J. Kissel, S. Dwyer, T. O'Hanlon, E. Capote

With the new TST stage drive path for violin mode damping (LHO:63078), we're making attempts to understand the relative actuation strength of our options via driven transfer function, rather than "guess and check" that we've been doing. Sheila tried a swept sine early today and had questionable success -- see LHO:63083. Jenne and I tried using broad band noise, which is posted here.

While L2 P and L3 L have little-to-no coherence anywhere, L2 L and L2 Y drive *do*, at least *around* the resonances. See the two attachments -- the first with all for drives on it, including the incoherent drives, and the second with only those with some appreciable coherence.

We take this to mean:
    - Using the off-resonance regions where the TFs are coherent -- the L2 Y drive is the strongest, and the L drive is weaker by at least ~1 order of magnitude.
    - Because there's no coherence, we assume that L2 P and L3 L drives are even weaker than L2 L.
    - We could wave our hands around all day for reasons as to why the measurement using the strong actuators *aren't* coherent on resonance, so pick your favorite reason.

Indeed, we *have* been driving ITMY MODE 5 and MODE 6 with L2 yaw so that's good.