All of the IR alignment equipment was in use somewhere so I was unable to check alignment on the CO2 tables. Because of this the AOMs were left on the table so their absence wouldn't disrupt the beam path. Hopefully when the spares that are from the eLIGO days are repaired and upgraded, they can be used to replace the AOMs currently on the tables. The drivers have been removed and will be going to IntraAction with the AOMs. CO2X had switched channels on the flipper sensors, which would show the incorrect mask as being in place on the MEDM and guardian screen, and weird conditions to happen when trying to flip the masks. This could also lead to bad conditions like having both masks in the beam path.

There is also a guardian script in progress for requesting the different mask states and checking to see if the requested state is the actual state. There is still some work needed to make sure it faults to a reasonable state, and that it handles restarts in a way that makes sense to an operator. While working on this TJ and I noticed a weird glitch that can happen while flipping the central mask, the annulus sensor would switch states briefly even when not requested. I suspect that maybe the annulus sensor sees the central mask briefly while it is flipping. This currently doesn't have an impact on the control scripts, but could probably be fixed with more careful positioning of the sensors.

The beam dumps have been left on both CO2X and Y just before the periscope, so those should be removed unless a placebo test of TCS is desired.