. Shoda, K. Somiya, E. J. Son, H. Sotani, R. Sugimoto, T. Suzuki, T. Suzuki, H. Tagoshi, H. Takahashi, R. Takahashi, A. Takamori, S. Takano, H. Takeda, M. Takeda, H. Tanaka, K. Tanaka, K. Tanaka, T. Tanaka, T. Tanaka, S. Tanioka, E. N. Tapia San Martin, D. Tatsumi, S. Telada, T. Tomaru, Y. Tomigami, T. Tomura, F. Travasso, L. Trozzo, T. Tsang, K. Tsubono, S. Tsuchida, T. Tsuzuki, D. Tuyenbayev, N. Uchikata, T. Uchiyama, A. Ueda, T. Uehara, K. Ueno, G. Ueshima, F. Uraguchi, T. Ushiba, M. H.P.M. van Putten, H. Vocca, J. Wang, C. Wu, H. Wu, S. Wu, W. R. Xu, T. Yamada, K. Yamamoto, K. Yamamoto, T. Yamamoto, K. Yokogawa, J. Yokoyama, T. Yokozawa, T. Yoshioka, H. Yuzurihara, S. Zeidler, Y. Zhao, Z. H. Zhu

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner.

Original language	English
Article number	035004
Journal	Classical and Quantum Gravity
Volume	37
Issue number	3
DOIs	https://doi.org/10.1088/1361-6382/ab5c95
Publication status	Published - 2020 Jan 13

Keywords

Gravitational-wave detector
Interferometer
Multi-colour

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1088/1361-6382/ab5c95

Cite this

Akutsu, T., Ando, M., Arai, K., Arai, K., Arai, Y., Araki, S., Araya, A., Aritomi, N., Aso, Y., Bae, S., Bae, Y., Baiotti, L., Bajpai, R., Barton, M. A., Cannon, K., Capocasa, E., Chan, M., Chen, C. S., Chen, K., ... Zhu, Z. H. (2020). An arm length stabilization system for KAGRA and future gravitational-wave detectors. Classical and Quantum Gravity, 37(3), Article 035004. https://doi.org/10.1088/1361-6382/ab5c95

Akutsu, T, Ando, M, Arai, K, Arai, K, Arai, Y, Araki, S, Araya, A, Aritomi, N, Aso, Y, Bae, S, Bae, Y, Baiotti, L, Bajpai, R, Barton, MA, Cannon, K, Capocasa, E, Chan, M, Chen, CS, Chen, K, Chen, Y, Chu, H, Chu, YK, Doi, K, Eguchi, S, Enomoto, Y, Flaminio, R, Fujii, Y, Fukunaga, M, Fukushima, M, Ge, GG, Hagiwara, A, Haino, S, Hasegawa, K, Hayakawa, H, Hayama, K, Himemoto, Y, Hiranuma, Y, Hirata, N, Hirose, E, Hong, Z, Hsieh, BH, Huang, GZ, Huang, PW, Huang, Y, Ikenoue, B, Imam, S, Inayoshi, K, Inoue, Y, Ioka, K, Itoh, Y, Izumi, K, Jung, K, Jung, P, Kajita, T, Kamiizumi, M, Kanbara, S, Kanda, N, Kang, G, Kawaguchi, K, Kawai, N, Kawasaki, T, Kim, C, Kim, JC, Kim, WS, Kim, YM, Kimura, N, Kita, N, Kitazawa, H, Kojima, Y, Kokeyama, K, Komori, K, Kong, AKH, Kotake, K, Kozakai, C, Kozu, R, Kumar, R, Kume, J, Kuo, C, Kuo, HS, Kuroyanagi, S, Kusayanagi, K, Kwak, K, Lee, HK, Lee, HW, Lee, R, Leonardi, M, Lin, LCC, Lin, CY, Lin, FL, Liu, GC, Luo, LW, Marchio, M, Michimura, Y, Mio, N, Miyakawa, O, Miyamoto, A, Miyazaki, Y, Miyo, K, Miyoki, S, Morisaki, S, Moriwaki, Y, Musha, M, Nagano, K, Nagano, S, Nakamura, K, Nakano, H, Nakano, M, Nakashima, R, Narikawa, T, Negishi, R, Ni, WT, Nishizawa, A, Obuchi, Y, Ogaki, W, Oh, JJ, Oh, SH, Ohashi, M, Ohishi, N, Ohkawa, M, Ohmae, N, Okutomi, K, Oohara, K, Ooi, CP, Oshino, S, Pan, KC, Pang, H, Park, J, Peña Arellano, FE, Pinto, I, Sago, N, Saito, S, Saito, Y, Sakai, K, Sakai, Y, Sakuno, Y, Sato, S, Sato, T, Sawada, T, Sekiguchi, T, Sekiguchi, Y, Shibagaki, S, Shimizu, R, Shimoda, T, Shimode, K, Shinkai, H, Shishido, T, Shoda, A, Somiya, K, Son, EJ, Sotani, H, Sugimoto, R, Suzuki, T, Suzuki, T, Tagoshi, H, Takahashi, H, Takahashi, R, Takamori, A, Takano, S, Takeda, H, Takeda, M, Tanaka, H, Tanaka, K, Tanaka, K, Tanaka, T, Tanaka, T, Tanioka, S, Tapia San Martin, EN, Tatsumi, D, Telada, S, Tomaru, T, Tomigami, Y, Tomura, T, Travasso, F, Trozzo, L, Tsang, T, Tsubono, K, Tsuchida, S, Tsuzuki, T, Tuyenbayev, D, Uchikata, N, Uchiyama, T, Ueda, A, Uehara, T, Ueno, K, Ueshima, G, Uraguchi, F, Ushiba, T, van Putten, MHPM, Vocca, H, Wang, J, Wu, C, Wu, H, Wu, S, Xu, WR, Yamada, T, Yamamoto, K, Yamamoto, K, Yamamoto, T, Yokogawa, K, Yokoyama, J, Yokozawa, T, Yoshioka, T, Yuzurihara, H, Zeidler, S, Zhao, Y & Zhu, ZH 2020, 'An arm length stabilization system for KAGRA and future gravitational-wave detectors', Classical and Quantum Gravity, vol. 37, no. 3, 035004. https://doi.org/10.1088/1361-6382/ab5c95

