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TAMA 300

Astronomical observatories in JapanAstronomical observatory stubsGravitational-wave telescopesInterferometersUniversity of Tokyo
TAMA300 laser beam duct tunnel
TAMA300 laser beam duct tunnel

TAMA 300 is a gravitational wave detector located at the Mitaka campus of the National Astronomical Observatory of Japan. It is a project of the gravitational wave studies group at the Institute for Cosmic Ray Research (ICRR) of the University of Tokyo. The ICRR was established in 1976 for cosmic ray studies, and is currently developing the Kamioka Gravitational Wave Detector (KAGRA). TAMA 300 was preceded in Mitaka by a 20m prototype TAMA 20 in years 1991-1994. Later the prototype was moved underground to Kamioka mine and renamed LISM. It operated 2000-2002 and established seismic quietness of the underground location. Construction of the TAMA project started in 1995. Data were collected from 1999 to 2004. It adopted a Fabry–Pérot Michelson interferometer (FPMI) with power recycling. It is officially known as the 300m Laser Interferometer Gravitational Wave Antenna due to having 300 meter long (optical) arms. The goal of the project was to develop advanced techniques needed for a future kilometer sized interferometer and to detect gravitational waves that may occur by chance within the Local Group. Observation of TAMA has been terminated, and work moved to the 100 m Cryogenic Laser Interferometer Observatory (CLIO) prototype in Kamioka mine. As of 2020, modified TAMA 300 is used as a testbed to develop new technologies.

Excerpt from the Wikipedia article TAMA 300 (License: CC BY-SA 3.0, Authors, Images).

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Latitude Longitude
N 35.67661 ° E 139.53617 °
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重力波実験棟

天文台通り
181-0015 Mitaka
Japan
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Website
tamago.mtk.nao.ac.jp

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TAMA300 laser beam duct tunnel
TAMA300 laser beam duct tunnel
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International Christian University
International Christian University

International Christian University (国際基督教大学, Kokusai Kirisutokyō Daigaku, ICU) is a non-denominational private university located in Mitaka, Tokyo, Japan, commonly known as ICU. With the efforts of Prince Takamatsu, General Douglas MacArthur, and BOJ President Hisato Ichimada, ICU was established in 1949 as the first liberal arts college in Japan. Currently the university offers 31 undergraduate majors and a graduate school. The Ministry of Education, Culture, Sports, Science and Technology selected ICU as one of the 37 schools for The Top Global University Project in 2014. ICU is unique for being a fully bilingual campus, the classes are held in either English or Japanese, with all faculty required to have strong command in both languages. The university named by Forbes as a top 10 liberal arts college in Asia and ranks as the best Japanese private university by 2020 Times Higher Education Japan University Rankings. Its notable alumni include Princess Mako of Akishino, Princess Kako of Akishino, President and CEO of Sony, Kaz Hirai, and U.S. Senator, Jay Rockefeller. ICU is a member of the Alliance of Asian Liberal Arts Universities and it has several partner institutions worldwide such as The University of California system, University of Pennsylvania, Duke University, Georgetown University, Yonsei University, University College London, London School of Economics and Political Science, University of British Columbia and more.