标题： ETpathfinder：用于干涉引力波探测器的低温试验台 显示英文标题

标题： ETpathfinder: a cryogenic testbed for interferometric gravitational-wave detectors

摘要： 第三代引力波观测设施，如爱因斯坦望远镜（ET）和宇宙探索者（CE），旨在相比当前的先进探测器，在宽频率范围内灵敏度提高至少十倍。为了指导第三代探测器的设计并开发和验证其子系统，需要专门的测试设施。ETpathfinder原型使用完整的干涉仪配置，旨在在与ET相似的环境中提供高灵敏度设施。除了1550 nm的干涉测量和硅测试质量外，ETpathfinder还将专注于低温技术、2090 nm的激光和光学以及先进的量子噪声减少方案。本文分析了支撑噪声贡献，并将它们结合成两种最初目标配置的完整噪声预算：1）使用1550 nm激光并在18 K温度下运行；2）在2090 nm波长和123 K温度下运行。 显示英文摘要

摘要： The third-generation of gravitational wave observatories, such as the Einstein Telescope (ET) and Cosmic Explorer (CE), aim for an improvement in sensitivity of at least a factor of ten over a wide frequency range compared to the current advanced detectors. In order to inform the design of the third-generation detectors and to develop and qualify their subsystems, dedicated test facilities are required. ETpathfinder prototype uses full interferometer configurations and aims to provide a high sensitivity facility in a similar environment as ET. Along with the interferometry at 1550 nm and silicon test masses, ETpathfinder will focus on cryogenic technologies, lasers and optics at 2090 nm and advanced quantum-noise reduction schemes. This paper analyses the underpinning noise contributions and combines them into full noise budgets of the two initially targeted configurations: 1) operating with 1550 nm laser light and at a temperature of 18 K and 2) operating at 2090 nm wavelength and a temperature of 123 K.