Filter Cavity Tube Bad Gauge Removal and Replacement-Replacement

(Jordan V., Gerardo M.)

Today we replaced the MKS gauge at FC-C-1, this is the first 6 way cross inside the filter cavity tube enclosure, we installed serial number 390F00490, twice, yes two times.  It turns out that the flange has some scratches on the knife edge, and it was not going to seal regardless of the effort that we put into it.  Once the gauge was removed the scratches transferred to the copper gasket.  We replaced it with serial number 390F00495, this one seems to be doing good.  New conflat was leak tested and no leak was detectable above 2.42e-10 torr*l/sec.

The old gauge serial number is 390F00406 with a date code of June 2021.

Tuesday Ops Eve Shift.

TITLE: 06/24 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 148Mpc
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 11mph Gusts, 7mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:
H1 has been Locked for close to an hour.

Note:
CDS Alarm H0:VAC-LY_Y3_PT114B_PRESS_TOUR  alarmed at 1434843240.  Oli metioned that Davis said this is nothing to worry about, I'm just documenting it here.
Everything else looks fine.
 

 

Comparing HAM1 ISI motion to HAM1 Passive stack TT L4Cs

I did a very quick search and didn't find any other posts, so I putting a plot here comparing the motion of the pre-vent HAM1 TT L4C passive stack motion to the current HAM1 ISI motion. ISI motion is generally 1-3 orders of magnitude better, only with a very narrow window at 15hz where the passive stack barely reached down to the ISI motion, but only for the x dof. Blue, green and brown are the ISI, cyan, pink and black are the passive stack.

Almost done with the st0 feedforward, X,Y,Z and RY are running. Still have to do tilt decoupling (which will improve low frequency motion), vac work at the chamber kept tripping the ISI during my measurements this morning.

7dB on SQZ HD with New Spot in OPO Crystal

OPO Setpoint	Amplified Max	Amplified Min	UnAmp	Dark	NLG	OPO Gain
95uW	0.0530	0.001913	0.005307	9.1e-5	10.16	-8

Vacuum burt-restore script

Following the restart of any vacuum Beckhoff controller it is necessary to burt-restore the settings back to what they were prior to the restart (e.g. CP PID settings). We are using the slow controls Vacuum SDF to display which settings need to be restored, but the SDF cannot do the revert itself since it runs on a non-authorized server (h1ecatmon0) which does not have write access to the vacuum system.

Previously I had written a script in user vacuum's home directory on zotvac0 to do this restore for h0vaclx, today I made the script generic, taking the system to be restored as an argument.

The restoration process following a restart of a vacuum system is now:

On any CDS workstation open the vacuum SDF window showing the differences list, we will use this to verifty the restore worked correctly

As user vacuum on zotvac0 (restricted access to vacuum team, CDS and OPS) run the ./burt_restore_vac.bsh script with no arguments to get the usage:

vacuum@zotvac0:~$ ./burt_restore_vac.bsh 
Incorrect arguments given
 
Usage:
    burt_restore_vac.bsh SYS
    where SYS is one of:
    lx ly ex ey mx my mr
 
This morning I ran the script with argument = ly which correctly restored the h0vacly settings to those in h1vacuumsdf's safe.snap file***

OPO Crystal Spot Moved

Sheila, Camilla, WP#12632.

Moved OPO Crystal Spot using instructions in 80451, last done in January 2025 82134.

• Starting Position: forth spot from the left. 0.830V is the height of green 00 mode. 41% of green power in 01 mode
  • Alignment looked very bad, photos attached. 
• Ending Position: second spot from the left. 2.23V is the height of green 00 mode. 36% of green power in 01 mode
  • Note that we have used this spot before but LLO found that it was okay to go back to old spots and this spot looked better than the edge spot

For all of the used spots we moved through, to the left of the co-resonance, the loss suddenly increased as in the spot to the side of the current co-resonance was in the past used. This made us think that we are set to a different temperature to other times we have moved the spot. 

