An arm length stabilization system for KAGRA and future gravitational-wave detectors
學年 108
學期 1
出版（發表）日期 2020-01-13
作品名稱 An arm length stabilization system for KAGRA and future gravitational-wave detectors
作品名稱（其他語言）
著者 KAGRA Collaboration
單位
出版者
著錄名稱、卷期、頁數 Classical and Quantum Gravity 37(3), 035004
摘要 Modern ground-based gravitational wave (GW) detectors require a complex interferometer configuration with multiple coupled optical cavities. Since achieving the resonances of the arm cavities is the most challenging among the lock acquisition processes, the scheme called arm length stabilization (ALS) had been employed for lock acquisition of the arm cavities. We designed a new type of the ALS, which is compatible with the interferometers having long arms like the next generation GW detectors. The features of the new ALS are that the control configuration is simpler than those of previous ones and that it is not necessary to lay optical fibers for the ALS along the kilometer-long arms of the detector. Along with simulations of its noise performance, an experimental test of the new ALS was performed utilizing a single arm cavity of KAGRA. This paper presents the first results of the test where we demonstrated that lock acquisition of the arm cavity was achieved using the new ALS. We also demonstrated that the root mean square of residual noise was measured to be 8.2 Hz in units of frequency, which is smaller than the linewidth of the arm cavity and thus low enough to lock the full interferometer of KAGRA in a repeatable and reliable manner.
關鍵字 gravitational-wave detector;interferometer;multi-colour
語言 en
ISSN 1361-6382
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 GBR
公開徵稿
出版型式 ,電子版,紙本
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