Overview of KAGRA: Data transfer and management
學年 112
學期 1
出版（發表）日期 2023-09-02
作品名稱 Overview of KAGRA: Data transfer and management
作品名稱（其他語言）
著者 Liou, Guo-chin
單位
出版者
著錄名稱、卷期、頁數 Progress of Theoretical and Experimental Physics 10,　10A102
摘要 KAGRA is a newly built gravitational wave observatory, a laser interferometer with a 3 km arm length, located in Kamioka, Gifu prefecture, Japan. In this article, we describe the KAGRA data management system, i.e., recording of data, transfer from the KAGRA experiment site to computing resources, as well as data distribution to tier sites, including international sites in Taiwan and Korea. The amount of KAGRA data exceeded 1.0 PiB and increased by about 1.5 TB per day during operation in 2020. Our system has succeeded in data management, and has achieved performance that can withstand observations after 2023, that is, a transfer rate of 20 MB s-1 or more and file storage of sufficient capacity for petabyte class. We also discuss the sharing of data between the global gravitational-wave detector network with other experiments, namely LIGO and Virgo. The latency, which consists of calculation of calibrated strain data and transfer time within the global network, is very important from the view of multi-messenger astronomy using gravitational waves. Real-time calbrated data delivered from the KAGRA detector site and other detectors to our computing system arrive with about 4–15 seconds of latency. These latencies are sufficiently short compared to the time taken for gravitational wave event search computations. We also established a high-latency exchange of offline calibrated data that was aggregated with a better accuracy compared with real-time data.
關鍵字 F3 Gravitational wave;F30 Instrumentation and technique;F32 Calibration and operation of gravitational wave detector;F33 Network system;coincident signal in other radiation bands
語言 en
ISSN 2050-3911
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 JPN
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/125853 )