Constant force actuator for gravitational wave detector's seismic attenuation systems (SAS)

被引：19

作者：

Wang, CY

Tariq, H

DeSalvo, R

Iida, Y

Marka, S

Nishi, Y

Sannibale, V

Takamori, A

机构：

[1] CALTECH, LIGO Project, Pasadena, CA 91125 USA

[2] Florida Inst Technol, Melbourne, FL 32901 USA

[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 489卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

gravitational wave interferometers; seismic isolation; inertial mode damping; constant force actuators;

D O I：

10.1016/S0168-9002(02)00801-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have designed, tested and implemented a UHV-compatible, low-noise, non-contacting force actuator for DC positioning and inertial damping of the rigid body resonances of the Seismic Attenuation System (SAS) designed for the TAMA Gravitational Wave Interferometer. The actuator fully satisfies the stringent zero-force-gradient requirements that are necessary to prevent re-injecting seismic noise into the SAS chain. The actuator's closed magnetic field design makes for particularly low power requirements, and low susceptibility to external perturbations. The actuator retains enough strength to absorb seismic perturbations even during small earthquakes. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：563 / 569

页数：7

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