Mirror suspension system for the TAMA SAS
Mirror suspension system for the TAMA SAS
复制标题
TAMA SAS 的后视镜悬挂系统
DOI：
10.1088/0264-9381/19/7/352
复制
发表时间：
2002
影响因子：
3.5
通讯作者：
Chenyang Wang
中科院分区：
文献类型：
--
作者：
A. Takamori;M. Ando;A. Bertolini;G. Cella;R. DeSalvo;M. Fukushima;Y. Iida;Florian Jacquier;S. Kawamura;S. Márka;Y. Nishi;K. Numata;V. Sannibale;K. Somiya;R. Takahashi;Hareem Tariq;K. Tsubono;J. Ugas;N. Viboud;Hiroaki Yamamoto;T. Yoda;Chenyang Wang
目前正在进行几个研发方案，以开发下一代干涉引力波探测器，提供精密天文观测所需的上级灵敏度。为了在低频率下获得宽的观测频带，需要将光学器件与地震噪声隔离。TAMA SAS（地震衰减系统）是由TAMA、LIGO和一些欧洲机构合作开发的，主要目标是实现足够的低频地震衰减（10 Hz时为-180 dB）。该系统从10 Hz以上的极低频率开始将地震噪声抑制到远低于其他噪声水平。它还包括一个主动惯性阻尼系统，以减少光学系统的残余运动，足以允许干涉仪的稳定操作。TAMA SAS还包括一个复杂的反射镜悬挂子系统（SUS）。SUS为光学和振动隔离提供支持，以补充SAS的性能。SUS配备了一个完全被动的磁阻尼器，以抑制内部共振，而不会降低热噪声性能。在本文中，我们讨论了SUS的细节和目前的原型结果。
Several R&D programmes are ongoing to develop the next generation of interferometric gravitational wave detectors providing the superior sensitivity desired for refined astronomical observations. In order to obtain a wide observation band at low frequencies, the optics need to be isolated from the seismic noise. The TAMA SAS (seismic attenuation system) has been developed within an international collaboration between TAMA, LIGO, and some European institutes, with the main objective of achieving sufficient low-frequency seismic attenuation (−180 dB at 10 HZ). The system suppresses seismic noise well below the other noise levels starting at very low frequencies above 10 Hz. It also includes an active inertial damping system to decrease the residual motion of the optics enough to allow a stable operation of the interferometer. The TAMA SAS also comprises a sophisticated mirror suspension subsystem (SUS). The SUS provides support for the optics and vibration isolation complementing the SAS performance. The SUS is equipped with a totally passive magnetic damper to suppress internal resonances without degrading the thermal noise performance. In this paper we discuss the SUS details and present prototype results.