Recent progress on the R&D program of the seismic attenuation system (SAS) proposed for the advanced gravitational wave detector, LIGO II
Recent progress on the R&D program of the seismic attenuation system (SAS) proposed for the advanced gravitational wave detector, LIGO II
复制标题
R 的最新进展
DOI：
10.1016/s0168-9002(00)01229-8
复制
发表时间：
2001
影响因子：
1.4
通讯作者：
N. Viboud
中科院分区：
文献类型：
--
作者：
A. Bertolini;G. Cella;W. Chenyang;R. Salvo;J. Kovalik;S. Márka;V. Sannibale;A. Takamori;H. Tariq;N. Viboud
引力波干涉仪中的高性能隔震系统不仅需要提高探测器的灵敏度，还要保证探测器的长期稳定运行。 SAS本质上是一个系统，它通过使用无源机械滤波器产生所需的带内地震隔离，并使用惯性阻尼主动减少带外地震噪声。通过倒立摆和单线摆链（其质量为几何抗弹簧过滤器 (GASF)）实现了所有 6 个自由度的被动隔离。主动控制主要用于降低 4Hz 以下的噪音，并抑制倒立摆台作用的链条共振。在此，我们简要概述 SAS 以及全尺寸 SAS 原型所取得的最新成果。
High-performance Seismic Isolation Systems in gravitational wave interferometers are needed not only to increase the sensitivity of the detectors but also to guarantee long periods of stable operation. SAS is essentially a system which produces the required in-band seismic isolation by use of passive mechanical filters and actively reduces the out of band seismic noise using inertial damping. The passive isolation is achieved for all the 6 degrees of freedom, with an Inverted Pendulum and a chain of single wire pendula whose masses are the Geometrical Anti-Spring Filters (GASF). The active control is applied to reduce mainly the noise below 4Hz and to damp the resonances of the chain acting from the inverted pendulum table. Here we present a brief overview of SAS and recent results achieved from the full scale SAS prototype.