TITLE: 12/23 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: A fittingly quiet day today. HAM7 alignment work wrapped up this morning, so I transitioned the LVEA to Upgrade Phase Laser SAFE for the break. The stair move from EY has been postponed to the new year due to high tumbleweed interference. Control room workstations (with the exception of operator and VAC stations) and wall FOMs (with the exception of CDS, VAC, and temperature monitors) have all been shut down.
LOG:

FAMIS 27831, last checked in alog88548

No water was added, filters looked good, and Dixie cup was dry. Updated T2200289 spreadsheet.

The PSL PMC and RefCav have been slightly misaligned since the power outage, so today I took a bit of time to touch these up before the holiday break.

With the ISS off, I was able to only improve the PMC a bit, bringing PMC TRANS from 105.7W to 106.3W and PMC REFL from 25.5W to 25.2W. I then re-engaged the ISS and slightly adjusted the RefSignal to bring the diffracted power back to around 4%. Moving onto the RefCav, here I got somewhat better improvements, bringing the TPD signal up from 519mV to 530mV.

FAMIS 27619, last checked in alog88411

The script reports high frequency noise is elevated for ETMY_ST2_CPSINF_V2

Due to ongoing vent work (HAMs 1 and 7 are vented, HEPI for HAMs 1-4 are locked), trends may look slightly different than nominal.

Tue Dec 23 10:07:28 2025 INFO: Fill completed in 7min 24secs

TITLE: 12/23 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: MAINTENANCE
    Wind: 6mph Gusts, 4mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.21 μm/s 
QUICK SUMMARY: For the last shift of 2025, there's not too much slated for today; see below.

• Finish SQZ beam alignment in HAM7
• Transition LVEA to Laser SAFE
• Move platform stairs from EY
• VAC walkthrough checking purge air and door covers

Mainly a note for myself as I kept getting the syntax wrong.

To generate a nice button that opens your control input/output matrix, use this script form Ryan, Jeff & co.

python3 /opt/rtcds/userapps/release/cds/common/scripts/generate_KisselButton2024.py --bw 10 --bh 10 --dl "OUTMTRX_Y" --sn "IMC_WFS_OUTMATRIX_Y" 5 5 "H1:IMC-OUTMATRIX_Y" > IMCJAC_OUTMATRIX_Y.adl

Here bw is button width, bh is button height, dl is the label for the button (OUTMTRX_Y), "IMC_WFS_OUTMATRIX_Y" is the name of the file opened by the button, "H1:IMC-OUTMATRIX_Y" is the channel name prefix of your matrix in the simulink model, and IMCJAC_OUTMATRIX_Y.adl is the file I saved my button in.
 

I set up medm screens for JAC ASC and LSC located at /opt/rtcds/userapps/release/ioo/common/medm.

The structure is sitemap > IOO > JAC Overview for the main screen.

The WFS control is at  sitemap > IOO > JAC Overview > JAC ASC.

The length control filters are in sitemap > IOO > JAC Overview > L_SERVO.

I have also included links to the DC QPD alignment screens for JAC-WFS_A and B, and the JAC-REFL_A PD used for length sensing.

The screen also contains links to the screens for the JAC-TRANS_A PD, in-air picomotors, JM1 tip-tilt, PSL periscope PZT, JAC Heater and JAC PZT.

These latter readouts are all from ethercat.

We still need some kind of readout for the in-air trigger PD and a guardian script for control.

In the meantime I am working on changes to the IMC WFS medm screens for when we have JAC installed as we will need to use the new JM3 tip-tilt for feedback instead of the PSL periscope PZT.

This trial screen is saved as /opt/rtcds/userapps/release/ioo/common/medm/IMC_WFS_MASTER_JAC.adl.

Jennie W, Dave B,

Jeff and I put in a bypass in the h1ascimc model (see alog #88465) so we could put in the simulink infrastructure to switch between using the PSL periscope PZT as part of the IMC control or as part of the JAC control.

At the moment the switch 'H1:ASC-IMCJAC_PZTOUTSW' is set to ON which should let the IMC servo use the PZT.

However the logic I put in will not switch the feedback to take inputs from the JAC servo if I turn the switch off.

This is because Choice 2 and 3 in the picture are set to pass their first input if the switch output is '>= 0', so whichever state it is in the IMC PZT output will be sent to the DAC.

I have changed these choices to >0 so that the top input (IMC PZT output signal) will be sent to the DAC if the switch is 1 and the bottom input (JAC PZT output signal) will be sent to the periscope otherwise.

