The 10m Prototype facility at the Albert-Einstein-Institute (AEI) in Hanover, Germany, employs three large seismic attenuation systems to reduce mechanical motion. The AEI Seismic-Attenuation-System (AEI-SAS) uses mechanical anti-springs in order to achieve resonance frequencies below 0.5Hz. This system provides passive isolation from ground motion by a factor of about 400 in the horizontal direction at 4Hz and in the vertical direction at 9Hz. The presented isolation performance is measured under vacuum conditions using a combination of commercial and custom-made inertial sensors. Detailed analysis of this performance led to the design and implementation of tuned dampers to mitigate the effect of the unavoidable higher order modes of the system. These dampers reduce RMS motion substantially in the frequency range between 10 and 100Hz in 6 degrees of freedom. The results presented here demonstrate that the AEI-SAS provides substantial passive isolation at all the fundamental mirror-suspension resonances.

翻译：德国汉诺威Albert-Einstein-Institute (AEI) 的10m 原型设施使用三个大型地震减压系统来减少机械运动。AEI地震降压-系统(AEI-SAS)使用机械反弹,以达到0.5Hz以下的共振频率。这个系统在4Hz的横向方向和9Hz的垂直方向上以约400系数使地面运动被被动隔离。显示的孤立性能是在真空条件下使用商业和定制惯性惯性传感器结合测量的。对这一性能的详细分析导致经过调整的防弹犬的设计和实施,以减轻系统不可避免的更高顺序模式的影响。这些防弹犬在6度自由度的10至100Hz的频率范围内大量减少RMS运动。这里介绍的结果表明,AEI-SAS在所有基本的反射-悬浮反射反射反射振荡中都提供了实质性的被动隔离。