IFO is still LOCKING and not able to since MAINTENANCE ended.
At first, this was thought to be a combination of the microseism and wind speeds, but both have since gone down to since lockable states. We can also easily lock ALS and have gone through initial alignment fully automatically twice. What happens is that the PRMI_ASC alignment holds but is not high enough in counts, hovering around 50 and not improving. Then, when we attempt to lock DRMI, we lose lock every time. Elenna and I are troubleshooting the issue now. Certainly doesn't seem like the environment.
Now unable to make it past FIND_IR since fully auto initial aligment ~7PM. Wind is just picking up and is now over 30mph again. The last 6 locklosses have been from FIND_IR, caused by ALSY slowly becoming unstably and losing lock. I will go into IDLE and attempt locking if wind improves, which forecast says is unlikely before shift end.
ALSY instability was caused by DOF2 P and Y going in opposite directions slowly causing ALS to lose lock at FIND_IR. I turned them off at this point and was able to get past this state after 7 locklosses.
In other news, Elenna and I do not think this issue is environmental because we were able to hold PRMI lock for over 10 minutes but were not able to improve its counts past 60 with movements in all the relevant suspensions. DRMI is thus still failing to lock (and this is fresh after another initial alignment). The current hypothesis is that something is wrong with ASC.
The alignment on the AS AIR camera looks very poor in PRMI, and the buildups are lower than I expect (around 60 on the fast channel). We tried moving the beamsplitter, PRM, and PR2 and nothing seems to improve the buildup or the shape of the beam on the camera. I even tried stepping PR3 in all directions (I reverted my steps!) and nothing got better. DRMI locking isn't working, we see plently of flashes but no triggers. My guess is the alignment is still poor that we are not meeting the threshhold. However, we've done multiple initial alignments and even adjusted the alignment by hand with no luck. I am stumped about what the problem could be.