High Sensitivity Gravitational Wave Antenna with Parametric Transducer Readout
- 13 March 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (11) , 1908-1911
- https://doi.org/10.1103/physrevlett.74.1908
Abstract
A high- 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 factor and lowest noise temperature ever observed in a full scale antenna, the possibility of further improvements is demonstrated.
Keywords
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