The design of a new preisolator stage for the VIRGO superattenuator is presented. The device is essentially a 6 m high inverted pendulum with horizontal resonant frequency of 30 mHz. An isolation of 65 dB at 1 Hz has been achieved. Very low forces are needed to move the whole superattenuator acting on the inverted pendulum. For this reason, the system is a suitable platform for the active control of the mirror suspension. (C) 1999 American Institute of Physics. [S0034-6748(99)00805-9].
An inverted pendulum preisolator stage for the VIRGO suspension system
Passaquieti R;FIDECARO, FRANCESCO;POGGIANI, ROSA;
1999-01-01
Abstract
The design of a new preisolator stage for the VIRGO superattenuator is presented. The device is essentially a 6 m high inverted pendulum with horizontal resonant frequency of 30 mHz. An isolation of 65 dB at 1 Hz has been achieved. Very low forces are needed to move the whole superattenuator acting on the inverted pendulum. For this reason, the system is a suitable platform for the active control of the mirror suspension. (C) 1999 American Institute of Physics. [S0034-6748(99)00805-9].File in questo prodotto:
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