High Sensitivity Gravitational Wave Antenna with Parametric Transducer Readout

Details High Sensitivity Gravitational Wave Antenna with Parametric Transducer Readout High Sensitivity Gravitational Wave Antenna with Parametric Transducer Readout

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvl..74.1908b&link_type=abstract

Physical Review Letters, Volume 74, Issue 11, March 13, 1995, pp.1908-1911

Physics

89

Scientific paper

A high- Q niobium resonant mass gravitational radiation antenna with a superconducting parametric transducer and noncontacting readout is shown to achieve a noise temperature of about 2 mK using a zero order predictor filter. The predicted intrinsic cold damping of a parametric transducer is confirmed, along with predicted backaction limits on the sensitivity. While the antenna has the highest intrinsic Q factor and lowest noise temperature ever observed in a full scale antenna, the possibility of further improvements is demonstrated.

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