Francisco, Tooba,  and I went to EY today to do an End Y PCAL End Station measurement.

We followed the Procedure outlined in T1500062-v19. 
Beamspot before we started

Ran the following script & the out put follows:
(pcal_env) anthony.sanchez@cdsws31: python generate_measurement_data.py --WS PS4 --date 2025-07-21
/ligo/gitcommon/Calibration/pcal/O4/ES/scripts/pcalEndstationPy/generate_measurement_data.py:52: SyntaxWarning: invalid escape sequence '\R'
  log_entry = f"{current_time} {command} \Results found here\: {results_path}\n"
Reading in config file from python file in scripts
../../../Common/O4PSparams.yaml
PS4 rho, kappa, u_rel on 2025-07-21 corrected to ES temperature 299.2 K :
-4.702207423037734 -0.0002694340454223 3.166921849830658e-05
Copying the scripts into tD directory...
Connected to nds.ligo-wa.caltech.edu
martel run
reading data at start_time:  1437237350
reading data at start_time:  1437237810
reading data at start_time:  1437238140
reading data at start_time:  1437238500
reading data at start_time:  1437238870
reading data at start_time:  1437239200
reading data at start_time:  1437239330
reading data at start_time:  1437240000
reading data at start_time:  1437240340
Ratios: -0.5346791724911457 -0.543267360018835
writing nds2 data to files
finishing writing
Background Values:
bg1 =        18.235622; Background of TX when WS is at TX
bg2 =        5.180516; Background of WS when WS is at TX
bg3 =        18.271548; Background of TX when WS is at RX
bg4 =        5.304736; Background of WS when WS is at RX
bg5 =        18.324199; Background of TX
bg6 =        -0.468829; Background of RX

The uncertainty reported below are Relative Standard Deviation in percent

Intermediate Ratios
RatioWS_TX_it      = -0.534679;
RatioWS_TX_ot      = -0.543267;
RatioWS_TX_ir      = -0.527180;
RatioWS_TX_or      = -0.534309;
RatioWS_TX_it_unc  = 0.063072;
RatioWS_TX_ot_unc  = 0.066352;
RatioWS_TX_ir_unc  = 0.058208;
RatioWS_TX_or_unc  = 0.055534;
Optical Efficiency
OE_Inner_beam                      = 0.986071;
OE_Outer_beam                      = 0.983489;
Weighted_Optical_Efficiency        = 0.984780;

OE_Inner_beam_unc                  = 0.047991;
OE_Outer_beam_unc                  = 0.047969;
Weighted_Optical_Efficiency_unc    = 0.067854;

Martel Voltage fit:
Gradient      = 1637.880346;
Intercept     = 0.388593;

 Power Imbalance = 0.984192;

Endstation Power sensors to WS ratios::
Ratio_WS_TX                        = -0.927690;
Ratio_WS_RX                        = -1.383303;

Ratio_WS_TX_unc                    = 0.053210;
Ratio_WS_RX_unc                    = 0.043963;

=============================================================
============= Values for Force Coefficients =================
=============================================================

Key Pcal Values :
GS           =      -5.135100; Gold Standard Value in (V/W)             
WS           =      -4.702207; Working Standard Value             

costheta     =      0.988362; Angle of incidence
c            =      299792458.000000; Speed of Light
             
End Station Values :
TXWS         =        -0.927690; Tx to WS Rel responsivity (V/V)
sigma_TXWS   =        0.000494; Uncertainity of Tx to WS Rel responsivity (V/V)
RXWS         =        -1.383303; Rx to WS Rel responsivity (V/V)
sigma_RXWS   =        0.000608; Uncertainity of Rx to WS Rel responsivity (V/V)

e            =        0.984780; Optical Efficiency
sigma_e      =        0.000668; Uncertainity in Optical Efficiency

Martel Voltage fit :
Martel_gradient         =        1637.880346; Martel to output channel (C/V)
Martel_intercept   =        0.388593; Intercept of fit of     Martel to output (C/V)

