J. Kissel

I've taken an over-night (un-driven) ASD of the recently aligned L2/PUM OSEMs on the newly freely suspended H1 SUS ETMY, on the hunt for its new highest Bounce and Roll (a.k.a. the V4 and R4) modes. Attached are the results, which clearly show these modes, and they're well resolved in frequency with high SNR. The following are these frequencies in tabular form:
     
     New Values (Hz)
V4        9.7343
R4       13.8433

We'll use these new frequencies to tune up the Bounce & Roll mode dampers that are to be installed in a bit.