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Electrically resonant transducer for a gravitational wave antenna

 

作者: Livio Narici,  

 

期刊: Journal of Applied Physics  (AIP Available online 1982)
卷期: Volume 53, issue 6  

页码: 3941-3946

 

ISSN:0021-8979

 

年代: 1982

 

DOI:10.1063/1.331280

 

出版商: AIP

 

数据来源: AIP

 

摘要:

One of the leading problems in gravitational wave detection is the construction of an optimized transducer capable of reaching the predicted sensitivity limit set by the amplifier noise. Existing transducers, when used with ultra‐low noise amplifiers, are far from this limit. In this paper, electrical tuning is proposed to improve the match between the mechanical oscillator and the amplifier in the case of an inductively coupled electromechanical transducer. A detailed calculation of the sensitivity of this device is carried out. This calculation shows substantial improvement over the untuned system. The requirement on the tuning is shown to be noncritical. The most severe requirement is the one imposed by the electrical losses in the resonating capacitor.

 

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