Measured NLG to be 10 with the OPO TRANS setpoint set to 95uW, the NLG was very low 7 with 80uW, hence staying at 95uW, the NLG's seemed to have dropped this week 85252, we don't know why. 

Tagging OpsInfo: This change will mean that for the next week or so we'll need to more regularly adjust the OPO TEC temperature, instructions are in 80461. Should be done pro-actively when relocking and if range is low in observing. Pop out of observing to adjust while in Observing. 

New rev-lock model build/install procedure

Today's h1asc model change was a good opportunity to consolidate the new model build procedure now that H1 models are rev-locked (source code locked to specific subversion revision numbers).

1) build the model as normal to verify that it builds (user controls on h1build)

> rtcds build h1asc

2) run model through check_model_changes to check if DAQ changes are pending (user myself on opslogin0)

> check_model_changes h1asc

In this case 4 fast channels are to be added to the DAQ

3) run rev-update on model to check subversion status (user controls on h1build)

> rtcds rev-update h1asc

This showed that the h1asc.mdl model has local mods pending commit.

4) commit local mods to subversion (user myself on opslogin0)

Using the DAQ change information from 2) I committed h1asc.mdl to subversion

> svn ci -m "Elenna 23jun2025 add 4 DQ chans DC6_[P,Y]_[IN1,OUT]" h1asc.mdl

5) run rev-update again (user controls on h1build)

> rtcds rev-update h1asc

At this point I was able to accept svn HEAD as the rev-lock versions for h1asc's source files

6) do a rev-locked build of h1asc (user controls on h1build)

> rtcds build --rev-locked h1asc

7) install the model (user controls on h1build)

> rtcds install h1asc

 

2025-06-24 Inventory of (UK Satamp) SUS Damping Loop Open Loop Gain TF Measurements

J. Kissel

In order to prepare for implementing ECR ECR E2400330 which improves the whitening within the UK sat amps to improve the OSEM signal chain's total sensor noise between 0.05 and 10 Hz (see CSWG:11249 for a model of the noise improvement), I want to be sure we have a up-to-date measurement of the damping loop's suppression. This is so it can be divided out from the estimate of sensor noise before vs. after the change. Also, in general, it's good it we have pre-tuned templates for open loop gain transfer functions, as they use a markedly different excitation than "standard" "health check" transfer functions because the excitation must go through the damping loop controller filter.

Note: if we compensate for the change in satamp frequency response well (with the anti-whitening filters in the OSEMINF banks), then the open loop gain / loop suppression / close loop gain should remain unchanged across the whitening filter change, so one we have these we shouldn't need to take them again (unless commissioning demands more changes to the filters). 

Since this kind of inventory is best done digitally for other folks reference and in case I have to delegate, I share it here. 
The following is a table of available and believed "should be the same as now" open loop gain TF templates and aLOGs for all suspensions with UK satellite amplifiers (and the Filter Cavity HSTSs FC1 and FC2 for good measure).
Where there isn't templates that are "still valid," I give a brief note as to why. 

Optic    aLOG             Templates                                                                                         Still Valid?        If not, why not?
ETMX M0  (n/a)            none                                                                                              NO                  *Never measured
ETMX R0  (n/a)            none                                                                                              NO                  *Never measured

ETMY M0  LHO:6933         2013-07-??_????_H1SUSETMY_M0_*_WhiteNoise_OLGTF.xml                                               NO                  *Way old, not enough DOFs
ETMY R0  LHO:68405        2023-04-04_1731_H1SUSETMY_R0_WhiteNoise_*_0p01to50Hz_OpenLoopGainTF.xml                           Yes                 *But would be good to remeasure w/ and w/o R0 tracking

ITMX M0  LHO:7720         2013-09-10_2306_H1SUSITMY_M0_[R,V]_WhiteNoise_OLGTF.xml                                           NO                  *Way old, not enough DOFs
ITMX R0  (n/a)            none                                                                                              NO                  *Never measured

