Parametric transducers, such as superconducting rf cavities, can boost the bandwidth and sensitivity of the next generation resonant antennas, thanks to a readily available technology. We have developed a fully coupled dynamic model of the system "antenna--transducer" and worked out some estimates of signal--to--noise ratio and the stability conditions in various experimental configurations. We also show the design and the prototype of a rf cavity which, together with a suitable read--out electronic, will be used as a test bench for the parametric transducer.
@article{arxiv.gr-qc/0602058,
title = {Superconducting cavity transducer for resonant gravitational radiation antennas},
author = {R. Ballantini and M. Bassan and A. Chincarini and G. Gemme and R. Parodi and R. Vaccarone},
journal= {arXiv preprint arXiv:gr-qc/0602058},
year = {2009}
}
Comments
7 pages, 3 eps figures. Presented at the 6th Amaldi Conference on Gravitational Waves (2005). Accepted for publication in Journal of Physics: Conference Series