Power Loss Apportion :
beta          =        0.998844; Ratio between input and output (Beta)  
E_T          =        0.991787; TX Optical efficiency
sigma_E_T          =        0.000336; Uncertainity in TX Optical efficiency
E_R          =        0.992935; RX Optical Efficiency
sigma_E_R          =        0.000337; Uncertainity in RX Optical efficiency

Force Coefficients :
FC_TxPD          =        9.152859e-13; TxPD Force Coefficient
FC_RxPD          =        6.233084e-13; RxPD Force Coefficient
sigma_FC_TxPD          =        5.803098e-16; TxPD Force Coefficient
sigma_FC_RxPD          =        3.482293e-16; RxPD Force Coefficient
data written to ../../measurements/LHO_EndY/tD20250722/

This produced:
Martel_Voltage_test.png
WS_at_TX.png
WS_at_RX.png
WS_at_RX_BOTH_BEAMS.png
These dont look unreasonable, so we ran the End station trends report script to give us the LHO_EndY_PD_ReportV5.pdf.

[Matt, Jenne, Elenna]

Matt and I tried running a new jitter training on CALIB STRAIN CLEAN, and noticed that we could likely subtract a bit more jitter noise from CLEAN, and also probably reinject less noise, especially around the power lines. We then reran a training on NOLINES to prepare to apply the new cleaning today.

Jenne then walked me through how to generate the script which would update the cleaning parameters. I copied over the old observe.snap file, in case I made a mistake and need to revert to the old coefficients.

Once we were in observing, I ran Jenne's template which checks how the cleaning is performing. It definitely looks like it is doing a good job. I accepted the new parameters. Once we are locked for a little longer, I will generate some comparison plots to the old cleaning parameters.

Ivey used the ISO calibration measurements that I took earlier (85906) to calculate what the OSEMINF gains should be on SR3 (85907), and this script also calculates what it thinks the compensation gain in the DAMP filter bank should be.
The next step is to use OLG TFs to measure what values we would use in the DAMP filter bank to compensate for the change in OSEMINF gains, and we can compare them to the calculated values to see how close they are.

I took two sets of OLG measurements for SR3:
- a set with the nominal OSEMINF gains
    T1: 1.478
    T2: 0.942
    T3: 0.952
    LF: 1.302
    RT: 1.087
    SD: 1.290
- a set with the OSEMINF gains changed to the values in 85907
    T1: 3.213
    T2: 1.517
    T3: 1.494
    LF: 1.733
    RT: 1.494
    SD: 1.793

Measurement settings:
- SR3 in HEALTH_CHECK but with damping loops on
- SR3 damping nominal (all -0.5)
- HAM5 in ISOLATED

Nominal gain set:
/ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/SR3/SAGM1/Data/2025-07-22_1700_H1SUSSR3_M1_WhiteNoise_{L,T,V,R,P,Y}_0p02to50Hz_OpenLoopGainTF.xml r12478

New gain set:
/ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/SR3/SAGM1/Data/2025-07-22_1800_H1SUSSR3_M1_WhiteNoise_{L,T,V,R,P,Y}_0p02to50Hz_OpenLoopGainTF.xml r12478

Once I had taken these measurements, I exported txt files for each dof's OLG and used one of my scripts, /ligo/svncommon/SusSVN/sus/trunk/HLTS/Common/MatlabTools/divide_traces_tfs.m to plot the OLG for each dof to compare the traces between OSEMINF gain differences and then divide the traces and grab an average of that, which will be the compensation gain put in as a filter in the DAMP filter bank (plots). The values I got for the compensation gains are below:
    L: 0.740
    T: 0.732
    V: 0.548
    R: 0.550
    P: 0.628
    Y: 0.757

 These are pretty similar to what my script had found them to be last time before the satamp swap (85288), as well as being very similar to the values that Ivey's script had calculated.
Maybe the accuracy from Ivey's script means that in the future we don't need to run the double sets of OLG transfer functions and can jsut use the values that the script gives.

