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General Relativity and Quantum Cosmology

arXiv:2210.05934 (gr-qc)
[Submitted on 12 Oct 2022]

Title:Input optics systems of the KAGRA detector during O3GK

Authors:T. Akutsu, M. Ando, K. Arai, Y. Arai, S. Araki, A. Araya, N. Aritomi, H. Asada, Y. Aso, S. Bae, Y. Bae, L. Baiotti, R. Bajpai, M. A. Barton, K. Cannon, Z. Cao, E. Capocasa, M. Chan, C. Chen, K. Chen, Y. Chen, C-I. Chiang, H. Chu, Y-K. Chu, S. Eguchi, Y. Enomoto, R. Flaminio, Y. Fujii, Y. Fujikawa, M. Fukunaga, M. Fukushima, T. Furuhata, D. Gao, G.-G. Ge, S. Ha, A. Hagiwara, S. Haino, W.-B. Han, K. Hasegawa, K. Hattori, H. Hayakawa, K. Hayama, Y. Himemoto, Y. Hiranuma, N. Hirata, E. Hirose, Z. Hong, B-H. Hsieh, G-Z. Huang, H-Y. Huang, P. Huang, Y-C. Huang, Y.-J. Huang, D. C. Y. Hui, S. Ide, B. Ikenoue, S. Imam, K. Inayoshi, Y. Inoue, K. Ioka, K. Ito, Y. Itoh, K. Izumi, C. Jeon, H.-B. Jin, K. Jung, P. Jung, K. Kaihotsu, T. Kajita, M. Kakizaki, M. Kamiizumi, S. Kanbara, N. Kanda, G. Kang, Y. Kataoka, K. Kawaguchi, N. Kawai, T. Kawasaki, C. Kim, J. 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, Y. Kuromiya, S. Kuroyanagi, K. Kusayanagi et al. (153 additional authors not shown)  You must enable JavaScript to view entire author list.
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Abstract:KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25th to March 10th, 2020, and its first joint observation with the GEO 600 detector from April 7th -- 21st, 2020 (O3GK). This study presents an overview of the input optics systems of the KAGRA detector, which consist of various optical systems, such as a laser source, its intensity and frequency stabilization systems, modulators, a Faraday isolator, mode-matching telescopes, and a high-power beam dump. These optics were successfully delivered to the KAGRA interferometer and operated stably during the observations. The laser frequency noise was observed to limit the detector sensitivity above a few kHz, whereas the laser intensity did not significantly limit the detector sensitivity.
Subjects: General Relativity and Quantum Cosmology (gr-qc); Instrumentation and Detectors (physics.ins-det)
Cite as: arXiv:2210.05934 [gr-qc]
  (or arXiv:2210.05934v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.2210.05934

Submission history

From: Keiko Kokeyama [view email]
[v1] Wed, 12 Oct 2022 05:45:55 UTC (2,489 KB)
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