TITLE: 11/26 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 3mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.21 μm/s 
QUICK SUMMARY:

• We've been locked for 1:40
• Microseism is trending down, the wind is low
• PEM tests are ongoing

In prep for the upcoming CDS upgrades and vent Ryan, Jennie, and I went through the safe SDFs and accepted any values we thought needed it. We accepted all of the sus alignment sliders and checked on things like th IMC PZTs. The HWS had the center cross positions different, accepted. The ZM5 SAMS servo limit was also accepted.

We did our best combing through other subsystems and checking on both monitored and unmonitored channels, and they looked good to our eyes by either being automation controlled or reverted in SDF revert.

Tue Nov 25 10:08:11 2025 INFO: Fill completed in 8min 7secs

Gerardo confirmed a good fill curbside.

Last night I ran a longer version of the full magnetic injection suite starting at about 03:10 UTC, and it finished at 07:33 UTC. This used the same parameters as last week's run, except I doubled the injection time to 5 minutes each.

Exact times and injection parameters are in the usual log directory for the magnetic injections: /ligo/www/www/exports/pem/WeeklyMagneticInjection/logs/1448075483.txt

[Dave, Erik]

h1susauxey and h1susauxex were rebuilt using RCG version 5.5.2 and restarted.

TITLE: 11/25 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 3mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.21 μm/s 
QUICK SUMMARY: H1 is observing and has been locked for almost 13 hours. In and out of observing overnight due to PEM and SQZ tests. DIAG_MAIN reports the CO2 lasers aren't at their nominal power, which I know was changed as part of a script overnight. Maintenance day today; the list seems relatively light.

• Wind low, microseism falling
• ALl other systems nominal

Workstations were updated and rebooted.  This was an OS packages update.  Conda packages were not updated.

Kevin, Sheila, help from TJ and others

I started a script running on my nomachine session that should start a 10kHz ADF sweep at 11, step down the CO2s at around 12:30, measure nlg and rerun the ADF sweep at 1:30 and again at 3am.  If the IFO stays locked through all this the CO2s will be set back to normal at 4:30 am.  If the IFO unlocks the script will quit and the CO2s will be reset by the guardians. 

TITLE: 11/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: One lockloss with an automated relock. We are currently locked (just under an hour) and running a PEM magnetic injection that will run for ~4.5 hours (started at ~ 03:11 UTC), after which Sheila has a TCS CO2 script scheduled to run.
LOG:                                    

• 00:59 UTC GRB-Short E619576
• 01:18 UTC lockloss
  • 01:33 UTC I started an IA after The arms struggled a bit and DOF_2_P for ALS X was pulling it away. ALS_X's signal was very noisy (0.07 lines width by y cursors), DOF_2_Y ended up fixing the noisy ALS_X signal. I was prompted to find Yarm by hand but I just let it keep trying as it was pretty close and it got it on its' own.
  • I was getting some TMSX saturations which I don't usually see, a look at the osems before and during GREEN_ARMS_IA. There were a few small impulses that knocked ALS_X out. There were also a lot of SRM and MC2 saturations during the last section.
  • The SQZ SHG locked at a low power, 5 volts. The notification is flashing on and off, I brought it to DOWN then back to LOCKED while we were relocking and it relocked it at the same voltage.
  • 02:53 UTC NLN
    • 03:00 UTC I cleared some leftover PEM CS excitations

01:18 UTC lockloss, there was a ~8 Hz oscillation in CHARD, DHARD, and DARM.

TITLE: 11/25 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY: Locked for 9.5 hours. Only thing to report is that lots of measurements were taken today and are still being taken.
LOG:

15:30UTC Locked for 30 minutes
 19:30 Broadband calibration measurements taken

TITLE: 11/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.34 μm/s 
QUICK SUMMARY:

• We've been locked for almost 9.5 hours
• Microseism is decreasing, the wind is low/moderate but is predicted to fall off in a few hours
• There are some planned overnight test(s), TCS CO2 stepper, and maybe something PEM

Kappa C has been high by 3% since Sheila updated the power normalization. This is accounted for in the TDCFs, but makes CAL DELTAL calibration >10% in magnitude and will make it harder to understand how kappa C has changed when we come back form the vent. To make our lives easier, I pushed the calibration report 20251115T213724Z.

I followed the usual process of taking a broadband before and after the push. I have loaded the CAL CS model and accepted the new SDFs in observing.

As expected, this has a minimal effect on the GDS uncertainty (because of TDCFs), but has made a large improvement in CAL DELTA L uncertainty.

After Robert stoped for the day, I set up another round of sqz scanning scripts, which should finish in less than 2 hours from now.  

