Physics
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cqgra..26m5012g&link_type=abstract
Classical and Quantum Gravity, Volume 26, Issue 13, pp. 135012 (2009).
Physics
5
Scientific paper
The next generation of laser interferometer gravitational wave detectors requires optical cavities with stored power approaching 1 MW. However, such proposed cavities are subject to parametric instability where carrier power resonantly downconverts to drive a large number of test mass acoustic resonances. Damping rings on the test mass circumference have been proposed as a means of suppressing such instabilities, and in previous work, the affect of such a ring on test mass acoustic modes and thermal noise was analysed. The purpose of this paper is to investigate the general issue of parametric instability suppression with damping rings. We determine the optimal position and geometry of damping rings, so as to obtain sufficient instability suppression with the least thermal noise penalty. It is shown that unilateral stability can be attained with a ring damper alone at the expense of a 20% increase in thermal noise, while if just one optical mode is suppressed, there is only a 5% noise penalty.
Blair David Gerald
Gras Slawomir
Zhao Caisheng
No associations
LandOfFree
Suppression of parametric instabilities in future gravitational wave detectors using damping rings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Suppression of parametric instabilities in future gravitational wave detectors using damping rings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suppression of parametric instabilities in future gravitational wave detectors using damping rings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1784209