jenne.driggers@LIGO.ORG - posted 10:04, Friday 11 August 2023 - last comment - 10:51, Friday 11 August 2023(72152)
Locking is better with higher SR2, SR3 damping gains
After the locking struggles this morning (alogs 72145 and 72149), Gabriele suggested reverting the SR2 and SR3 damping gains back to a higher value. RyanS did that by hand, and the IFO got all the way to NLN the next lock with no further assistance (I believe).
While the IFO was relocking, I added a few lines to the end of LOWNOISE_ASC to set the SR2 and SR3 damping gains to their lower values from alog 72130.
TJ and RyanS are working right now on a way to ensure that we have the higher gain values for lock acquisition and initial alignment, but also the lower gains accepted in the Observe.snap file (as of early this morning, the safe.snap and observe.snap files are still linked).
The safe and observe files for SR2 and SR3 are now unlinked. The higher gain values are saved in the safe.snaps and the lower gains have been accepted in the observe.snaps.