Sheila, Naoki
As shown in the attached figure, SQZ ASC ran away and was turned off since the SQZ ASC trigger was below the threshold. We removed squeezing and reset the AS42 offset and push the graceful clear history. After we brought back the squeezing, everything seems working now.
Even with new input matrix, SQZ ASC ran away today. I reset the AS42 offset and pushed the graceful clear history. The SQZ ASC came back, but I am not sure why this happened.
Naoki, Vicky - We added checkers to both SQZ_MANAGER and SQZ_FC guardians, to give notifications if ASC is not on.
SQZ_MANAGER now checks for ASC on if SQZ-ASC_ANG_P/Y_INMON = 0; same for filter cavity asc, which checks if SQZ-FC_ASC_ANG_P/Y_INMON = 0. Earlier today, looks like the ASC_WFS switch was ON but the alignment ran away, so the signal fell below trigger threshold, and AS42 ASC did not engage. Hope these notifications make it easier to catch when ASC isn't on.
These guardian edits for SQZ_MANAGER and SQZ_FC were the only SVN diffs; the changes are now committed to SVN version 25945.