Initial Unknown Lockloss from NLN (Maybe PI related?) :
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1376274187
ScreenShot 1 ScreenShot 2 ScreenShot 3
23-08-17_02:05:06.841133Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SUS_PI: has notification
2023-08-17_02:05:12.031195Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SUS_PI: has notification
2023-08-17_02:05:22.397983Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SUS_PI: has notification
2023-08-17_02:15:15.962160Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SUS_PI: has notification
2023-08-17_02:15:21.158619Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SUS_PI: has notification
2023-08-17_02:22:49.089168Z ISC_LOCK [NOMINAL_LOW_NOISE.run] USERMSG 0: SQZ_MANAGER: has notification
2023-08-17_02:22:49.343171Z ISC_LOCK [NOMINAL_LOW_NOISE.run] Unstalling IMC_LOCK
2023-08-17_02:22:49.571864Z ISC_LOCK JUMP target: LOCKLOSS
2023-08-17_02:22:49.578399Z ISC_LOCK [NOMINAL_LOW_NOISE.exit]
2023-08-17_02:22:49.629938Z ISC_LOCK JUMP: NOMINAL_LOW_NOISE->LOCKLOSS
2023-08-17_02:22:49.629938Z ISC_LOCK calculating path: LOCKLOSS->NOMINAL_LOW_NOISE
2023-08-17_02:22:49.632228Z ISC_LOCK new target: DOWN
2023-08-17_02:22:49.636266Z ISC_LOCK executing state: LOCKLOSS (2)
2023-08-17_02:22:49.647637Z ISC_LOCK [LOCKLOSS.enter]
Followed by a Lockloss at LOWNOISE_LENGHT_CONTROL
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1376277430
2023-08-17_03:16:40.676453Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-OUTPUT_MTRX_2_13 => -1
2023-08-17_03:16:40.676886Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-SRCL1_OFFSET => 0
2023-08-17_03:16:40.677417Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-MICHFF_TRAMP => 10
2023-08-17_03:16:40.677727Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-SRCLFF1_TRAMP => 10
2023-08-17_03:16:40.677943Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] timer['wait'] = 10
2023-08-17_03:16:50.678146Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] timer['wait'] done
2023-08-17_03:16:50.717927Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] ezca: H1:LSC-MICHFF_GAIN => 1
2023-08-17_03:16:50.718315Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] ezca: H1:LSC-SRCLFF1_GAIN => 1
2023-08-17_03:16:50.718524Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] timer['wait'] = 10
2023-08-17_03:16:52.342688Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] Unstalling OMC_LOCK
2023-08-17_03:16:52.344038Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] Unstalling IMC_LOCK
2023-08-17_03:16:52.576674Z ISC_LOCK JUMP target: LOCKLOSS
2023-08-17_03:16:52.576674Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.exit]
2023-08-17_03:16:52.634809Z ISC_LOCK JUMP: LOWNOISE_LENGTH_CONTROL->LOCKLOSS
2023-08-17_03:16:52.634809Z ISC_LOCK calculating path: LOCKLOSS->NOMINAL_LOW_NOISE
2023-08-17_03:16:52.635554Z ISC_LOCK new target: DOWN
2023-08-17_03:16:52.674469Z ISC_LOCK executing state: LOCKLOSS (2)
2023-08-17_03:16:52.674675Z ISC_LOCK [LOCKLOSS.enter]
relocking went through PRMI and took a while, Lost lock at LOWNOISE_LENGTH_CONTROL again at @ 4:14 UTC
2023-08-17_04:13:58.490058Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-OUTPUT_MTRX_2_11 => -1
2023-08-17_04:13:58.490906Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-OUTPUT_MTRX_1_13 => 1
2023-08-17_04:13:58.491239Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-OUTPUT_MTRX_2_13 => -1
2023-08-17_04:13:58.491568Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-SRCL1_OFFSET => 0
2023-08-17_04:13:58.492108Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-MICHFF_TRAMP => 10
2023-08-17_04:13:58.492395Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] ezca: H1:LSC-SRCLFF1_TRAMP => 10
2023-08-17_04:13:58.492619Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.main] timer['wait'] = 10
2023-08-17_04:14:08.492962Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] timer['wait'] done
2023-08-17_04:14:08.528400Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] ezca: H1:LSC-MICHFF_GAIN => 1
2023-08-17_04:14:08.528870Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] ezca: H1:LSC-SRCLFF1_GAIN => 1
2023-08-17_04:14:08.529186Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] timer['wait'] = 10
2023-08-17_04:14:10.595463Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.run] Unstalling IMC_LOCK
2023-08-17_04:14:10.830018Z ISC_LOCK JUMP target: LOCKLOSS
2023-08-17_04:14:10.830018Z ISC_LOCK [LOWNOISE_LENGTH_CONTROL.exit]
2023-08-17_04:14:10.893208Z ISC_LOCK JUMP: LOWNOISE_LENGTH_CONTROL->LOCKLOSS
2023-08-17_04:14:10.893208Z ISC_LOCK calculating path: LOCKLOSS->NOMINAL_LOW_NOISE
2023-08-17_04:14:10.895425Z ISC_LOCK new target: DOWN
2023-08-17_04:14:10.899923Z ISC_LOCK executing state: LOCKLOSS (2)
2023-08-17_04:14:10.900490Z ISC_LOCK [LOCKLOSS.enter]
I have lost lock twice at LOWNOISE_LENGTH_CONTROL tonight. I am concerned that it may be due to alog https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=72262
Which is where there is a change to that state.
The counter argument to this is that I went past this earlier in my first lock of the night. Which was AFTER ISC_LOCK was loaded.
I'm doing an Initial Alignment again tonight to see if it's just poorly aligned instead.
If I still cannot get past LOWNOISE_LENGTH_CONTROL after that I will Revert the changes in the mentioned in the alog above.