With help from TJ, I migrated a majority of the ASC filters controlled by ISC_LOCK into an lscparams dictionary called asc_filters, and edited the filter engagement/disengagement commands in the guardian to call from this dictionary. Along the way, I also edited the lscparams asc_gains dictionary, and removed commented out code that seemed unnecessary or out of date.

New practice: each dictionary entry in asc_filters includes ALL filter bank settings that should be ON at a given time, so all filters to be engaged as well as OUTPUT, DECIMATION (INPUT as well, if it is supposed to be on). When filter changes are made, we can use the command ezca.get_LIGOFilter([DOF]).only_on(*lscparams.asc_filters[DOF][P/Y][NAME]). The names of the filter settings are named after the guardian state in which they are engaged, with some small edits if one guardian state has multiple filter engagement steps.

Example:

In PREP_ASC_FOR_FULL_IFO, CSOFT P filters are set up, but the input is left off until engagement in ENGAGE_SOFT_LOOPS. Then, after the loop is engaged and converged, FM1 is disengaged. Finally, in POWER_25W, FM3 is engaged as a boost.

The dictionary is set up as:

In PREP_ASC:

Therefore, when we make adjustments to ASC filters or gains, we will need to edit the dictionaries in lscparams. This will ensure that any changes also get picked up by the seismic guardian.

These are things that are not yet controlled by this dictionary:

• none of these ASC loops included offsets, so the filter bank settings do not engage the offsets. However, using the "only_on" command can disengage an offset, if it is not put into these settings.
• the ASC BLEND filters for the HARD and SOFT loops are still controlled outside of this dictionary
• I left MICH ASC filtersout of the dictionary for now, since its settings are first controlled by ISC_DRMI and then the loop is left on thereafter.

TJ is currently editing the seismic guardian to create the ASC higain state and then a state that takes ASC back to its lownoise state. Now, we can pull the gain and filters settings from these dictionaries!

WP12827 HLTS Estimator h1sus[pr3,sr3]

Jeff, Edgard, Brian L, Corey, Oli, Jonathan, Erik, Dave:

We installed Stanford's new h1sus[pr3,sr3] models and new MEDM screens. Each model added 255 slow and 37 fast channels to the DAQ. All the fast channels are acquired at 512Hz.

DAQ Restart

Jonathan, Dave:

The DAQ was restarted for the above model changes. No major issues, but both GDS needed a second restart.

The front bearing on the de-energized fan at End X was replaced this morning. The fan was jogged to ensure the vibration was resolved. 

M. Todd, C. Compton, S. Dwyer

I followed the steps layed out in alog 87316, and ran into OM suspension saturations before getting to start my measurement. I turned off the centering loops and cleared the integrators (you have to turn off OMC ASC and hit graceful clear history as well). Then turning them back on they seemed fine. I turned on the OMC ASC and set the LSC offset appropriately and then went out and turned off the sidebands.

We took scans for ITMX and ITMY about 25 minutes after the unlock, so we call this the HOT-ish (tepid) scan with CO2s on.

We then waited an hour with the ITMs realigned so that the HWS could track the defocus before taking another set of OMC scans.

We then turned the CO2s off and left the HWS aligned to watch the defocus change from them. ITMX HWS did not show a lot of change so upon examination it seems the SLED source is either dying or the CO2 is misaligned. TJ and Camilla are working on replacing the source to see if that will remedy things.

After an hour with the CO2s off we repeated the scans for each test mass for the final measurements.

Analysis will follow in a comment but I've attached the DTT screenshot below.

Matt, TJ, Sheila, Camilla

Today Sheila and Matt have been doing some IFO/CO2/OMC scan tests, in doing this we noticed the CO2X looked very misaligned, plots of CO2. However the SLED has degraded v. quickly since it was last swapped May: 84417, and even the IFO beam plots (120s and 7minutes) look a little strange and clipped.

We plan to replace this SLED before we decide if the CO2X is really misaligned or not. Procedure to realign CO2s with picos is: 68391, most recently blasted 2W for 2mins and waited ~10mins between pico moves. Last checked Oct 2024 80834 for ITMY and March 2024 for ITMX 75987

J. Oberling, R. Short

After the PSL pump diode operating current increase earlier this morning, we performed a rotation stage calibration.  The curve is attached, as well as the SDF update.  New parameters:

• Power in
  • Old: 70.0
  • New: 71.7781
• Parameter B
  • Old: -24.79
  • New: -24.8263
• All other parameters unchanged.

Tue Oct 07 10:04:49 2025 INFO: Fill completed in 4min 46secs

Gerardo confirmed a good fill curbside.

J. Oberling, R. Short

This morning we tweaked the operating current of the PSL 4S-HP amplifier pump diodes; this was done with the ISS OFF.  The tweaks can be seen in the attached plot.  End numbers:

• PMC Trans: ~106.9W
• PMC Refl: ~23.9W
• Amp2 output: ~140.0W
• Amp1 output: ~70.7W

With the ISS back ON, we had to decrease the RefSignal to -2.01 V to put the diffracted power % back at our usual 4% (this is due to the increase in power out of the PMC).

To end, we took the opportunity to tweak the beam alignment into the RefCav.  We started with a TPD of ~0.533V, and ended with a TPD of ~0.55V.

A rotation stage calibration will need to be performed due to the increased power out of the PMC.

Did the Dust Monitor Check and a new (to me atleast) problem would be for DR2 (Diode Room 2).