ITMY M0  (n/a)            none                                                                                              NO                  *Never measured
ITMY R0  (n/a)            none                                                                                              NO                  *Never measured

TMSX     (n/a)            none                                                                                              NO                  *Never measured

TMSY     LHO:6654         2013-06-06_1511_H1SUSTMSY_M1_[L,P]_WhiteNoise_OLGTF.xml                                           NO                  *Only L and P measured
 
BS       LHO:71269        2023-07-12_2000_H1SUSBS_M1_CDBIOState_1_WhiteNoise_*_0p01to50Hz_OpenLoopGainTF.xml                Yes                 *Oplev Damping OFF
         LHO:71465        2023-07-18_1740_H1SUSBS_M1_CDBIOState_1_OLDampingON_WhiteNoise_*_0p01to50Hz_OpenLoopGainTF.xml    Yes                 *Oplev Damping ON

MC1      LHO:85291        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          Yes

MC2      LHO:85291        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          Yes

MC3      (n/a)            none                                                                                              NO

PRM      LHO:85292        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          NO                  *EPICs gains changed since

PR2      LHO:85292        2022-10-12_2020_H1SUSPR2_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          NO                  *EPICs gains changed since

PR3      LHO:64152        2022-07-26_1820_H1SUSPR3_M1_WhiteNoise_*_0p02to50Hz_OpenLoopGainTF.xml                            Yes

SRM      LHO:85285        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF.xml                           NO                  *EPICs gains changed since

SR2      LHO:65314        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          NO                  *EPICs gains changed since

SR3      LHO:85255        2025-05-21_1800_H1SUSSR3_M1_WhiteNoise_*_0p02to50Hz_OpenLoopGainTF.xml                            Yes

FC1      LHO:85290        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_*_0p01to100Hz_OpenLoopGainTF_new.xml          Yes

FC2      (n/a)             none                                                                                             NO

OMC      LHO:60054        2021-09-28_1640_H1SUSOMC_M1_WhiteNoise_*_0p02to50Hz_OpenLoopGain_2014vs2021Designs.xml            Yes

IM1      LHO:64039        2022-07-19_H1SUSIM1_M1_WhiteNoise_*_OLG.xml                                                       Yes

IM2      LHO:64039        2022-07-19_H1SUSIM2_M1_WhiteNoise_*_OLG.xml                                                       Yes

IM3      LHO:64039        2022-07-19_H1SUSIM3_M1_WhiteNoise_*_OLG.xml                                                       Yes

IM4      LHO:64039        2022-07-19_H1SUSIM4_M1_WhiteNoise_*_OLG.xml                                                       Yes 

So -- to we really need to focus our measurement energy on the QUADs which have really never been characterized and the recycling cavity HSTS which have their EPICs gains changed in 2023.
The good news is that 2023 me tuned a full set of QUAD R0 open loop gain TF templates using ETMY, so these templates should be viable for both the rest of the R0 chains as well as the main chain with little-to-no tuning (assuming alignment biases are not eating up a different amount of DAC range).
That leaves on the TMTS not having tuned templates, so that's where we'll have to spend our tuning time.
We obviously have templates that will work for the missing / out-of-date HSTSs.

I'll begin the campaign during upcoming Tuesdays, in advance of making the ECR E2400330 change.

CDS Maintenance Summary: Tuesday 24th June 2025

WP12623 h1asc add fast channels to DAQ

Elenna, Dave:

A new h1asc model was rev-locked and installed. Four new fast DQ channels were added to the DAQ (channel, rate):

> H1:ASC-DC6_P_IN1_DQ, 256
> H1:ASC-DC6_P_OUT_DQ, 512
> H1:ASC-DC6_Y_IN1_DQ, 256
> H1:ASC-DC6_Y_OUT_DQ, 512

DAQ restart needed.