I've also modified Kevin's script to allow me to schedule it to start at midnight, and added some lines that will attempt to step down the ITM CO2 powers to 0.9W from 1.7W.  This is a repeat of a test we tried a few times in June, we had locklosses that might have been unrelated 85335.  If the IFO stays locked for 1 hour after stepping down the CO2s, the script should run the ADF scan again.  I didn't test any of my modifications to the script.

Here's the log of times for the first sqz angle scan tonight: 

log of times : 
nonlinear gain measurement, unamplified seed scan: 1447904771, amplified seed time: 1447904933 nosqz : 1447904755.0

starting angle scan for FIS with zm4 psams at 6.2, zm5 psams at -5.3:

169.8 : 1447906635.0 
159.8 : 1447906876.0 
149.8 : 1447907115.0 
139.8 : 1447907356.0 
129.8 : 1447907596.0 
119.8 : 1447907836.0 
109.8 : 1447908076.0 
99.8 : 1447908316.0 
89.8 : 1447908556.0 
79.8 : 1447908796.0 
79.8 : 1447909036.0 
59.8 : 1447909276.0 
39.8 : 1447909516.0 
19.8 : 1447909757.0 
0.0 : 1447909997.0 
-30.0 : 1447910237.0 
-60.0 : 1447910477.0 
-90.0 : 1447910717.0 
-120.0 : 1447910957.0 
-150.0 : 1447911197.0 

Edited to add: the scan for FIS with nominal psams also completed: 

starting angle scan for FIS with zm4 psams at 6.2, zm5 psams at -0.4

188.2 : 1447912973.0 
178.2 : 1447913213.0 
168.2 : 1447913453.0 
158.2 : 1447913694.0 
148.2 : 1447913933.0 
138.2 : 1447914174.0 
128.2 : 1447914413.0 
118.2 : 1447914654.0 
108.2 : 1447914894.0 
98.2 : 1447915134.0 
78.2 : 1447915374.0 
58.2 : 1447915614.0 
38.2 : 1447915854.0 
18.2 : 1447916094.0 
0.0 : 1447916334.0 
-30.0 : 1447916575.0 
-60.0 : 1447916814.0 
-90.0 : 1447917054.0 
-120.0 : 1447917295.0 
-150.0 : 1447917534.0 

The sqz angle scan ran overnight.  It did no squeezing and an NLG measurement at the start but those times are not included in the log of times for some reason, I will have to find the times manually. 

It looks like the alignment degraded overnight.  The script runs AS42 WFS while it moves the psams, but that must not have worked well enough.  I'm running scan_alignment: results here, angle scan following here.  

It looks like the squeezing angle servo based on the 322 Hz ADF was on while we were in frequency independent squeezing, this will not work well so I've added it SQZ_MANAGER to turn that off when it misaligns the filter cavity. 

Ran scan alignment a second time, as well as scan sqz angle, set guardian to FDS, turned off ADF servo and started Kevin's script at 6:55, it should finish around 8:30.  

Edited to add: I think the first two scans here are good data, so FDS nominal psams and FIS ZM4 at 4, ZM5 at -0.4.  This should also have teh nlg measurement for Kevin's script that I'll have to go find the times for by hand.