I committed the changed /opt/rtcds/userapps/release/asc/h1/models/h1ascimc.mdl to the svn.

Last week Phil gave me the old POP X IN-AIR WFS PD as our JAC WFS A PD had a wobbly pin on the Q3 LO output.

Masayuki had tried connecting to this with both cables we had.

When I tried plugging in the Q3/Q2 cable on the POP X WFS I realised that one of these cables itself will not seat on this connector properly. I tried with the other cable and this one connects to the Q3/Q2 output on POP X ok.

I will get together with Phil in the new year and investigate more.

Jennie W, TJ, Ryan C

Went into HAM1 and covered up everything that wasn't already covered (a single screw on the left-hand HEPI pier and some iris parts on the table).

Ryan C put extra clips on the C3 cover.

HAM1 should be all cosy for the holiday.

TITLE: 12/23 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: Light day of work today. SQZ beam alignment continued in HAM7 (alog88641), the EY wind fence was patched up (alog88640), more clamps were placed on HAM1 door covers for the break, and fire pumps were churned. HAM7 alignment will continue and hopefully conclude tomorrow, then the LVEA will be transitioned to Laser SAFE.
LOG:

Kar Meng, Sheila

I walked FC1 back to it's original slider position 88602 while walking the two steering mirrors between the OPO and SFI1 to keep the beam transmitted towards ZM4. Once this was done the beam was hitting the beam dump meant to catch the reflection off the beam diverter from the IFO.  I touched the last mirror on the VIP, B:M4, to bring the beam towards the center on the iris in front of ZM4, and then Kar Meng was able to see a beam on the SQZT7 periscope.  

Before we started: ZM4: P -338.7 Y -1297.7 ZM5: -120 P -460 Yaw  We moved ZM4 +5 to get the transmitted beam onto the OPO IR PD, ZM4 -338 P -1297.7 Y, ZM5 -720 P 839 Y.  Then we were able to align the CLF to the cavity a bit better by watching the flashes on the scope.  We can see evidence of clipping as the ZMs drift in the purge air the transmitted power fluctuates,  

We adjusted the in chamber CLF refl steering mirror to center on the CLF top periscope mirror, and Kar Meng aligned the CLF refl shutter PD using mirrors on SQZT7.  We were able to see that the OPO was semi-locked on the dither lock, but this wasn't stable. 

Last week we found that some of the hardware on the EY wind fence had broken, which meant some of the main support wires for the fence were dangling free, weakening the fence and possibly further damaging the scrim in any future storms. The main failures were in the all thread that goes through the posts and attach the wire anchor points to the post. We had a limited window today to go and try to patch the fence this morning, so that's what Randy, Mitch and I did. Forecast promised us some sun, but that never really materialized, so it was pretty chilly. Fence is patched up now, Randy and Mitch will return the lift to LEXC this afternoon, after everybody thaws out. 

FAMIS 31117

Since I missed pulling these trends last week, I plotted a total of 17 days this time around. Overall, things look to be running smoothly. Robert was in the enclosure 6 days ago tracing cables, which shows clearly in the relevant trends. The PMC and RefCav have needed some alignment touchup since the power outage based on the beam images, so I'll do that either today or tomorrow before the holiday break.

Mon Dec 22 10:05:09 2025 INFO: Fill completed in 5min 5secs

I have added a link to the Vacuum section of the CDS web page which opens the latest Zeks dryer skid camera images. These images are running on the virtual FOM cdsws12, display=5. They are updated every minute.

Gerardo has placed a clock on top of the skid to give a timestamp.

link to image is:

cdsws12_5-1.png

Bypass will expire:
Mon Dec 22 01:07:27 PM PST 2025
For channel(s):
    H0:FMC-CS_FIRE_PUMP_1
    H0:FMC-CS_FIRE_PUMP_2
 

Closes FAMIS27623, last checked in alog88538

Laser Status:
    NPRO output power is 1.839W
    AMP1 output power is 70.55W
    AMP2 output power is 139.7W
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 12 days, 15 hr 38 minutes
    Reflected power = 25.34W
    Transmitted power = 105.7W
    PowerSum = 131.1W

FSS:
    It has been locked for 3 days 16 hr and 18 min
    TPD[V] = 0.5215V

ISS:
    The diffracted power is around 4.1%
    Last saturation event was 5 days 19 hours and 36 minutes ago

Possible Issues:
    PMC reflected power is high