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Damping parametric instabilities in future gravitational wave detectors by means of electrostatic actuators

Miller, John and Evans, Matthew and Barsotti, Lisa and Fritschel, Peter and MacInnis, Myron and Mittleman, Richard and Shapiro, Brett and Soto, Jonathan and Torrie, Calum (2011) Damping parametric instabilities in future gravitational wave detectors by means of electrostatic actuators. Physics Letters A, 375 (3). pp. 788-794. ISSN 0375-9601.

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It has been suggested that the next generation of interferometric gravitational wave detectors may observe spontaneously excited parametric oscillatory instabilities. We present a method of actively suppressing any such instability through application of electrostatic forces to the interferometers' test masses. Using numerical methods we quantify the actuation force required to damp candidate instabilities and find that such forces are readily achievable. Our predictions are subsequently verified experimentally using prototype Advanced LIGO hardware, conclusively demonstrating the effectiveness of our approach.

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Additional Information:© 2010 Elsevier B.V. Received 16 November 2010; revised 10 December 2010; accepted 10 December 2010. Communicated by V.M. Agranovich. Available online 16 December 2010. The authors would like to thank Kenneth Strain, Norna Robertson, James Hough and Rainer Weiss for their valuable input to this project. JM’s work at The Massachusetts Institute of Technology was carried out under the auspices of the LIGO Visitors Program and supported by the Carnegie Trust for the Universities of Scotland. LIGO was constructed by the California Institute of Technology and the Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement PHY-0757058. This Letter has LIGO Document Number LIGO-P1000122.
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Universities of Scotland Carnegie TrustUNSPECIFIED
Subject Keywords:Parametric instability; Gravitational wave; Interferometer; Electrostatic drive
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LIGO Document NumberLIGO-P1000122
Issue or Number:3
Record Number:CaltechAUTHORS:20110310-092555568
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Official Citation:John Miller, Matthew Evans, Lisa Barsotti, Peter Fritschel, Myron MacInnis, Richard Mittleman, Brett Shapiro, Jonathan Soto, Calum Torrie, Damping parametric instabilities in future gravitational wave detectors by means of electrostatic actuators, Physics Letters A, Volume 375, Issue 3, 17 January 2011, Pages 788-794, ISSN 0375-9601, DOI: 10.1016/j.physleta.2010.12.032. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22793
Deposited By: Benjamin Perez
Deposited On:10 Mar 2011 18:01
Last Modified:03 Oct 2019 02:40

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