WP12570 Restart Digivideo Cameras with latest pylon

Patrick, Jonathan, Dave:

Jonathan updated pylon on h1digivideo[4,5,6] and restarted all the camera servers on these machines. This should fix the bug of stuck open files accumulating when the camera connection is interrupted.

No DAQ restart needed.

Add PID SMOO channels to vacuum SDF

Dave:

Prior to today's h0vacly restart I added the missing CP PID-control SMOO channels to the vacuum SDF monitor.req and safe.snap files. SDF was restarted 08:29. No DAQ restart needed.

WP12577, 12608, 12615 Upgrade LY Vacuum Controls

Janos, Gerardo, Patrick, Jonathan, Erik, Dave:

Patrick installed a new h0vacly system this morning. Main items are:

• Renaming of FCES Ion pump channels
• Removal of old PT100 channels

Pleae see Patrick's alog for details.

A extended DAQ restart was required, renaming Ion Pump raw minute trend files for uninterrupted lookback and construcing new PT100 (HAM1) raw minute trends following the upgrade of h0vaclx last Tuesday (17th June 2025).

DAQ Restart

Jonathan, Erik, Patrick, Dave:

Immediately following the restart of h1asc at 11:52, the DAQ was restarted using the following procedure:

1. both trend writers were turned off, allowing raw minute trend file changes on a static system
2. ip_copy_scripts.bsh was ran on both TWs, for each Ion Pump channel which is being renamed, this copied the old file into the correct directory for the new file, preserving recent lookbacks.
3. Erik ran his script to merge the previous HAM1 PT100 data sets into the new channel name.
4. A new H0EPICS_VACLY.ini was generated
5. 0-leg was restarted, followed by a EDC restart on h1susauxb123
6. 1-leg was restarted, requiring a second restart of GDS1.

It was at this late point that I remembered that the temporary H1 version of PT100B is no longer needed, and indeed this channel has no data following the removal of the PT100B Volts channel from h0vacly. However since it is still in the EDC, we need to continue running the temporary IOC until the next DAQ restart. I've removed it from edcumaster.txt as a reminder.

GPS Leap Seconds Updates

Jonathan, Erik, Dave:

Erik's FAMIS task reminded us that the leapseonds files expiration date of 30 June 2025 is rapidly approaching. Although no leap seconds are to be applied, the files need to be updated to reset their expiration dates. Please see Erik and Jonathan's alog for more details.

DNS testing 

Erik:

ns1 (backup DNS server) was used by Erik to see if we can reproduce the error whereby loss of connection to GC caused internal CDS name resolution issues. It did not.

NonSENS 58-60Hz noise injection since Aug 24th 2024

Kiet, Evan, Anamaria 

We noticed that since August 24th, 2024—following the detector maintenance break in O4b—NonSENS has been consistently injecting noise into the 58–60 Hz band.

The ratio of strain after/before cleaning has been tracked via the DetChar summary pages. Attached to this alog are three examples, taken on August 24th, 2024; December 23rd, 2024; and March 31st, 2025. The peak around 58–60 Hz appears to grow over this period, and and remains present after the O4c commissioning break. 

We’ve also attached the NonSENS noise budget for March 31st, 2025. It shows a peak in the jitter noise at 58–60 Hz, which aligns with the band NonSENS has been injecting noise into, so perhaps it is not subtracting jitter correctly? 
 

Updates to h0vacly

Closes WP 12577.

The running code is now at commit 0faf5c4aeb5c61116a5abf0573cb3d09ffdc9e7c in https://git.ligo.org/cds/ifo/beckhoff/lho-vacuum.

This completes the remaining part of the work permit:
"Update the PLC code on h0vacly to pull and use the following changes from git: "Changed the names of the IP23, IP24, and IP25 filter cavity ion pump controllers. Added IPFCC6 and IPFCC8 filter cavity ion pump controllers. Commented out IPFCC6 and IPFCC8. Commented out PT100 as a Pirani and Cold Cathode gauge pair."

