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Reports until 14:07, Tuesday 22 July 2025
H1 SUS
filiberto.clara@LIGO.ORG - posted 14:07, Tuesday 22 July 2025 - last comment - 09:25, Tuesday 29 July 2025(85922)
Top Sat Amps Modified: MC1, MC3, and ETMY (MO, RO, TMS)

WP 12696
ECR E2400330
Drawing D0901284-v5
Modified List T2500232

The following SUS SAT Amps were upgraded per ECR E2400330. Modification improves the whitening stage to reduce ADC noise from 0.05 to 10 Hz. The EY PUM and UIM SAT Amps were NOT upgraded.

Suspension Old New OSEM
ETMY MO S1100098 S1100088 F1F2F3SD
ETMY MO/RO S1100079 S1100083 RTLF/RTLF
ETMY RO S1100087 S1000281 F1F2F3SD
TMSY S1100172 S1100148 F1F2F3LF
TMSY S1100107 S1100172 RTSD
MC1 S1100128 S1100118 T1T2T3LF
MC1/MC3 S1000292 S1000287 RTSD/T1T2
MC3 S1000297 S1100119 T3LFRTSD

F. Clara, J. Kissel, O. Patane, M. Pirello

Comments related to this report
oli.patane@LIGO.ORG - 14:27, Tuesday 22 July 2025 (85924)
Link

Once the new satamps were installed, I ran the script satampswap_bestpossible_filterupdate_ECR_E2400330.py to update the compensation filters for these suspensions. These 'best possible' compensation gains come from the tests Jeff did on each satamp before installation, which are found in /ligo/svncommon/SusSVN/sus/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/.

My input and the corresponding output is below:


oli.patane@cdsws27:/ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools$ py satampswap_bestpossible_filterupdate_ECR_E2400330.py -o TMSY ETMY_M0_R0
All updated filters grabbed for TMSY
TMSY M1 F1 compensation filter updated to zpk([5.3],[0.0969],1,"n")
TMSY M1 F2 compensation filter updated to zpk([5.28],[0.0964],1,"n")
TMSY M1 F3 compensation filter updated to zpk([5.2],[0.095],1,"n")
TMSY M1 LF compensation filter updated to zpk([5.26],[0.096],1,"n")
TMSY M1 RT compensation filter updated to zpk([5.17],[0.0945],1,"n")
TMSY M1 SD compensation filter updated to zpk([5.26],[0.0961],1,"n")
write /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSTMSY.txt
Done writing updated filters for TMSY

All updated filters grabbed for ETMY
ETMY R0 F1 compensation filter updated to zpk([5.2],[0.0951],1,"n")
ETMY R0 F2 compensation filter updated to zpk([5.2],[0.0951],1,"n")
ETMY R0 F3 compensation filter updated to zpk([5.25],[0.0959],1,"n")
ETMY R0 SD compensation filter updated to zpk([5.35],[0.098],1,"n")
ETMY M0 F1 compensation filter updated to zpk([5.31],[0.0971],1,"n")
ETMY M0 F2 compensation filter updated to zpk([5.27],[0.0965],1,"n")
ETMY M0 F3 compensation filter updated to zpk([5.22],[0.0955],1,"n")
ETMY M0 SD compensation filter updated to zpk([5.17],[0.0946],1,"n")
ETMY M0 LF compensation filter updated to zpk([5.2],[0.0951],1,"n")
ETMY M0 RT compensation filter updated to zpk([5.28],[0.0965],1,"n")
ETMY R0 LF compensation filter updated to zpk([5.29],[0.0967],1,"n")
ETMY R0 RT compensation filter updated to zpk([5.26],[0.0962],1,"n")
write /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSETMY.txt
Done writing updated filters for ETMY

All done! Remember to double check and load in the filters for ['TMSY', 'ETMY_M0_R0']

oli.patane@cdsws27:/ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools$ py satampswap_bestpossible_filterupdate_ECR_E2400330.py -o MC1 MC3
All updated filters grabbed for MC1
MC1 M1 RT compensation filter updated to zpk([5.13],[0.0937],1,"n")
MC1 M1 SD compensation filter updated to zpk([5.25],[0.096],1,"n")
MC1 M1 T1 compensation filter updated to zpk([5.26],[0.0962],1,"n")
MC1 M1 T2 compensation filter updated to zpk([5.18],[0.0947],1,"n")
MC1 M1 T3 compensation filter updated to zpk([5.32],[0.0972],1,"n")
MC1 M1 LF compensation filter updated to zpk([5.12],[0.0938],1,"n")
write /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSMC1.txt
Done writing updated filters for MC1

