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首页> 外文会议>Nonimaging optics: efficient design for illumination and solar concentration XIII - commemorating the 50th anniversary of nonimaging optics >The Advanced LIGO Detectors in the Era of First Discoveries
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The Advanced LIGO Detectors in the Era of First Discoveries

机译：首次发现时代的高级LIGO探测器

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Following a major upgrade, the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) held their first observation run between September 2015 and January 2016. The product of observable volume and measurement time exceeded that of all previous runs within the first 16 days of coincident observation. On September 14th, 2015 the Advanced LIGO detectors observed the transient gravitational-wave signal GW150914, determined to be the coalescence of two black holes, launching the era of gravitational-wave astronomy. We present the main features of the detectors that enabled this observation. At its core Advanced LIGO is a multi-kilometer long Michelson interferometer employing optical resonators to enhance its sensitivity. Four very pure and homogeneous fused silica optics with excellent figure quality serve as the test masses. The displacement produced by the event GW150914 was one 200th of a proton radius. It was observed with a combined signal-to-noise ratio of 24 in coincidence by the two detectors. At full sensitivity, the Advanced LIGO detectors are designed to deliver another factor of three improvement in the signal-to-noise ratio for binary black hole systems similar in masses to GW150914.
机译：经过重大升级，激光干涉仪引力波天文台（LIGO）的两个先进探测器在2015年9月至2016年1月之间进行了首次观测。可观测体积和测量时间的乘积超过了前16次中所有先前运行的观测结果巧合的日子。 2015年9月14日，先进的LIGO探测器观测到了瞬时引力波信号GW150914，该信号被确定为两个黑洞的结合，从而开启了引力波天文学时代。我们介绍了启用此观察功能的探测器的主要功能。 Advanced LIGO的核心是多公里长的迈克尔逊干涉仪，它采用光学谐振器来增强灵敏度。四个质量极高且均质的熔融石英光学元件均作为测试质量。事件GW150914产生的位移是质子半径的200倍。两个探测器同时观察到的信噪比为24。在全灵敏度下，先进的LIGO探测器旨在为质量类似于GW150914的二元黑洞系统在信噪比方面提高三倍。

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