M. Todd

I ran ISS injections in several bands during commissioning today (1-20 Hz) until about 9:30 PT. I am still struggling to get coherence below about 4 Hz, but the measurements of the transfer functions match relatively well with models of the ISS couplings to different ports in the IFO, except for POP. This could be sideband dominated dynamics, but more thought is needed.

1. Model of ISS coupling to IFO ports with radiation pressure
2. ISS to AS_C measurement
3. ISS to POP measurement (discrepancy with model)
4. ISS to REFL measurement
5. ISS to TRANS measurement