Sheila, Kiwamu, Stefan
For the green team: The green beam needs to be realigned on ISCT1 because we had to move PR3.
We noticed that the maximum green arm transmitted light had dropped significantly (from 830 cts to about 500 cts) over the past day.
Also when we locked the PRMI on sidebands, we noticed that the POP18 buildup had dropped from 24000cts tp 4000cts. Looking at the in-vac POP QPDs we found that the actual build-up didn't drop significantly. Thus we suspected clipping, and indeed the green beam was on the edge of the first iris on the table. We moved PR3 to (P:-237.328, Y:-257.276) to center the beam on the iris. Indeed, when we locked up PRMI again we were back at 24000cts.
The old slider values were (P:-240.328, Y:-252.276), so we moved 3urad in pit, and 5urad in yaw.