TITLE: 08/22 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Another busy day of IFO recovery. See Elenna's alog for a summary of the morning's activities.

Since then, H1 lost lock from a ringup of PI mode 24. Naoki, Camilla, and the SUS_PI Guardian all tried to damp it down to no avail; why do we now have a PI that we cannot damp?

After the lockloss, we started back with troubleshooting ALS issues while team SQZ worked on recovering their alignment. TJ and I tried to find an arm alignment that both had the arm power and NSUM counts on ALSY WFS_B high, but we weren't successful. Eventually, Keita was able to help us recenter on both WFS A and B by adjusting the biases for both PZTs on the ISCEY table (found on the secret ALS-Y_WFS Auto Centering medm screen) after we locked the arm in green. These new bias settings ahve been accepted in the ALSEY SAFE.snap SDF table (screenshot attached). It turns out that with the centering being so off on the ALSY WFS, the auto-centering servo was railing, which didn't allow the ALS WFS to engage without us forcing them to. After centering on the WFS, we took the ALS_YARM Guardian to LOCKED_SLOW_WFS_ETM_TMS and the ALSY WFS engaged properly.

The next steps will be to lock the full IFO keeping ALSY locked to set the green camera references.

LOG: