Parametric Transducer for Gravitational Radiation Detector
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概要
- 論文の詳細を見る
A low-noise parametric vibration transducer using a pair of superconducting microwave cavities has been developed for use with cryogenic gravitational radiation antennas. Pumped by a 9.7-GHz SCSO, the cavities convert mechanical vibration into microwave sidebands which, after demodulation, reproduce the low-frequency signal. For the performance test of the transducer system, the cavities were mounted on a 15-kHz prototype disk antenna at 4.2 K. A transducer noise temperature of 23 mK was obtained at the antenna frequency, and hence a quantum noise number of 3.4×10^4.
- 社団法人応用物理学会の論文
- 1986-04-20
著者
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Ohashi M
Tohoku Univ. Sendai Jpn
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Tsubono K
Department Of Physics University Of Tokyo
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Tsubono Kimio
Department Of Physics The University Of Tokyo
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HIRAKAWA Hiromasa
Department of Physics, The University of Tokyo
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OHASHI Masatake
Department of Physics, The University of Tokyo
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Hirakawa Hiromasa
Hitachi Works, Hitachi, Ltd.
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Hirakawa H
Hitachi Works Hitachi Ltd.
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Hirakawa Hiromasa
Department Of Physics Faculty Of Science University Of Tokyo
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