论文标题
通过干涉局部阻尼的悬浮光学元件减少重力波检测器中的噪声
Reducing controls noise in gravitational wave detectors with interferometric local damping of suspended optics
论文作者
论文摘要
控制噪声是LIGO重力波检测器低频性能的限制因素。在本文中，我们对使用称为Hoqis的新传感器控制悬架共振的效果进行建模。我们表明我们是否要使用Hoqis，而不是标准的阴影传感器，我们可以抑制共振峰值多达十倍，同时降低阻尼系统注入的噪声。通过一系列效应，这将减少谐振的交叉耦合，从而提高饲料前馈控制的稳定性，并在10-20 Hz带中提高检测器的灵敏度。该分析表明，当前和将来的探测器应使用当地传感器（例如HOQI），以提高低频性能。
Control noise is a limiting factor in the low-frequency performance of the LIGO gravitational wave detectors. In this paper we model the effects of using new sensors called HoQIs to control the suspension resonances. We show if we were to use HoQIs, instead of the standard shadow sensors, we can suppress resonance peaks up to tenfold more while simultaneously reducing the noise injected by the damping system. Through a cascade of effects this will reduce the resonant cross-coupling, allow for improved stability for feed-forward control, and result in improved sensitivity of the detector in the 10-20 Hz band. This analysis shows that local sensors such as HoQIs should be used in current and future detectors to improve low-frequency performance.
