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C3 - Resonant bar and microwave gravitational wave experiments

Published online by Cambridge University Press:  05 March 2012

William O. Hamilton
Affiliation:
Louisiana State University
Neil Ashby
Affiliation:
University of Colorado, Boulder
David F. Bartlett
Affiliation:
University of Colorado, Boulder
Walter Wyss
Affiliation:
University of Colorado, Boulder
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Summary

In the 20 years after Weber's first publications there have been yearly announcements of new, better ways to detect the signals that everyone knows must be there. Drever, Billing, Douglass and Tyson, Garwin and Levine all built detectors that were of better sensitivity than that estimated by Weber in his original papers. None of those experiments were able to verify Weber's results. In almost every meeting of the past 20 years there have been the promises of the potential of the “second generation” detectors: cryogenic detectors using superconducting instrumentation that would be so sensitive that they would be able to see signals from as far away as the Virgo cluster. In many such meetings for the last 10 years these reports of the potential sensitivity have been tempered by descriptions of the experimental difficulties that were temporarily delaying the attainment of that sensitivity.

The exciting thing about this meeting was that–while there were still tales of wonders to come and of the experimental difficulties that some detectors were confronting–we also had reports of coordinated runs between groups looking for coincidental excitation of their antennas. We had informal meetings outside of the workshops to coordinate data taking and exchange of data. In short, this workshop was the first meeting where three or more groups were confident enough about their detectors that they could talk of coordinating their experiments and of coordinating their existing experiments with the upcoming third generation resonant bar detectors.

Type
Chapter
Information
General Relativity and Gravitation, 1989
Proceedings of the 12th International Conference on General Relativity and Gravitation
, pp. 349 - 356
Publisher: Cambridge University Press
Print publication year: 1990

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