After regenerating the TwinCAT 3 solution and running a scan for devices it showed that Box 1, Box 4, PT154 and PT157 had different hardware revisions than they were configured for in the solution. I changed the PowerShell script to make them match, but when I ran it I found that the device driver installed for these gauges did not match the new revision number. I looked on the MKS website for updated drivers, but could not find any drivers at all. I looked back through my emails and found that Chandra had given me the one I currently have, and remembered that she had probably gotten it from the manufacturer directly. The most feasible solution I could think of to do in the time remaining was to revert the revision numbers in the software and run with the mismatch. I don't see any issues at present, and apparently PT154 has been running with the mismatch since it was replaced a while back.

Measuring height of SQZ periscope

Leo Schrader, Camilla Compton, Sheila Dwyer, Jennie Wright

I am trying to build up a mode-matching model for the SQZ to OMC path. Measured the height of periscope closest to -X Side in SQZT7.
Height of periscope base plate measured 5/8 in. D1201011 front plate reported 25 in tall in design documentation.
Top of D1201011 to center of upper periscope mirror measured approx. 63/64 in.

Vertical beam travel in periscope thus computed as 22.61 in (574.3 mm).

Images of ruler measurements are attached.

LVEA swept

There were some cleanroom curtains on HEPI HAM1 that I moved, and there were several ladders that I put away all around, HAM1, 5, 7 and the biergarten.

Updated Open Loop Gain Transfer Functions for H1SUSSRM M1 Damping Loops with All DOFs EPICs gains set to -0.5

J. Kissel

I'm reviewing the state of suspensions' collection of damping loop open loop gain / loop suppression / closed loop gain TF measurements, because we'd like to use the loop suppression to accurately estimate the OSEM sensor noise left over after regressing out the ISI input displacement (much like Valera has done for PR3 in LHO:84277, but he didn't invert the loop suppression). We're doing this so we have "the best we can" metric for when we start to implement ECR E2400330 and improve the whitening within the sat amps to improve the sensor noise between 0.05 and 10 Hz (see CSWG:11249 for a model of the noise improvement). 

I've found that SRM's collection (taken back in 2022 during the upgrade to Level 2.0 filters; LHO:65310 ) had not been updated after the Aug 2023 commissioning efforts that reduced the gain in all DOFs by half, from -1.0 to -0.5 (LHO:72106).

So, I've gathered a new set of open loop gain TFs this morning (from which the loop suppression and closed loop gain TFs come "for free" if you gather the right channels).

The data set has been committed to 
    /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/SRM/SAGM1/Data/
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_L_0p01to100Hz_OpenLoopGainTF.xml
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_P_0p01to100Hz_OpenLoopGainTF.xml
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_R_0p01to100Hz_OpenLoopGainTF.xml
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_T_0p01to100Hz_OpenLoopGainTF.xml
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_V_0p01to100Hz_OpenLoopGainTF.xml
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_Y_0p01to100Hz_OpenLoopGainTF.xml

The references in these templates were updated before each new measurement was taken, so it's a direct comparison between "before" vs. "after" gain reduction on the level 2.0 filters.
It's not terribly surprising that the magnitude of the the open loop gain dropped, but due to the complexity of the unity gain crossings, phase evolution beneath it and the confirmed MIMO nature of the loops, it's never obvious what effect this has on the loop suppression or closed loop gain in the 0.1 to 10 Hz region, thus the remeasure.
For comparison of the loop suppressed plant, P / (1 + G), before vs. after the gain reduction -- see LHO:85277 (note: technically that data also has a switch of basis for transverse, but the consequence on the loop is nil; per that aLOG). 

