标题： KAGRA——日本低温引力波探测器的探测器配置 显示英文标题

标题： Detector configuration of KAGRA - the Japanese cryogenic gravitational-wave detector

摘要： 日本第二代引力波探测器KAGRA的建造工作已经开始。 在接下来的6 \sim 7年里，我们将能够观测到来自遥远星系的时空涟漪。 KAGRA配备了最先进的技术。 全长3公里的探测器位于地下以隔离地震运动，核心光学器件被冷却到20开尔文以减少热波动，并使用量子非破坏性测量技术来降低量子噪声。 本文介绍了KAGRA的探测器配置；其设计、策略以及参数的选择。 显示英文摘要

摘要： Construction of the Japanese second-generation gravitational-wave detector KAGRA has been started. In the next 6 \sim 7 years, we will be able to observe the space-time ripple from faraway galaxies. KAGRA is equipped with the latest advanced technologies. The entire 3-km long detector is located in the underground to be isolated from the seismic motion, the core optics are cooled down to 20 K to reduce thermal fluctuations, and quantum non-demolition techniques are used to decrease quantum noise. In this paper, we introduce the detector configuration of KAGRA; its design, strategy, and downselection of parameters.