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Reports until 20:24, Thursday 18 December 2014
H1 ISC (SEI, SUS)
jeffrey.kissel@LIGO.ORG - posted 20:24, Thursday 18 December 2014 (15731)
H1 SUS ITMY Highest Bounce Mode (9.7 [Hz]) Rung up, Prevents Interferometry
J. Kissel, P. Fulda, K. Izumi, K. Venkateswara

While trying to get MICH locked again for seismic diagnoses of goodness, Kiwamu found that the H1 SUS ITMY's highest vertical (bounce) mode at 9.7 [Hz] had been rung up. It's the end of the day and no one wants to stick around long enough to really diagnose why it rung up, or attempt to damp it. Our best guess is that the mode got rung up while the SEI team was measuring HEPI tilt-decoupling coefficients (see attached 12 hour trends).

Paul and Mackenzie might keep trying, but will most likely just wait until tomorrow for the mode to ring down naturally.
Images attached to this report
Displaying report 1-1 of 1.