Other
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phrvd..59f2002m&link_type=abstract
Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 59, Issue 6, 15 March 1999, id. 062002
Other
2
Gravitational Wave Detectors And Experiments, Gravitational Radiation Detectors, Mass Spectrometers, And Other Instrumentation And Techniques
Scientific paper
Every gravitational wave detector needs reliable methods for quantitative tests of its performance. We have tested the ALLEGRO gravitational wave antenna with a capacitive transducer which can apply a force to the antenna. A model that incorporates mistuning of the two normal modes of the antenna is needed to properly understand its operation and to explain previous discrepancies in calibration responses. We write the transfer functions for driving point response, signal response, and noise response in terms of a parameter θ which includes all of the mistuning. Using the ``reciprocity method,'' we determine θ and the force-voltage constant of the force generator. Using diagnostic criteria developed from a full multimode description, we are able to identify the location of an additional parasitic resonance and determine its quantitative effect on the results. Experimental results are presented.
Hamilton William O.
Johnson Walter
Mauceli Evan
McHugh Martin P.
Morse Andrew
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