Leo, Jennie, Camilla, WP 12694

Jennie followed instructions for set up in 85775. We removed the SQZ beam iris at the bottom of the LPM (added for alignment capture during OFI vent work). Then took beam profiles in this SQZ path of the SEED beam with various PSAMS settings, adjusted PSAMS settings as in 85775 and used the servo for nominal settings. All data is attached. Jennie then reverted settings back to nominal.

I did  a sweep of the LVEA & found Camilla and Jennie W working on the Squeeze tables. Then needed 10-15 more minutes and ensured me that they'd turn off the lights once they were done making sure the Squeezer was Squoze.

 

We replaced the following supplies this maintenance period:

Mezannine in CER:
VDD-C5-U30 RHS -24 Digital S1201957 replaced with upgraded supply S1202024 per WP12688
VDD-C6-U42 RHS HAM6 OMC PZT HV Power Supply 110V 80mA replaced with HV spare supply due to unexplained tripping of original supply per WP12704

We also staged upgraded replacement supplies 4x in the CER Mezannine, 2x at EY, and 2x at EX.

F. Clara, M. Pirello, E. vonReis

Procedure checklist for both stations completed.  No issues were identified at this time.

MY: Scroll pump hours: 89
       Turbo pump hours: 226
       Crash bearings: 100%

EY: Scroll pump hours: 88
       Turbo pump hours: 1295
       Crash bearings: 100%

Tue Jul 22 10:09:18 2025 INFO: Fill completed in 9min 14secs

Gerardo confirmed a good fill curbside.

Chris and I greased the fan bearings for the VEA spaces and alternated the fans. This has resulted in abnormalities in the temperature trending, but these changes will even out after a short period. 

OSEM calibration of H1:SUS-SR3
Stage: M1
2025-07-22_1530 (UTC).

The suggested (calibrated) M1 OSEMINF gains are
(new T1) = 2.174 * (old T1) = 3.213 
(new T2) = 1.610 * (old T2) = 1.517 
(new T3) = 1.569 * (old T3) = 1.494 
(new LF) = 1.331 * (old LF) = 1.733 
(new RT) = 1.374 * (old RT) = 1.494 
(new SD) = 1.390 * (old SD) = 1.793 

To compensate for the OSEM gain changes, we estimate that the H1:SUS-SR3_M1_DAMP loops must be changed by factors of: 
L gain = 0.740 * (old L gain)
T gain = 0.719 * (old T gain)
V gain = 0.545 * (old V gain)
R gain = 0.545 * (old R gain)
P gain = 0.629 * (old P gain)
Y gain = 0.740 * (old Y gain)

The calibration will change the apparent alignment of the suspension as seen by the at the M1 OSEMs
NOTE: The actual alignment of the suspension will NOT change as a result of the calibration process

The changes are computed as (osem2eul) * gain * inv(osem2eul).
Using the alignments from 2025-07-22_1530 (UTC) as a reference, the new apparent alingments are:

DOF        Previous value       New value            Apparent change
---------------------------------------------------------------------------------
L          -5.0 um              -3.1 um                 +1.8 um
T          -21.6 um             -15.5 um                +6.1 um
V           11.8 um              9.8 um                 -2.0 um
R          -576.3 urad          -327.5 urad          +248.9 urad
P          -266.5 urad          -158.3 urad          +108.2 urad
Y          -585.0 urad          -431.9 urad          +153.1 urad

We have estimated a OSEM calibration of H1 SR3 M1 using HAM5 ST1 drives from 2025-05-21_0000 (UTC).
We fit the response M1_DAMP/HAM5_SUSPOINT between 5 and 15 Hz to get a calibration in [OSEM m]/[GS13 m]

This message was generated automatically by OSEM_calibration_SR3.py on 2025-07-22 16:24:05.000267+00:00 UTC

%%%%%%%%%%%%%%%%%%%%%%%%%%%% 


EXTRA INFORMATION 

The H1:SUS-SR3_M1_OSEMINF gains at the time of measurement were:
(old) T1: 1.478 
(old) T2: 0.942 
(old) T3: 0.952 
(old) LF: 1.302 
(old) RT: 1.087 
(old) SD: 1.290 

