论文标题
在第三次观察中,高级LIGO探测器的灵敏度和性能
Sensitivity and Performance of the Advanced LIGO Detectors in the Third Observing Run
论文作者
论文摘要
2019年4月1日,高级激光干涉仪引力波观测站(Aligo)与高级处女座检测器一起开始了第三次观察跑步,这是为期一年的专用搜索引力辐射。 Ligo探测器比以往任何时候都达到了更高的占空比和对重力波的敏感性,Ligo Hanford实现了对二进制中子星凝胶的敏感性,达到111 MPC的距离,Ligo Livingston的距离为134 MPC,其占名为74.6%和77.6%和77.0.0%。灵敏度和稳定性的提高是对探测器进行多次升级的结果,包括腔内功率的两倍,添加空中光学参数参数振荡器,用于挤压光注射,更换核心光学和最终反应质量,以及安装声学模式减震器。本文探讨了这些升级背后的目的,并据我们所知,目前限制了每个检测器的灵敏度。
On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.