TITLE: 11/07 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 8mph Gusts, 5mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.77 μm/s 
QUICK SUMMARY:

H1 had a bit of a day.  What's new today from TJ---is that H1 is having trouble locking DRMI.

Microseism definitely continues to be the main culprit environmentally with (0.1-0.3 and 0.3-1.0Hz bands both being high and even increasing over the last 6-8hrs).  Winds are now low and it is raining out.

Plan for the EVE shift is to continue with locking.

Plan for OWL shift (if locking woes continue), is to NOT set OWL shift alerts for the night, take ISC_LOCK to IDLE, and then I just touched base with RyanC about having him assess H1 locking about 4hrs after the EVE shift (~around 2AM).  If locking looks better, continue locking, but if it continues to look dire, take ISC_LOCK to IDLE for the OWL shift .

TITLE: 11/07 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Two lock losses this morning, the first from the 1Hz ring up and the second most likely from PEM injections. We haven't been able to get back to low noise since, because the 0.1-1.0Hz seismic motion has risen in the past 6 hours to the point where we can't hold DRMI. 
LOG:

• 1755 Lock loss
• 2154 Lock loss                                      

Most likely from PEM injections, HEPI BS seemed to trip first and then we lost lock 1.2 seconds later.

M. Todd, S. Dwyer, T. Shaffer

After the 1Hz ring up causing a lockloss we decided to move LOWNOISE_ASC to just before NLN and gave it a 5min timer before it goes and sets gains. This should hopefully give the IFO enough time to thermalize past MAX_POWER and keep the higher gains in the ASC loops until the 1Hz oscillation comes back down.

Thu Nov 06 10:16:33 2025 INFO: Fill completed in 16min 29secs

Last checked in alog87617, Closes FAMIS27430

The OUT building fans look the same as during the last check.

The CS fans, MR_FAN1_170_{1.2} look to be ever so slightly increasing in motion over the past 3 days, the rest look just as they did during the last check.

TITLE: 11/06 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 26mph Gusts, 19mph 3min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.46 μm/s 
QUICK SUMMARY:

IFO is LOCKING at LOCKING_ALS

Wind and microseism were high last night and microseism is still quite high and over the 90% threshold. H1 was finishing an automatic initial alignment when I arrived.

Relocking now.

TITLE: 11/06 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 19Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:

H1 was locked the entire shift.  There was one quick drop due to an "automatic" PMC Voltage adjustment.  Microseism is still high and mostly stable at same level for the last 20hrs.
LOG:

• 0327-0330 SQZ lockloss due to PMC having too high of a voltage (see attached)---in contrast to last night when it was too low.  It relocked automatically and PMC Voltage went from 93 down to 30V.
• 0348-0533 Cleaning SPI optics & organizing in Optics Lab (corey, with remote H1 alerts on my phone enabled)

Attached are the plots for all four Test Masses.  Closing FAMIS 28430.

Attached are monthly TCS trends for CO2 and HWS lasers.  (FAMIS link)

NOTE:  The change for ITMx HWS is due to its SLED being swapped on Oct 7 (alog 87353).

TITLE: 11/06 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: We had 3 lock losses from Close_Beam_Diverters today. The first reminded us that the issue is still present, even though we didn't have a problem getting locked last night. For the second, we tried to delay when the OMC whitening came on, thinking it was getting engaged too soon while the beam diverters were closing. The third we spaced out when the beam diverters closed, so they wouldn't close all three at once. It lost lock just after the first one closed. We then relocked and went to observing with the beam diverters open, but this ended up being a rather short, 1hr, lock. On the final attempt of this shift, we tested out moving the beam diverters and ended up moving the ISC_LOCK state that closes them to just after engaging ASC for full IFO. We have been observing since. See alog87970 for more beam diverter investigations.
LOG:

• 2027 Observing with beam diverters open
• 2121 Lock loss
• 2340 Observing with beam diverters closed           

TITLE: 11/06 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 18mph Gusts, 15mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.57 μm/s 
QUICK SUMMARY:

H1 continues to have a rough time with locking....where the pesky HAM1 Beam Diverters have been a focus.  Additionally, in the background, this all happens with very high µseism!  (peaked 17hrs ago and slowly dropped a tiny amount since then.  Looks like we might have just finished riding through a small wind storm.  At the moment, H1 has been locked for almost 1hr.

Observing at 2340UTC with the beam diverters closed this time. We have moved the ISC_LOCK state the closes the beam diverters to right after Engage_ASC_For_Full_IFO. 

On our way up we did some testing of the beam divereters, see alog87978. Both HAM1 beam diverters show a similar response in the GS13s to the one in HAM6, but the one in HAM6 is 10x smaller in magnitude. 

We are back to Observing at 2027UTC but we have the REFL, AS, and POP beam diverters still open. See alog87970 for more info.

TJ had another lockloss around the time of the beam diverters closing this morning, it happened during OMC whitening.  Following up on what Jenne and Elenna saw last night 87962  , I looked at HAM1 GS13s during the lockloss. 

In the attached screenshot the first time cursor shows when the CLOSE_BEAM_DIVERTERS guardian state ends and the guardian moves on to switching the OMC whitening state, the HAM1 ISI is still shaking from the beam diverters when the OMC DCPD gains are changed.  I've saved this template as sheila.dwyer/ndscope/LOCKLOSS/beam_diverter_lockloss_check.yml

I've added a 10 second timer to the close beam diverters state, so that these things will be separated in time.