And for the ease of use, I've exported the loop suppression (A: EXC, B: IN2, to show IN2/EXC = 1 / (1 + G) ), and committed to 
    /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/SRM/SAGM1/Data/
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_L_0p01to100Hz_OLGTF_LoopSuppression_tf.txt
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_P_0p01to100Hz_OLGTF_LoopSuppression_tf.txt
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_R_0p01to100Hz_OLGTF_LoopSuppression_tf.txt
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_T_0p01to100Hz_OLGTF_LoopSuppression_tf.txt
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_V_0p01to100Hz_OLGTF_LoopSuppression_tf.txt
        2025-06-24_1704_H1SUSSRM_M1_WhiteNoise_Y_0p01to100Hz_OLGTF_LoopSuppression_tf.txt

Level 2.0 HSTS damping installed on FC1

I have installed the level 2.0 HSTS damping filters into the FC1 damping bank. I also accepted the changes in SDF.

Here're the templates associated with the open loop gain TFs of FC1's M1 damping loops that Elenna mentions:
    /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/FC1/SAGM1/Data/
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_L_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_P_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_R_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_T_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_V_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-14_2330_H1SUSFC1_M1_CDBIOState_1_WhiteNoise_Y_0p01to100Hz_OpenLoopGainTF_new.xml

HSTS new damping installed on MC1-3

Today I installed Jeff's Level 2 HSTS damping filters on MC1 2 and 3. See alog 65310 as a reference for installation and rearrangement of the filters. I measured the new OLG for all dofs of MC1, and measured both the old and new OLG for all dofs of MC2. See the SusSVN for the OLG measurements.

The new and old filters are set up following the same scheme as we did for the recycling cavity mirrors. The SDFs have been updated for the new locations of the old filters (see attached screenshots).

Once I finished the measurements, I took all three MC damping filters to the new filters, and confirmed the IMC still locks with the new damping filters (yay). After, I reset the MC damping filters to the old filters for the time being. I am leaving the IMC locked overnight (with old damping filters).

Here're the templates for the MC1 and MC2 that Elenna used for these measurements:
/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/
    MC1/SAGM1/Data/
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_L_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_P_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_R_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_T_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_V_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_1900_H1SUSMC1_M1_CDBIOState_1_WhiteNoise_Y_0p01to100Hz_OpenLoopGainTF_new.xml

    MC2/SAGM1/Data/
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_L_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_P_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_R_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_T_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_V_0p01to100Hz_OpenLoopGainTF_new.xml
        2022-10-13_2230_H1SUSMC2_M1_CDBIOState_1_WhiteNoise_Y_0p01to100Hz_OpenLoopGainTF_new.xml

There don't appear to be measurements of MC3's open loop gain TFs.

PR2 and PRM SDF accepted

Following work on other HSTS damping loops, see alog 65310, I updated the PR2 and PRM filter banks with the new damping filters, following the same scheme as SR2 and SRM (new filts in FM1-5 and 10, old filts in FM6-8, BR stays in 9). After making measurements of the OLGTF of PR2 and PRM (saved in SusSVN), I reverted the damping filters back to the old filters and SDFed the change. Reminder: we have rolled the EPICS gains into the "old_gain" filter so now all the dof damping gains should be set to -1. I also reverted the CDBIO State back to 2. I had it switched to 1 for the measurements.

 

Attached is a screenshot of the PRM SDFs accepted. I forgot to screenshot PR2 before confirming, so you will have to take my word for it :)

Here're the open loop gain templates committed to the SVN for PRM and PR2 from this update
    /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/
        PRM/SAGM1/Data/
            2022-10-12_2240_H1SUSPRM_M1_CDBIOState_1_WhiteNoise_L_0p01to100Hz_OpenLoopGainTF_new.xml
            2022-10-12_2240_H1SUSPRM_M1_CDBIOState_1_WhiteNoise_P_0p01to100Hz_OpenLoopGainTF_new.xml
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            2022-10-12_2020_H1SUSPR2_M1_CDBIOState_1_WhiteNoise_Y_0p01to100Hz_OpenLoopGainTF_new.xml