Stefan, Lisa

Now that the mirrors move less and the arm cavity locks stably, we want to actually measure the frequency noise between the red and green.

When trying to do the green CARM hand off, we found that we didn't have a signal. 
We tracked it down to a bad alignment between the green beam from the SHG and the one from the arm.
We used Sheila's numbers  as reference: the beat note was supposed to be around 28 mV, it was just a few mV. We realigned the green arm beam on ISCT1, and we brought the beat note back to about 22 mV.