We have implemented a novel scheme of signal readout for resonant gravitational wave detectors. For the first time, a capacitive resonant transducer has been matched to the signal amplifier by means of a tuned high Q electrical resonator. The resulting 3-mode detection scheme widens significantly the bandwidth of the detector. We present here the results achieved by this signal readout equipped with a two-stage SQUID amplifier. Once installed on the AURIGA detector, the one-sided spectral sensitivity obtained with the detector operated at 4.5 K is better than 10-20 ^Hz1/2 over 110 Hz, and in good agreement with the expectations.

3-mode detection for widening the bandwidth of resonant gravitational wave detectors

Liguori, Nicola;Mezzena, Renato;Poggi, Silvia;Prodi, Giovanni Andrea;Salemi, Francesco;Vinante, Andrea;Vitale, Stefano;
2005-01-01

Abstract

We have implemented a novel scheme of signal readout for resonant gravitational wave detectors. For the first time, a capacitive resonant transducer has been matched to the signal amplifier by means of a tuned high Q electrical resonator. The resulting 3-mode detection scheme widens significantly the bandwidth of the detector. We present here the results achieved by this signal readout equipped with a two-stage SQUID amplifier. Once installed on the AURIGA detector, the one-sided spectral sensitivity obtained with the detector operated at 4.5 K is better than 10-20 ^Hz1/2 over 110 Hz, and in good agreement with the expectations.
2005
no. 24
L., Baggio; M., Bignotto; M., Bonaldi; M., Cerdonio; L., Conti; P., Falferi; Liguori, Nicola; A., Marin; Mezzena, Renato; A., Ortolan; Poggi, Silvia; Prodi, Giovanni Andrea; Salemi, Francesco; G., Soranzo; L., Taffarello; G., Vedovato; Vinante, Andrea; Vitale, Stefano; J. P., Zendri
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/58041
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