TITLE: 10/07 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 2mph Gusts, 1mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.13 μm/s 
QUICK SUMMARY:

First things first, at Camilla's request, I did a PAUSE for TCS_ITM[x/y]_CO2_PWR Guardians---this was for a possible Matt T. test (he just walked in and was hoping for a recently-thermalized H1, but H1is only at NLN for 1.25hrs (he's contacting Sheila).

Other than that, preparing for Maintenance!

P.S. There was a dust alarm for one of the Optics Labs when I arrived

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

TITLE: 10/07 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:
Super Event Candidate: S251006dd ! 
Other than that it was a very quiet night, H1 has been locked for 10 hours  without issue.

Note to the morning ops:  
Please pause the Co2_PWR guardian before lockloss this Tuesday, see mattermost. 

LOG:
No Log

TITLE: 10/06 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 4mph 3min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.08 μm/s 
QUICK SUMMARY:
H1 has been locked for 4.5 hours & we have no plans to deviate from observing all night.

 

TITLE: 10/06 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 155Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Commissioning time with one lockloss this morning followed by a pretty straightforward relock this afternoon. H1 has now been locked and observing for 4.5 hours.

• 15:30 - Dropped observing for commissioning
• 17:14 - Lockloss, possibly from commissioning
• 18:15 - Initial alignment finished, starting lock acquisition
• 19:06 - Observing

LOG:

FAMIS 37257, last checked in alog86733

Following the power outage at the start of September, dust counts were high across the corner station and came back down over the course of several days. The diode room dust monitor seems to flatline more often and looks to need to be restarted now.

Made a modification to the library parts needed for adding an OSEM estimator to the Length degree of freedom for the HLTS models. The change comes with an addition of a few DQ channels, listed on the.txt attached. This work is part of the ECR summarized here: E2500251.

The library parts modified live in /opt/rtcds/userapps/trunk/sus/common/models/ , they are HLTS_MASTER_W_EST.mdl and SIXOSEM_T_STAGE_MASTER_W_EST.mdl.
The changes were committed to the userapps svn under revision 33319.

Summary of changes:

SIXOSEM_T_STAGE_MASTER_W_EST.mdl

• Replaced the two estimator blocks for ptich and yaw (named EST_P, and EST_Y, respectively) on the top level for a single subsystem called EST, which contains copies of the library parts for L, P, and Y. [See attached for the new layout]. The Length estimator (Inside EST>L) is new to the model and comes with a bunch of DQ channels listed in the .txt attached.

• Changed the ADD block to fork the Longitudinal drive into a light-damping and an estimator path, in line with the rest of the estimator infrastructure already in place for Pitch and Yaw. Notably, we added epics outputs ADD_L_ISC_MON and ADD_L_EST_MON in addition to the old ADD_L_TOTAL_MON inside the ADD block.

• Added a testpoint for the total longitudinal drive inside the ADD block. ADD_L_TOTAL

•  

  Changed the input wiring to the DELAY block so the estimator L drives are the ones that go into the block and back to the EST subsystem. 
   

HLTS_MASTER_W_EST.mdl

• added 'M1_ADD_L_TOTAL_DQ' to the list of DQ channels.

List of new DQ channels:

The attached text file lists both the PR3 and SR3 channels that we will be adding with the aforementioned model changes.. All new DQ channels are sampled at 512 samples/second.

M. Todd, S. Dwyer

I'm sure there are other sources for this instruction set, but it will serve me later having written this out -- lending some muscle memory hopefully. We are interested in taking several OMC scans over the next couple weeks to estimate mode-matching of various cavities to the OMC in comparison to our models.

Step 1: Suspension Settings for the TMs and PRM/SRM:

Going to sitemap > ASC > IFO Align Compact , you can find shortcuts for each of the suspensions. We will want to take both the ETMs to misaligned as well as the PRM and SRM. If we want to do a single bounce with ITMX, we misalign ITMY and vice-versa.

To misalign an optic from IFO Align Compact, click on the full optic suspension shortcut with the corresponding optic name (e.g. overlapping squares + "ETMX"). At the top of the suspension screen, take the guardian state to misaligned. 

Step 2: Turn on ASC centering loops for the OMs

Going to sitemap > ASC > ASC Overview > DC Centering (middle screen), turn on the inputs to DC3 and DC4 pitch and yaw loops.

Make sure that the inputs to the centering loops start to go to zero and the outputs are not blowing up to infinity.

Then go to sitemap > OMC > OMC Overview > fast shutter and ensure that the status reads open, otherwise, hit open.

Step 3: Turn on OMC ASC and set gains and offsets

Going to sitemap > GRD > ISC Overview find the OMC guardian and take it to ASC_QPD_ON

Going to sitemap > OMC > OMC control, set the MASTER GAIN to 0.02  and bring the LSC offset to the far left ( -50.0 ). 

Step 4: Go out and turn off the sidebands (9, 45, 118 MHz)

Going out to the PSL racks, in the far right stack towards the bottom find the EOM drivers labeled 9MHz and 45MHz and flick the switch on the panel to OFF

Then below the RF Combiner Amplifier, unplug the cable going to the BNC port label 118 MHz.

Step 5: Run OMC scan

An example can be found in my templates /ligo/home/matthewrichard.todd/Templates/omc/20251006_OMC_scan.xml

Open the template with DTT and save it as another copy, naming it with whatever date you are running it plus any notes.