An investigation of eddy-current damping of multi-stage pendulum suspensions for use in interferometric gravitational wave detectors
نویسندگان
چکیده
In this paper we discuss theoretical and experimental investigations of the use of eddy current damping for multi-stage pendulum suspensions such as those intended for use in Advanced LIGO, the proposed upgrade to LIGO (the US laser interferometric gravitational-wave observatory). The design of these suspensions is based on the triple pendulum suspension design developed for GEO 600, the German/UK interferometric gravitational wave detector, currently being commissioned. In that detector all the low frequency resonant modes of the triple pendulums are damped by control systems using co-located sensing and feedback at the highest mass of each pendulum, so that significant attenuation of noise associated with this so-called local
منابع مشابه
Optimization of thermal noise in multi-loop pendulum suspensions for use in interferometric gravitational-wave detectors
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