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Proceedings Paper

Dual detectors of gravitational waves
Author(s): Michele Bignotto; Michele Bonaldi; Massimo Cerdonio; Livia Conti; Giovanni Andrea Prodi; Luca Taffarello; Jean-Pierre Zendri
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Paper Abstract

In a "Dual" gravitational wave (GW) detector a wide band sensitivity is obtained by measuring the differential displacement, driven by the GW, of the facing surfaces of two nested massive bodies mechanically resonating at different frequencies. A "selective readout" scheme, capable of specifically selecting the signal contributed by the vibrational modes sensitive to the gravitational waves, could then reduce the thermal noise contribution from the not sensitive modes. In a dual detector the sensitivity improvement in the displacement transduction could be pursued by means of mechanical amplification systems. This solution is innovative for the resonant GW detectors and we report about preliminary theoretical and experimental study.

Paper Details

Date Published: 29 September 2004
PDF: 8 pages
Proc. SPIE 5500, Gravitational Wave and Particle Astrophysics Detectors, (29 September 2004); doi: 10.1117/12.555657
Show Author Affiliations
Michele Bignotto, INFN (Italy)
Univ. degli Studi di Padova (Italy)
Michele Bonaldi, Istituto di Fotonica e Nanotecnologie, CNR (Italy)
INFN (Italy)
Massimo Cerdonio, INFN (Italy)
Univ. degli Studi di Padova (Italy)
Livia Conti, INFN (Italy)
Univ. degli Studi di Padova (Italy)
Giovanni Andrea Prodi, INFN (Italy)
Univ. degli Studi di Trento (Italy)
Luca Taffarello, INFN (Italy)
Univ. degli Studi di Padova (Italy)
Jean-Pierre Zendri, INFN (Italy)
Univ. degli Studi di Padova (Italy)

Published in SPIE Proceedings Vol. 5500:
Gravitational Wave and Particle Astrophysics Detectors
James Hough; Gary H. Sanders, Editor(s)

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