KAGRA is a 3-km interferometric gravitational wave telescope located in the Kamioka mine in Japan. It is the first km-class gravitational wave telescope constructed underground to reduce seismic noise, and the first km-class telescope to use cryogenic cooling of test masses to reduce thermal noise. The construction of the infrastructure to house the interferometer in the tunnel, and the initial phase operation of the interferometer with a simple 3-km Michelson configuration have been completed. The first cryogenic operation is expected in 2018, and the observing runs with a full interferometer are expected in 2020s. The basic interferometer configuration and the current status of KAGRA are described.

The status of KAGRA underground cryogenic gravitational wave telescope / Akutsu, T.; Ando, M.; Araya, A.; Aritomi, N.; Asada, H.; Aso, Y.; Atsuta, S.; Awai, K.; Barton, M. A.; Cannon, K.; Craig, K.; Creus, W.; Doi, K.; Eda, K.; Enomoto, Y.; Flaminio, R.; Fujii, Y.; Fujimoto, M. -K.; Furuhata, T.; Haino, S.; Hasegawa, K.; Hashino, K.; Hayama, K.; Hirobayashi, S.; Hirose, E.; Hsieh, A. H.; Inoue, Y.; Ioka, K.; Itoh, Y.; Kaji, T.; Kajita, T.; Kakizaki, M.; Kamiizumi, M.; Kambara, S.; Kanda, N.; Kanemura, S.; Kaneyama, M.; Kang, G.; Kasuya, J.; Kataoka, Y.; Kawai, N.; Kawamura, S.; Kim, C.; Kim, H.; Kim, J.; Kim, Y.; Kimura, N.; Kinugawa, T.; Kirii, S.; Kitaoka, Y.; Kojima, Y.; Kokeyama, K.; Komori, K.; Kotake, K.; Kumar, R.; Lee, H.; Lee, H.; Liu, Y.; Luca, N.; Majorana, E.; Mano, S.; Marchio, M.; Matsui, T.; Matsushima, F.; Michimura, Y.; Miyakawa, O.; Miyamoto, T.; Miyamoto, A.; Miyo, K.; Miyoki, S.; Morii, W.; Morisaki, S.; Moriwaki, Y.; Morozumi, T.; Musha, M.; Nagano, S.; Nagano, K.; Nakamura, K.; Nakamura, T.; Nakano, H.; Nakano, M.; Nakao, K.; Narikawa, T.; Quynh, L. N.; Ni, W. -T.; Ochi, T.; Oh, J.; Oh, S.; Ohashi, M.; Ohishi, N.; Ohkawa, M.; Okutomi, K.; Oohara, K.; Alleano, F. E. P.; Pinto, I.; Sago, N.; Saijo, M.; Saito, Y.; Sakai, K.; Sakai, Y.; Sasaki, Y.; Sasaki, M.; Sato, S.; Sato, T.; Sekiguchi, Y.; Seto, N.; Shibata, M.; Shimoda, T.; Shinkai, H.; Shoda, A.; Somiya, K.; Son, E.; Suemasa, A.; Suzuki, T.; Suzuki, T.; Tagoshi, H.; Takahashi, H.; Takahashi, R.; Takamori, A.; Takeda, H.; Tanaka, H.; Tanaka, K.; Tanaka, T.; Tatsumi, D.; Tomaru, T.; Tomura, T.; Travasso, F.; Tsubono, K.; Tsuchida, S.; Uchikata, N.; Uchiyama, T.; Uehara, T.; Ueki, S.; Ueno, K.; Ushiba, T.; Van Putten, M. H. P. M.; Vocca, H.; Wada, S.; Wakamatsu, T.; Yamada, T.; Yamamoto, S.; Yamamoto, T.; Yamamoto, K.; Yamamoto, A.; Yokoyama, J.; Yokozawa, T.; Yoon, T. H.; Yuzurihara, H.; Zeidler, S.; Zhu, Z. -H.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 1342:1(2020), p. 012014. (Intervento presentato al convegno 15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017 tenutosi a can) [10.1088/1742-6596/1342/1/012014].

