论文标题
朝着防风ligo：通过在主动地震隔离中使用旋转传感器来降低风驱动地板倾斜的效果
Towards windproofing LIGO: Reducing the effect of wind-driven floor tilt by using rotation sensors in active seismic isolation
论文作者
论文摘要
现代重力波观测器需要强大的低频主动地震隔离，以使干涉仪保持其理想的工作条件。地震仪用于测量地面的运动和孤立的平台。这些设备容易在低于0.1 Hz的频率下从地面倾斜的污染中受到污染，尤其是由风压在建筑墙上引起的。因此，在Ligo的第一个观察过程中，当风速高于7 m/s时，两种观测值都遭受了显着的停机。我们描述了在Ligo Hanford天文台使用地面旋转传感器以校正附近地面地震仪以产生无倾斜的地面翻译信号。这些信号用于传感器校正控制改善了低频地震隔离，并使天文台在风速下运行高达$ 15-20 $ m/s。
Modern gravitational-wave observatories require robust low-frequency active seismic isolation in order to keep the interferometer at its ideal operating conditions. Seismometers are used to measure both the motion of the ground and isolated platform. These devices are susceptible to contamination from ground tilt at frequencies below 0.1 Hz, particularly arising from wind-pressure acting on building walls. Consequently, during LIGO's first observing run both observatories suffered significant downtime when wind-speeds were above 7 m/s. We describe the use of ground rotation sensors at the LIGO Hanford Observatory to correct nearby ground seismometers to produce tilt-free ground translation signals. The use of these signals for sensor correction control improved low-frequency seismic isolation and allowed the observatory to operate under wind speeds as high as $15-20$ m/s.