@article{a1d1c206c9d84366af6ebfc75e85fe2c,

title = "An arm length stabilization system for KAGRA and future gravitational-wave detectors",

abstract = "Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner.",

keywords = "Gravitational-wave detector, Interferometer, Multi-colour",

author = "T. Akutsu and M. Ando and K. Arai and K. Arai and Y. Arai and S. Araki and A. Araya and N. Aritomi and Y. Aso and S. Bae and Y. Bae and L. Baiotti and R. Bajpai and Barton, {M. A.} and K. Cannon and E. Capocasa and M. Chan and Chen, {C. S.} and K. Chen and Y. Chen and H. Chu and Chu, {Y. K.} and K. Doi and S. Eguchi and Y. Enomoto and R. Flaminio and Y. Fujii and M. Fukunaga and M. Fukushima and Ge, {G. G.} and A. Hagiwara and S. Haino and K. Hasegawa and H. Hayakawa and K. Hayama and Y. Himemoto and Y. Hiranuma and N. Hirata and E. Hirose and Z. Hong and Hsieh, {B. H.} and Huang, {G. Z.} and Huang, {P. W.} and Y. Huang and B. Ikenoue and S. Imam and K. Inayoshi and Y. Inoue and K. Ioka and Y. Itoh and K. Izumi and K. Jung and P. Jung and T. Kajita and M. Kamiizumi and S. Kanbara and N. Kanda and G. Kang and K. Kawaguchi and N. Kawai and T. Kawasaki and C. Kim and Kim, {J. C.} and Kim, {W. S.} and Kim, {Y. M.} and N. Kimura and N. Kita and H. Kitazawa and Y. Kojima and K. Kokeyama and K. Komori and Kong, {A. K.H.} and K. Kotake and C. Kozakai and R. Kozu and R. Kumar and J. Kume and C. Kuo and Kuo, {H. S.} and S. Kuroyanagi and K. Kusayanagi and K. Kwak and Lee, {H. K.} and Lee, {H. W.} and R. Lee and M. Leonardi and Lin, {L. C.C.} and Lin, {C. Y.} and Lin, {F. L.} and Liu, {G. C.} and Luo, {L. W.} and M. Marchio and Y. Michimura and N. Mio and O. Miyakawa and A. Miyamoto and Y. Miyazaki and K. Miyo and S. Miyoki and S. Morisaki and Y. Moriwaki and M. Musha and K. Nagano and S. Nagano and K. Nakamura and H. Nakano and M. Nakano and R. Nakashima and T. Narikawa and R. Negishi and Ni, {W. T.} and A. Nishizawa and Y. Obuchi and W. Ogaki and Oh, {J. J.} and Oh, {S. H.} and M. Ohashi and N. Ohishi and M. Ohkawa and N. Ohmae and K. Okutomi and K. Oohara and Ooi, {C. P.} and S. Oshino and Pan, {K. C.} and H. Pang and J. Park and {Pe{\~n}a Arellano}, {F. E.} and I. Pinto and N. Sago and S. Saito and Y. Saito and K. Sakai and Y. Sakai and Y. Sakuno and S. Sato and T. Sato and T. Sawada and T. Sekiguchi and Y. Sekiguchi and S. Shibagaki and R. Shimizu and T. Shimoda and K. Shimode and H. Shinkai and T. Shishido and A. Shoda and K. Somiya and Son, {E. J.} and H. Sotani and R. Sugimoto and T. Suzuki and T. Suzuki and H. Tagoshi and H. Takahashi and R. Takahashi and A. Takamori and S. Takano and H. Takeda and M. Takeda and H. Tanaka and K. Tanaka and K. Tanaka and T. Tanaka and T. Tanaka and S. Tanioka and {Tapia San Martin}, {E. N.} and D. Tatsumi and S. Telada and T. Tomaru and Y. Tomigami and T. Tomura and F. Travasso and L. Trozzo and T. Tsang and K. Tsubono and S. Tsuchida and T. Tsuzuki and D. Tuyenbayev and N. Uchikata and T. Uchiyama and A. Ueda and T. Uehara and K. Ueno and G. Ueshima and F. Uraguchi and T. Ushiba and {van Putten}, {M. H.P.M.} and H. Vocca and J. Wang and C. Wu and H. Wu and S. Wu and Xu, {W. R.} and T. Yamada and K. Yamamoto and K. Yamamoto and T. Yamamoto and K. Yokogawa and J. Yokoyama and T. Yokozawa and T. Yoshioka and H. Yuzurihara and S. Zeidler and Y. Zhao and Zhu, {Z. H.}",