The matrix to convert from the old Euler dofs to the (calibrated) new Euler dofs is:

+0.74	-0.0	+0.0	-0.0	+0.0	-0.001
+0.0	+0.719	-0.0	+0.0	+0.0	-0.0
-0.0	+0.0	+0.545	-0.006	+0.0	+0.0
+0.0	+0.0	-1.209	+0.545	-0.003	-0.0
+0.0	+0.0	+0.18	-0.013	+0.629	-0.0
-0.148	+0.0	-0.0	+0.0	-0.0	+0.74

The matrix is used as (M) * (old EUL dof) = (new EUL dof)
The dof ordering is ('L', 'T', 'V', 'R', 'P', 'Y')

Please see the attached images of before calibrating and after calibrating.

WP 12690

Gerardo M., Patrick T.

"Update the PLC code on h0vacmr to reflect the current cabling of IP13 to Beckhoff terminal 25, channels 3 and 4."

This work permit has been completed. The code is now at commit efc3db6abdaf3f286903a874e7f765e9d867f9f9. There are no issues to report.

This is part of the work we are doing for the Estimator. As part of that work, we are finetuning the OSEMINF gains, which we did previously for SR3 (84298), but since we've swapped the satamps we want to check how different these new values will be compared to the current gains as well as the gains we found that last time.

I ran excitations through the H1:ISI-HAM5_ISO_{X,Y,Z} filter banks with the settings of:

• HAM5 in ISOLATED
• SR3 in ALIGNED (or in HEALTH_CHECK with damping turned back on - the alignment sliders being on or off doesn't make a difference)
• SR3 M1 gains all -0.1

Measurements can be found at /ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/SR3/Common/Data/2025-07-22_1530_H1ISIHAM5_ST1_WhiteNoise_ISO_{X,Y,Z}_0p05to40Hz_calibration.xml, svn revision r12476.

As per WP 12691 we moved the CDS/GC connection off of a temporary switch.  This is a follow up to WP 12580 which had left us on a temporary switch.  The new switch is a larger switch and all the phones can be plugged in now.

TITLE: 07/22 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 2mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY: Locked for 9 hours, magnetic injections currently running. Long list of planned maintenance today, see the Trello for more details.

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

TITLE: 07/22 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY:
Every thing was locked and humming along until the sudden lockloss from the 6.5M Earthquake off coast of Russia.
Held in Down for ~2.5 hours while the Earth rang down.
Ran an Initial Alignment and H1 is currently at CARM_OffSET reduction.
Wind is vey low, ground motion has dropped should be a good night of locked IFO.
LOG:
No Log

@ 02:08:55 UTC Known Lockloss caused by a 6.5M Earthquake. I'm using the GEOFON site because USGS took ~ 10 min to report the quake.
Earthquake mode was activated, then less than 30 seconds later we were unlocked.
No earthquake was listed as incoming, Picket fence was lit up and had active ground motion.
 

After last week's satamp changes (85770), the compensation filters found in the OSEMINF filter bank for MC2, PR2, TMSX, and ETMX M0/R0/L1 were all updated to a generic compensation filter of 5.31:0.0969. I have now updated those filters based on the experimental measurements Jeff got for each satamp's channel (the same as what I did in 85746).

To update the compensation filters, I used the newest version of my script satampswap_bestpossible_filterupdate_ECR_E2400330.py, svn revision r12475. This newest version of the code allows you to specify which stage you want to update, if you aren't wanting to update every stage listed in the txt files. Here is a txt file of my inputs and the corresponding outputs for the lines of code that I ran.

I have loaded these more accurate filters in for these suspension/stages.

TITLE: 07/21 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 15mph Gusts, 12mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:
H1 is currently Locking at Move.
Secondary microseism looks to be falling.
All systems look great.

Brushfire look out was done by Oli today, who said... "No fires today."
Roof pictures attached.