KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25 to March 10, 2020, and its first joint observation with the GEO 600 detector from April 7 to April 21, 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 kilohertz, whereas the laser intensity did not significantly limit the detector sensitivity.

Input optics systems of the KAGRA detector during O3GK / Akutsu, T., Ando, M., Arai, K., Arai, Y., Araki, S., Araya, A., Aritomi, N., Asada, H., Aso, Y., Bae, S., Bae, Y., Baiotti, L., Bajpai, R., Barton, M.a., Cannon, K., Cao, Z., Capocasa, E., Chan, M., Chen, C., Chen, K., et al.. - In: PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS. - ISSN 2050-3911. - 2023:2(2023). [10.1093/ptep/ptac166]

Input optics systems of the KAGRA detector during O3GK

Leonardi, M;
2023-01-01

Abstract

KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25 to March 10, 2020, and its first joint observation with the GEO 600 detector from April 7 to April 21, 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 kilohertz, whereas the laser intensity did not significantly limit the detector sensitivity.
2023
2
Akutsu, T; Ando, M; Arai, K; Arai, Y; Araki, S; Araya, A; Aritomi, N; Asada, H; Aso, Y; Bae, S; Bae, Y; Baiotti, L; Bajpai, R; Barton, Ma; Cannon, K; ...espandi
Input optics systems of the KAGRA detector during O3GK / Akutsu, T., Ando, M., Arai, K., Arai, Y., Araki, S., Araya, A., Aritomi, N., Asada, H., Aso, Y., Bae, S., Bae, Y., Baiotti, L., Bajpai, R., Barton, M.a., Cannon, K., Cao, Z., Capocasa, E., Chan, M., Chen, C., Chen, K., et al.. - In: PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS. - ISSN 2050-3911. - 2023:2(2023). [10.1093/ptep/ptac166]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/398217
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