All updated filters grabbed for MC3
MC3 M1 T3 compensation filter updated to zpk([5.32],[0.0972],1,"n")
MC3 M1 LF compensation filter updated to zpk([5.19],[0.0949],1,"n")
MC3 M1 RT compensation filter updated to zpk([5.35],[0.0979],1,"n")
MC3 M1 SD compensation filter updated to zpk([5.19],[0.0949],1,"n")
MC3 M1 T1 compensation filter updated to zpk([5.31],[0.097],1,"n")
MC3 M1 T2 compensation filter updated to zpk([5.24],[0.0958],1,"n")
write /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSMC3.txt
Done writing updated filters for MC3

All done! Remember to double check and load in the filters for ['MC1', 'MC3']

After this I loaded in these new filters.

jeffrey.kissel@LIGO.ORG - 15:40, Monday 28 July 2025 (86037)
Link 

The serial numbers in Fil's and OLD and NEW columns are flip flopped in the main aLOG, LHO:85922.

Here's the corrected version with the serial number's columns flipped to reflect reality.

Suspension	Old         New	           OSEM
ETMY MO	        S1100088    S1100098       F1F2F3SD

ETMY MO/RO	S1100083    S1100079       RTLF/RTLF

ETMY RO	        S1000281    S1100087       F1F2F3SD

TMSY	        S1100148    S1100172       F1F2F3LF

TMSY	        S1100172    S1100107       RTSD

MC1	        S1100118    S1100128       T1T2T3LF

MC1/MC3	        S1000287    S1000292       RTSD/T1T2

MC3	        S1100119    S1000297       T3LFRTSD
jeffrey.kissel@LIGO.ORG - 15:47, Monday 28 July 2025 (86038)
Link 

Here's the characterization data and fit results for  S1100098 , assigned to ETMY M0's F1F2F3SD OSEMs (Fil refers to this as ETMY MO F1F2F3SD above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100098_ETMY_M0_F1F2F3SD_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
ETMY     M0       S1100098         CH1                F1           0.0971:5.31     120           zpk([5.31],[0.0971],1,"n")
                                   CH2	              F2           0.0965:5.27     120           zpk([5.27],[0.0965],1,"n")
                                   CH3	              F3           0.0955:5.22     120           zpk([5.22],[0.0955],1,"n")
                                   CH4	              SD           0.0946:5.17     120           zpk([5.17],[0.0946],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm, as it's not used in the compensation filter -- but also because the magnitude of the measurements didn't need me to adjust them; I was able to get a good phase and magnitude fit by just adjusting the zero frequency.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 15:51, Monday 28 July 2025 (86039)
Link 

Here's the characterization data and fit results for  S1100079 , assigned to ETMY M0/R0's LFRT/LFRT OSEMs (Fil refers to this as ETMY MO/RO RTLF/RTLF above -- note his typo in channel order).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100079_ETMY_M0R0_LFRTLFRT_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
ETMY     M0       S1100079	   CH1                LF           0.0951:5.20     120           zpk([5.20],[0.0951],1,"n")
         M0                        CH2                RT           0.0965:5.28     120           zpk([5.28],[0.0965],1,"n")
         R0                        CH3                LF           0.0967:5.29     120           zpk([5.29],[0.0967],1,"n")
         R0                        CH4                RT           0.0962:5.26     120           zpk([5.26],[0.0962],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm, as it's not used in the compensation filter -- but also because the magnitude of the measurements didn't need me to adjust them; I was able to get a good phase and magnitude fit by just adjusting the zero frequency.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 15:56, Monday 28 July 2025 (86040)
Link 

Here's the characterization data and fit results for  S1100087 , assigned to ETMY R0's F1F2F3SD OSEMs (Fil refers to this as ETMY RO F1F2F3SD above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100087_ETMY_R0_F1F2F3SD_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
ETMY     R0       S1100087         CH1                F1           0.0951:5.20     120           zpk([5.20],[0.0951],1,"n")
                                   CH2                F2           0.0951:5.20     120           zpk([5.20],[0.0951],1,"n")
                                   CH3                F3           0.0959:5.25     120           zpk([5.25],[0.0959],1,"n")
                                   CH4                SD           0.0980:5.35     120           zpk([5.35],[0.0980],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm, as it's not used in the compensation filter -- but also because the magnitude of the measurements didn't need me to adjust them; I was able to get a good phase and magnitude fit by just adjusting the zero frequency.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 08:38, Tuesday 29 July 2025 (86053)
Link 

