Hostname: page-component-7c8c6479df-ws8qp Total loading time: 0 Render date: 2024-03-29T12:15:38.621Z Has data issue: false hasContentIssue false

Optimization of Gravitational Burst Detectors Using Piezoelectric Transducers

Published online by Cambridge University Press:  07 February 2017

D. Maeder*
Affiliation:
Département de Physique Nucléaire et Corpusculaire, Université de Genève, CH-1211 Genève 4, Switzerland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A general approach to overall system optimization is developed using the concepts of mechanical and electrical signal-to-noise ratios (MSNR and ESNR). These are proportional to and to respectively, where Qsys=mechanical Q of the complete detector, μ = (transducer mass/metal mass), and n = resolving time in units of one-half of the detector fundamental period. The overall SNR becomes a maximum for n = n = optimum resolving time; this procedure yields whereas

Application to ‘strong-coupling’ type antennae (such as divided-cylinder systems) gives a high SNR which depends very little on μ if μ > 0.01. Q-factor and coupling efficiency relations were checked for 22 kg-prototypes using μ = 0.26%, 0.9%, and 1.8%. Two new detector configurations are suggested: the ‘bridged-tube’ allows strong-coupling for very long detectors; the ‘folded-tube’ operates at lower frequencies for a given length.

Type
Part I: Gravitational Radiation
Copyright
Copyright © Reidel 1974 

References

Maeder, D. G.: 1973, ‘Matching Conditions in the Design of Gravitational Detector Systems’, to be published in Compte-rendus du Colloque International C.N.R.S. No. 220, Ondes et radiations gravitationnelles, Paris.Google Scholar