First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
學年 107
學期 2
出版（發表）日期 2019-07-23
作品名稱 First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
作品名稱（其他語言）
著者 T Akutsu; M Ando; K Arai; Y Arai; S Araki; A Araya; N Aritomi; H Asada et al. (including G-C Liu)
單位
出版者
著錄名稱、卷期、頁數 Classical and Quantum Gravity 36(16), 165008
摘要 KAGRA is a second-generation interferometric gravitational-wave detector with 3 km arms constructed at Kamioka, Gifu, Japan. It is now in its final installation phase, which we call bKAGRA (baseline KAGRA), with scientific observations expected to begin in late 2019. One of the advantages of KAGRA is its underground location of at least 200 m below the ground surface, which reduces seismic motion at low frequencies and increases the stability of the detector. Another advantage is that it cools down the sapphire test mass mirrors to cryogenic temperatures to reduce thermal noise. In April–May 2018, we operated a 3 km Michelson interferometer with a cryogenic test mass for 10 d, which was the first time that km-scale interferometer was operated at cryogenic temperatures. In this article, we report the results of this ‘bKAGRA Phase 1’ operation. We have demonstrated the feasibility of 3 km interferometer alignment and control with cryogenic mirrors.
關鍵字 gravitational radiation detector: interferometer;detector: stability;frequency: low;noise: thermal;cryogenics;KAGRA;temperature;mirror;gravitational radiation;observatory;alignment;surface
語言 en
ISSN 0264-9381
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 JPN
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117356 )