note = "Publisher Copyright: {\textcopyright} 2020 IOP Publishing Ltd",

year = "2020",

month = jan,

day = "13",

doi = "10.1088/1361-6382/ab5c95",

language = "English",

volume = "37",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "3",

}

TY - JOUR

T1 - An arm length stabilization system for KAGRA and future gravitational-wave detectors

AU - Akutsu, T.

AU - Ando, M.

AU - Arai, K.

AU - Arai, Y.

AU - Araki, S.

AU - Araya, A.

AU - Aritomi, N.

AU - Aso, Y.

AU - Bae, S.

AU - Bae, Y.

AU - Baiotti, L.

AU - Bajpai, R.

AU - Barton, M. A.

AU - Cannon, K.

AU - Capocasa, E.

AU - Chan, M.

AU - Chen, C. S.

AU - Chen, K.

AU - Chen, Y.

AU - Chu, H.

AU - Chu, Y. K.

AU - Doi, K.

AU - Eguchi, S.

AU - Enomoto, Y.

AU - Flaminio, R.

AU - Fujii, Y.

AU - Fukunaga, M.

AU - Fukushima, M.

AU - Ge, G. G.

AU - Hagiwara, A.

AU - Haino, S.

AU - Hasegawa, K.

AU - Hayakawa, H.

AU - Hayama, K.

AU - Himemoto, Y.

AU - Hiranuma, Y.

AU - Hirata, N.

AU - Hirose, E.

AU - Hong, Z.

AU - Hsieh, B. H.

AU - Huang, G. Z.

AU - Huang, P. W.

AU - Huang, Y.

AU - Ikenoue, B.

AU - Imam, S.

AU - Inayoshi, K.

AU - Inoue, Y.

AU - Ioka, K.

AU - Itoh, Y.

AU - Izumi, K.

AU - Jung, K.

AU - Jung, P.

AU - Kajita, T.

AU - Kamiizumi, M.

AU - Kanbara, S.

AU - Kanda, N.

AU - Kang, G.

AU - Kawaguchi, K.

AU - Kawai, N.

AU - Kawasaki, T.

AU - Kim, C.

AU - Kim, J. C.

AU - Kim, W. S.

AU - Kim, Y. M.

AU - Kimura, N.

AU - Kita, N.

AU - Kitazawa, H.

AU - Kojima, Y.

AU - Kokeyama, K.

AU - Komori, K.

AU - Kong, A. K.H.

AU - Kotake, K.

AU - Kozakai, C.

