With Aogaku members,
We measured the vibration of the OMC optical table. See also the previous study [klog29578].
We located the 3-axial ACC on the optical table and the 1-axial ACC (for vertical) on the base plate. (Fig. 1)
Fig. 2 is the amplitude spectral densities for each channel, without injection. The dotted lines are the previous results on May 22. We can see some reductions.
After that, we performed vertical shaker injections for the base plate and evaluated the TFs (Fig. 4, 6, 8).
They look to be improved. Detail comparisons will be provided later.
