I took over the measurement time from Jenne and took the coherence measurements between DARM and Bullseye signals / IMC WFS RF/DC signals just to confirm the situation of the jitter coupling.

Attachment 1 shows the coherence measurement between DARM and the bulleye signals. They show broadband (30~900Hz) coherence as high as 0.5.

Attachment 2 shows the coherence between DARM and the IMC WFS RF signals. They shows high coherence but they look like mechanical peaks. The IMC WFS DC signals (Attachment 3) also shows qualitatively similar features.