AU - Kozu, R.

AU - Kumar, R.

AU - Kume, J.

AU - Kuo, C.

AU - Kuo, H. S.

AU - Kuroyanagi, S.

AU - Kusayanagi, K.

AU - Kwak, K.

AU - Lee, H. K.

AU - Lee, H. W.

AU - Lee, R.

AU - Leonardi, M.

AU - Lin, L. C.C.

AU - Lin, C. Y.

AU - Lin, F. L.

AU - Liu, G. C.

AU - Luo, L. W.

AU - Marchio, M.

AU - Michimura, Y.

AU - Mio, N.

AU - Miyakawa, O.

AU - Miyamoto, A.

AU - Miyazaki, Y.

AU - Miyo, K.

AU - Miyoki, S.

AU - Morisaki, S.

AU - Moriwaki, Y.

AU - Musha, M.

AU - Nagano, K.

AU - Nagano, S.

AU - Nakamura, K.

AU - Nakano, H.

AU - Nakano, M.

AU - Nakashima, R.

AU - Narikawa, T.

AU - Negishi, R.

AU - Ni, W. T.

AU - Nishizawa, A.

AU - Obuchi, Y.

AU - Ogaki, W.

AU - Oh, J. J.

AU - Oh, S. H.

AU - Ohashi, M.

AU - Ohishi, N.

AU - Ohkawa, M.

AU - Ohmae, N.

AU - Okutomi, K.

AU - Oohara, K.

AU - Ooi, C. P.

AU - Oshino, S.

AU - Pan, K. C.

AU - Pang, H.

AU - Park, J.

AU - Peña Arellano, F. E.

AU - Pinto, I.

AU - Sago, N.

AU - Saito, S.

AU - Saito, Y.

AU - Sakai, K.

AU - Sakai, Y.

AU - Sakuno, Y.

AU - Sato, S.

AU - Sato, T.

AU - Sawada, T.

AU - Sekiguchi, T.

AU - Sekiguchi, Y.

AU - Shibagaki, S.

AU - Shimizu, R.

AU - Shimoda, T.

AU - Shimode, K.

AU - Shinkai, H.

AU - Shishido, T.

AU - Shoda, A.

AU - Somiya, K.

AU - Son, E. J.

AU - Sotani, H.

AU - Sugimoto, R.

AU - Suzuki, T.

AU - Tagoshi, H.

AU - Takahashi, H.

AU - Takahashi, R.

AU - Takamori, A.

AU - Takano, S.

AU - Takeda, H.

AU - Takeda, M.

AU - Tanaka, H.

AU - Tanaka, K.

AU - Tanaka, T.

AU - Tanioka, S.

AU - Tapia San Martin, E. N.

AU - Tatsumi, D.

AU - Telada, S.

AU - Tomaru, T.

AU - Tomigami, Y.

AU - Tomura, T.

AU - Travasso, F.

AU - Trozzo, L.

AU - Tsang, T.

AU - Tsubono, K.

AU - Tsuchida, S.

AU - Tsuzuki, T.

AU - Tuyenbayev, D.

AU - Uchikata, N.

AU - Uchiyama, T.

AU - Ueda, A.

AU - Uehara, T.

AU - Ueno, K.

AU - Ueshima, G.

AU - Uraguchi, F.

AU - Ushiba, T.

AU - van Putten, M. H.P.M.

AU - Vocca, H.

AU - Wang, J.

AU - Wu, C.

AU - Wu, H.

AU - Wu, S.

AU - Xu, W. R.

AU - Yamada, T.

AU - Yamamoto, K.

AU - Yamamoto, T.

AU - Yokogawa, K.

AU - Yokoyama, J.

AU - Yokozawa, T.

AU - Yoshioka, T.

AU - Yuzurihara, H.

AU - Zeidler, S.

AU - Zhao, Y.

AU - Zhu, Z. H.

PY - 2020/1/13

Y1 - 2020/1/13

N2 - Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner.

AB - Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner.

KW - Gravitational-wave detector

KW - Interferometer

KW - Multi-colour

UR - http://www.scopus.com/inward/record.url?scp=85080069599&partnerID=8YFLogxK

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U2 - 10.1088/1361-6382/ab5c95

DO - 10.1088/1361-6382/ab5c95

M3 - Article

AN - SCOPUS:85080069599

SN - 0264-9381

VL - 37

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 3

M1 - 035004

ER -

An arm length stabilization system for KAGRA and future gravitational-wave detectors

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