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CLIO is the Cryogenic Laser Interferometer Observatory, a prototype detector for gravitational waves. It is testing cryogenic mirror technologies for the future Large Cryogenic Gravity Telescope (LCGT). It is an optical interferometer with two perpendicular arms 100 m long. Uniquely, the mirrors are cooled to 20 K. This reduces various thermal noise sources which trouble other gravity observatories, but cooling the mirrors (which is heated by the powerful laser used in the interferometer) while keeping them isolated from vibrations is difficult.〔 〕 CLIO is situated 1000 m underground in the Kamioka mine, Gifu Prefecture, Japan.〔 〕 CLIO is one of the science facilities for physics of the Institute for Cosmic Ray Research of the University of Tokyo. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CLIO」の詳細全文を読む スポンサード リンク
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