camilla.compton@LIGO.ORG - posted 11:56, Friday 15 March 2024 (76423)
Green arms INITIAL_ALIGNMENT strangness
Around 2024/03/15 18:39 UTC Elenna noticed that H1:GRD-ALS_XARM was in INITIAL_ALIGNMENT waiting for the WFs to converge. But the WFS weren't on!
ENABLE_WFS state compleated at 18:34UTC. It stayed in INITIAL_ALIGNMENT (state -16) until unlocked at 18:39:51UTC. Plot attached showing WFS off.
>> guardctrl log -a "2024/03/15 18:30 UTC" -b " 2024/03/15 18:40 UTC" ALS_XARM
2024-03-15_18:34:03.380964Z ALS_XARM EDGE: ENABLE_WFS->INITIAL_ALIGNMENT
...
2024-03-15_18:39:51.263013Z ALS_XARM [INITIAL_ALIGNMENT.run] Waiting for channels to converge: ['H1:ALS-X_CAM_ITM_PIT_ERR_OUT16', 'H1:ALS-X_CAM_ITM_YAW_ERR_OUT16', 'H1:ALS-X_WFS_A_I_PIT_OUT16', 'H1:ALS-X_WFS_A_I_YAW_OUT16', 'H1:ALS-X_WFS_B_I_PIT_OUT16', 'H1:ALS-X_WFS_B_I_YAW_OUT16']
Images attached to this report