The status of KAGRA underground cryogenic gravitational wave telescope

Majorana E.;Suzuki T.;Suzuki T.;
2020

Abstract

KAGRA is a 3-km interferometric gravitational wave telescope located in the Kamioka mine in Japan. It is the first km-class gravitational wave telescope constructed underground to reduce seismic noise, and the first km-class telescope to use cryogenic cooling of test masses to reduce thermal noise. The construction of the infrastructure to house the interferometer in the tunnel, and the initial phase operation of the interferometer with a simple 3-km Michelson configuration have been completed. The first cryogenic operation is expected in 2018, and the observing runs with a full interferometer are expected in 2020s. The basic interferometer configuration and the current status of KAGRA are described.
2020
15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017
Gravitational wave underground cryogenic detectors
04 Pubblicazione in atti di convegno::04h Atto di convegno in rivista scientifica o di classe A
The status of KAGRA underground cryogenic gravitational wave telescope / Akutsu, T.; Ando, M.; Araya, A.; Aritomi, N.; Asada, H.; Aso, Y.; Atsuta, S.; Awai, K.; Barton, M. A.; Cannon, K.; Craig, K.; Creus, W.; Doi, K.; Eda, K.; Enomoto, Y.; Flaminio, R.; Fujii, Y.; Fujimoto, M. -K.; Furuhata, T.; Haino, S.; Hasegawa, K.; Hashino, K.; Hayama, K.; Hirobayashi, S.; Hirose, E.; Hsieh, A. H.; Inoue, Y.; Ioka, K.; Itoh, Y.; Kaji, T.; Kajita, T.; Kakizaki, M.; Kamiizumi, M.; Kambara, S.; Kanda, N.; Kanemura, S.; Kaneyama, M.; Kang, G.; Kasuya, J.; Kataoka, Y.; Kawai, N.; Kawamura, S.; Kim, C.; Kim, H.; Kim, J.; Kim, Y.; Kimura, N.; Kinugawa, T.; Kirii, S.; Kitaoka, Y.; Kojima, Y.; Kokeyama, K.; Komori, K.; Kotake, K.; Kumar, R.; Lee, H.; Lee, H.; Liu, Y.; Luca, N.; Majorana, E.; Mano, S.; Marchio, M.; Matsui, T.; Matsushima, F.; Michimura, Y.; Miyakawa, O.; Miyamoto, T.; Miyamoto, A.; Miyo, K.; Miyoki, S.; Morii, W.; Morisaki, S.; Moriwaki, Y.; Morozumi, T.; Musha, M.; Nagano, S.; Nagano, K.; Nakamura, K.; Nakamura, T.; Nakano, H.; Nakano, M.; Nakao, K.; Narikawa, T.; Quynh, L. N.; Ni, W. -T.; Ochi, T.; Oh, J.; Oh, S.; Ohashi, M.; Ohishi, N.; Ohkawa, M.; Okutomi, K.; Oohara, K.; Alleano, F. E. P.; Pinto, I.; Sago, N.; Saijo, M.; Saito, Y.; Sakai, K.; Sakai, Y.; Sasaki, Y.; Sasaki, M.; Sato, S.; Sato, T.; Sekiguchi, Y.; Seto, N.; Shibata, M.; Shimoda, T.; Shinkai, H.; Shoda, A.; Somiya, K.; Son, E.; Suemasa, A.; Suzuki, T.; Suzuki, T.; Tagoshi, H.; Takahashi, H.; Takahashi, R.; Takamori, A.; Takeda, H.; Tanaka, H.; Tanaka, K.; Tanaka, T.; Tatsumi, D.; Tomaru, T.; Tomura, T.; Travasso, F.; Tsubono, K.; Tsuchida, S.; Uchikata, N.; Uchiyama, T.; Uehara, T.; Ueki, S.; Ueno, K.; Ushiba, T.; Van Putten, M. H. P. M.; Vocca, H.; Wada, S.; Wakamatsu, T.; Yamada, T.; Yamamoto, S.; Yamamoto, T.; Yamamoto, K.; Yamamoto, A.; Yokoyama, J.; Yokozawa, T.; Yoon, T. H.; Yuzurihara, H.; Zeidler, S.; Zhu, Z. -H.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 1342:1(2020), p. 012014. (Intervento presentato al convegno 15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017 tenutosi a can) [10.1088/1742-6596/1342/1/012014].
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