Here's the characterization data and fit results for  S1100172 , assigned to TMSY M1's F1F2F3LF OSEMs (Fil refers to this as TMSY F1F2F3LF above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100172_TMSY_M1_F1F2F3LF_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
TMSY     M1       S1100172         CH1                F1           0.0969:5.30     120           zpk([5.30],[0.0969],1,"n")
                                   CH2                F2           0.0964:5.28     120           zpk([5.28],[0.0964],1,"n")
                                   CH3                F3           0.0950:5.20     120           zpk([5.20],[0.0950],1,"n")
                                   CH4                LF           0.0960:5.26     120           zpk([5.26],[0.0960],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 08:42, Tuesday 29 July 2025 (86054)
Link 

Here's the characterization data and fit results for  S1100107 , assigned to TMSY M1's RTSDxxxx OSEMs (Fil refers to this as TMSY RTSD above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100107_TMSY_M1_RTSDxxxx_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
TMSY     M1       S1100107         CH1                RT           0.0945:5.17     120           zpk([5.17],[0.0945],1,"n")
                                   CH2                SD           0.0961:5.26     120           zpk([5.26],[0.0961],1,"n")
                                   CH3                xx           0.0956:5.23     120           zpk([5.23],[0.0956],1,"n")
                                   CH4                xx           0.0957:5.24     120           zpk([5.24],[0.0957],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 09:14, Tuesday 29 July 2025 (86055)
Link 

Here's the characterization data and fit results for  S1100128 , assigned to MC1 M1's T1T2T3LF OSEMs (Fil refers to this as MC1 T1T2T3LF above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1100128_MC1_M1_T1T2T3LF_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
Optic    Stage    Serial_Number    Channel_Number     OSEM_Name    Zero_Pole_Hz    R_TIA_kOhm    Foton_Design
MC1      M1       S1100128         CH1                T1           0.0962:5.26     120           zpk([5.26],[0.0962],1,"n")
                                   CH2                T2           0.0947:5.18     120           zpk([5.18],[0.0947],1,"n")
                                   CH3                T3           0.0972:5.32     120           zpk([5.32],[0.0972],1,"n")
                                   CH4                LF           0.0938:5.12     120           zpk([5.12],[0.0938],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 09:19, Tuesday 29 July 2025 (86057)
Link 

Here's the characterization data and fit results for  S1000292 , assigned to MC1/MC3 M1's RTSD/T1T2 OSEMs (Fil refers to this as MC1/MC3 RTSD/T1T2 above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1000292_MC1MC3_M1_RTSDT1T2_20250717.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
MC1      M1       S1000292         CH1                RT           0.0937:5.13     120           zpk([5.13],[0.0937],1,"n")
MC1      M1                        CH2                SD           0.0960:5.25     120           zpk([5.25],[0.0960],1,"n")
MC3      M1                        CH3                T1           0.0970:5.31     120           zpk([5.31],[0.0970],1,"n")
MC3      M1                        CH4                T2           0.0958:5.24     120           zpk([5.24],[0.0958],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm.
Non-image files attached to this comment
jeffrey.kissel@LIGO.ORG - 09:25, Tuesday 29 July 2025 (86058)
Link 

Here's the characterization data and fit results for  S1000297 , assigned to MC3 M1's T3LFRTSD OSEMs (Fil refers to this as MC3 T3LFRTSD above).
The data was taken per methods described in T080062-v3.
The data was processed and fit using 
    ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
         plotresponse_S1000297_MC3_M1_T3LFRTSD_20250721.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are
MC3      M1       S1000297         CH1                T3           0.0972:5.32     120           zpk([5.32],[0.0972],1,"n")
                                   CH2                LF           0.0949:5.19     120           zpk([5.19],[0.0949],1,"n")
                                   CH3                RT           0.0979:5.35     120           zpk([5.35],[0.0979],1,"n")
                                   CH4                SD           0.0949:5.19     120           zpk([5.19],[0.0949],1,"n")
  
The attached plot and machine readable .txt file version of the above table are also found in
${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/

As LHO:85626 and the above LHO:86028 discusses, R_TIA_kOhm is the default 120 kOhm.
Non-image files attached to this comment
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