Thermal-noise-limited underground interferometer CLIO

被引：14

作者：

Agatsuma, Kazuhiro ^{[1
]}

Arai, Koji ^{[2
]}

Fujimoto, Masa-Katsu ^{[2
]}

Kawamura, Seiji ^{[2
]}

Kuroda, Kazuaki ^{[1
]}

Miyakawa, Osamu ^{[1
]}

Miyoki, Shinji ^{[1
]}

Ohashi, Masatake ^{[1
]}

Suzuki, Toshikazu ^{[3
]}

Takahashi, Ryutaro ^{[2
]}

Tatsumi, Daisuke ^{[2
]}

Telada, Souichi ^{[4
]}

Uchiyama, Takashi ^{[1
]}

Yamamoto, Kazuhiro ^{[5
,6
]}

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Chiba 2778582, Japan

[2] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[3] High Energy Accelerator Org, Tsukuba, Ibaraki 3050801, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058563, Japan

[5] Leibniz Univ Hannover, Inst Gravitat Phys, D-30167 Hannover, Germany

[6] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany

来源：

CLASSICAL AND QUANTUM GRAVITY | 2010年 / 27卷 / 08期

关键词：

FREQUENCY STABILIZATION; LASER; VIBRATION;

D O I：

10.1088/0264-9381/27/8/084022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：10

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