Thermal noise resulting from ring dampers used for suppression of parametric instabilities. Antonella Iuorio University of Sannio, Benevento, Italy LIGO Seminar September 12, 2006. Eric D. Black Grad students: Akira Villar, Greg Ogin
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University of Sannio, Benevento, Italy
September 12, 2006
Eric D. Black
Grad students: Akira Villar, Greg Ogin
Surf student: Matt Seaberg, Cacey Stevens, Michael Goldman
Stokes mode contribution
Anti-Stokes mode contributionInstability Condition
Ju, et al. G050325-00 who got it from
Braginsky, et al. Phys. Lett. A 305, 111 (2002)
How do we eliminate parametric oscillations in AdLIGO without spoiling our low thermal noise floor?
IDEA:To suppress the mechanical Q’s of many modes, without sensibly affecting thermal noise floor
No ring damper
Problem: Need to eliminate screw.
IDEA: Heat rings and cool in place