Active damping performance of the KAGRA seismic attenuation system prototype

被引：2

作者：

Fujiii, Yoshinori ^{[1
]}

Sekiguchi, Takanori ^{[2
]}

Takahashi, Ryutaro ^{[3
]}

Aso, Yoichi ^{[3
]}

Barton, Mark ^{[3
]}

Erasmo, Fabian ^{[3
]}

Arellano, Pena ^{[3
]}

Shoda, Ayaka ^{[3
]}

Akutsu, Tomotada ^{[3
]}

Miyakawa, Osamu ^{[2
]}

Kamiizumi, Masahiro ^{[2
]}

Ishizaki, Hideharu ^{[3
]}

Tatsumi, Daisuke ^{[3
]}

Hirata, Naoatsu ^{[3
]}

Hayama, Kazuhiro ^{[4
]}

Okutomi, Koki ^{[3
]}

Miyamoto, Takahiro ^{[2
]}

Ishizuka, Hideki ^{[2
]}

DeSalvo, Riccardo ^{[5
]}

Flaminio, Raffaele ^{[3
]}

机构：

[1] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan

[2] Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan

[3] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[4] Osaka City Univ, Sumiyoshi Ku, Osaka, Osaka 5588585, Japan

[5] Univ Sannio, Corso Garibaldi 107, I-82100 Benevento, Italy

来源：

11TH EDOARDO AMALDI CONFERENCE ON GRAVITATIONAL WAVES (AMALDI 11) | 2016年 / 716卷

关键词：

D O I：

10.1088/1742-6596/716/1/012022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Large-scale Cryogenic Gravitational wave Telescope (formerly LCGT now KAGRA) is presently under construction in Japan. This May we assembled a prototype of the seismic attenuation system (SAS) for the beam splitter and the signal recycling mirrors of KAGRA, which we call Type-B SAS, and evaluated its performance at NAOJ (Mitaka, Toyko). We investigated its frequency response, active damping performance, vibration isolation performance and long-term stability both in and out of vacuum. From the frequency response test and the active damping performance test, we confirmed that the SAS worked as we designed and that all mechanical resonances which could disturb lock acquisition and observation are damped within 1 minute, which is required for KAGRA, by the active controls.

引用

页数：4

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