First test of a BAE transducing scheme on a Resonant Gravitational-Wave Antenna

Bonifazi, P. and Vaselli, S. and Visco, M. (1997) First test of a BAE transducing scheme on a Resonant Gravitational-Wave Antenna. Il nuovo cimento C, 20 C (5). pp. 643-650. ISSN 1826-9885

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We present the results obtained with a resonant capacitive transducer, suitable for Back Action Evasion (BAE) measurements, coupled for the first time to a gravitational-wave antenna. This scheme was developed in collaboration with the Group of the University of Rome La Sapienza. The antenna is a 270 kg aluminum 5056 alloy cylinder, with a resonant frequency of 1805 Hz, operating at 4.2K in the ALTAIR cryostat, located in Frascati (Italy) at the IFSI-CNR laboratory. The apparatus was able to work continuously for periods as long as days, both in up-conversion and BAE configurations, with good stability. The behaviour of the system is in reasonable Agreement with a proposed model of a double harmonic oscillator in a BAE readout scheme. The limits on the sensitivity of this set-up are discussed as well as the possible future improvements.

Item Type: Article
Additional Information: Paper presented at the VII Cosmic Physics National Conference, Rimini, October 26-28, 1994.
Uncontrolled Keywords: Experimental studies of gravity; astronomical observations; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse > 526 Geografia matematica > 526.6 Astronomia geodetica e posizioni geografiche
500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 08 Feb 2018 09:19
Last Modified: 08 Feb 2018 09:19

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