Thermal-noise-limited underground interferometer CLIO
نویسندگان
چکیده
We report on the current status of CLIO (Cryogenic Laser Interferometer Observatory), which is a prototype interferometer for LCGT (large scale cryogenic gravitational-wave telescope). LCGT is a Japanese next-generation interferometric gravitational-wave detector featuring the use of cryogenic mirrors and a quiet underground site. The main purpose of CLIO is to demonstrate a reduction of the mirror thermal noise by cooling the sapphire mirrors. CLIO is located in an underground site of the Kamioka mine, 1000 m deep from the mountain top, to verify its advantages. After a few years of commissioning work, we have achieved a thermal-noise-limited sensitivity at room temperature. One of the main results of noise hunting was the elimination of thermal noise caused by a conductive coil holder coupled with a pendulum through magnets. PACS numbers: 04.80.Nn, 05.40.Ca, 95.55.Ym, 07.60.Ly (Some figures in this article are in colour only in the electronic version) 0264-9381/10/084022+10$30.00 © 2010 IOP Publishing Ltd Printed in the UK & the USA 1 Class. Quantum Grav. 27 (2010) 084022 K Agatsuma et al
منابع مشابه
ar X iv : 0 80 5 . 23 84 v 1 [ gr - q c ] 1 5 M ay 2 00 8 Current status of the CLIO project
CLIO (Cryogenic Laser Interferometer Observatory) is a Japanese gravitational wave detector project. One of the main purposes of CLIO is to demonstrate thermal-noise suppression by cooling mirrors for a future Japanese project, LCGT (Large-scale Cryogenic Gravitational Telescope). The CLIO site is in Kamioka mine, as is LCGT. The progress of CLIO between 2005 and 2007 (roomand cryogenic-tempera...
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