Today, during commissioning time and between 12:30 and 3:40 PM, I did the following.

1) Impulse injections at EX - this was to investigate whether the coupling at EX will be greatly reduced by damping the cryobaffle or if there is a secondary coupling site.

2) Increasing the 9.8 ITM bounce mode amplitudes by injecting into M0 Test V for the ITMs - this was to make sure that they were not responsible for the ~10 Hz harmonics that we sometimes see in the 20-100 Hz band.

3) Injecting in the LVEA to try and find the mystery vibration coupling (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=72778).

It was clear that I did not produce noise in the 20-100 Hz band with my ITM bounce mode injections, but I havent yet analyzed the data from the other two tests.