log of times : 
starting angle scan for FREQ_DEP_SQZ with zm4 psams at 6.2, zm5 psams at -0.4184.8 : 1447823586.0 
174.8 : 1447823826.0 
164.8 : 1447824067.0 
154.8 : 1447824306.0 
144.8 : 1447824547.0 
134.8 : 1447824787.0 
124.8 : 1447825027.0 
114.8 : 1447825267.0 
104.8 : 1447825507.0 
94.8 : 1447825747.0 
94.8 : 1447825987.0 
74.8 : 1447826227.0 
54.8 : 1447826467.0 
34.8 : 1447826707.0 
14.8 : 1447826948.0 
0.0 : 1447827187.0 
-30.0 : 1447827428.0 
-60.0 : 1447827668.0 
-90.0 : 1447827908.0 
-120.0 : 1447828148.0 
-150.0 : 1447828388.0 
starting angle scan for FREQ_INDEP_SQZ with zm4 psams at 4.0, zm5 psams at -0.4182.1 : 1447829109.0 
172.1 : 1447829349.0 
162.1 : 1447829589.0 
152.1 : 1447829829.0 
142.1 : 1447830069.0 
132.1 : 1447830309.0 
122.1 : 1447830549.0 
112.1 : 1447830789.0 
102.1 : 1447831029.0 
92.1 : 1447831269.0 
92.1 : 1447831510.0 
72.1 : 1447831749.0 
52.1 : 1447831990.0 
32.1 : 1447832229.0 
12.1 : 1447832470.0 
0.0 : 1447832710.0 
-30.0 : 1447832950.0 
-60.0 : 1447833190.0 
-90.0 : 1447833430.0 
-120.0 : 1447833670.0 
-150.0 : 1447833910.0 
starting angle scan for FREQ_INDEP_SQZ with zm4 psams at 6.2, zm5 psams at -4.5175.0 : 1447835290.0 
165.0 : 1447835530.0 
155.0 : 1447835770.0 
145.0 : 1447836010.0 
135.0 : 1447836250.0 
125.0 : 1447836490.0 
115.0 : 1447836730.0 
105.0 : 1447836970.0 
95.0 : 1447837210.0 
85.0 : 1447837450.0 
84.9 : 1447837690.0 
64.9 : 1447837930.0 
44.9 : 1447838171.0 
24.9 : 1447838410.0 
4.9 : 1447838651.0 
0.0 : 1447838891.0 
-30.0 : 1447839131.0 
-60.0 : 1447839371.0 
-90.0 : 1447839611.0 
-120.0 : 1447839851.0 
-150.0 : 1447840092.0 
starting angle scan for FREQ_INDEP_SQZ with zm4 psams at 6.2, zm5 psams at -5.3173.6 : 1447840601.0 
163.6 : 1447840841.0 
153.6 : 1447841081.0 
143.6 : 1447841321.0 
133.6 : 1447841561.0 
123.6 : 1447841801.0 
113.6 : 1447842041.0 
103.6 : 1447842281.0 
93.6 : 1447842521.0 
83.6 : 1447842761.0 
83.6 : 1447843001.0 
63.6 : 1447843242.0 
43.6 : 1447843481.0 
23.6 : 1447843722.0 
3.6 : 1447843962.0 
0.0 : 1447844202.0 
-30.0 : 1447844442.0 
-60.0 : 1447844682.0 
-90.0 : 1447844922.0 
-120.0 : 1447845162.0 
-150.0 : 1447845402.0 
starting angle scan for FREQ_INDEP_SQZ with zm4 psams at 6.2, zm5 psams at -0.4183.6 : 1447846542.0 
173.6 : 1447846782.0 
163.6 : 1447847022.0 
153.6 : 1447847263.0 
143.6 : 1447847502.0 
133.6 : 1447847743.0 
123.6 : 1447847983.0 
113.6 : 1447848223.0 
103.6 : 1447848463.0 
93.6 : 1447848703.0 
93.6 : 1447848943.0 
73.6 : 1447849183.0 
53.6 : 1447849423.0 
33.6 : 1447849663.0 
13.6 : 1447849904.0 
0.0 : 1447850143.0 
-30.0 : 1447850384.0 
-60.0 : 1447850624.0 
-90.0 : 1447850864.0 
-120.0 : 1447851104.0 
-150.0 : 1447851344.0 

Got one more scan with good alignment for ZM5 psams at -4.5.  There was a no sqz time when the nlg was measured a few minutes before this, but times aren't recorded in the log so I'll have to go find the times later. 

starting angle scan for FIS with zm4 psams at 6.2, zm5 psams at -4.5169.4 : 1447867479.0 
159.4 : 1447867659.0 
149.4 : 1447867839.0 
139.4 : 1447868019.0 
129.4 : 1447868199.0 
119.4 : 1447868379.0 
109.4 : 1447868559.0 
99.4 : 1447868739.0 
89.4 : 1447868919.0 
79.4 : 1447869099.0 
79.4 : 1447869279.0 
59.4 : 1447869459.0 
39.4 : 1447869640.0 
19.4 : 1447869819.0 
0.0 : 1447870000.0 
-30.0 : 1447870180.0 
-60.0 : 1447870360.0 
-90.0 : 1447870540.0 
-120.0 : 1447870720.0 
-150.0 : 1447870900.0 

At some point within the last year, both the X and Y-axis accelerometers (PEM-CS_ACC_LVEAFLOOR_HAM1_X and Y) were kocked off (pictured here) the small metal cube they were mounted to. I reattached them as of Nov 11, 2025. I believe the capacitor position sensor box was pushed back into the accelerometers which knocked them off. Image 3 shows where the CPS box is in relation to HAM1 (circled in red) and image 4 shows where it is in relation to the accelerometers. 

Additionally, two other accelerometers have been remounted with epoxy in August: PEM-CS_ACC_BEAMTUBE_SRTUBE_X (remounted August 5, 2025) and PEM-CS_ACC_BEAMTUBE_YMAN_X (remounted August 12, 2025). Both had fallen off the beamtube and had been hanging in the air for an unknown amount of time until someone noticed. 

TITLE: 11/18 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Calibration
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.46 μm/s 
QUICK SUMMARY: Locked for 22 hours, SUS charge and PEM mag. injections running now. Maintenance today, then PEM measurements for the rest of the week, because....

O4C will end in 30 minutes. What a great run! Well done everyone!!

Some DRMI locking info

MICH, PRCL, SRCL filter banks during the "acquire DRMI 1f" state before the lock is grabbed.

OLGs for MICH, PRCL, SRCL after 1F acquisition, DRMI ASC engaged.