Related logs, 31303, 31371, 31403
Jeff, Kiwamu,
We have copied the actuator function plotting script from LLO and adopted for LHO. The code seems to run fine. It resides at
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/ER10/H1/Scripts/FullIFOActuatorTFs/actuatorCoefficients.m
The attached are the resulting pdf showing the three sets of measurements that Jeff took in the past few days. I did not do fittin yet. Below are several notes
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We have incorported the correction factors for the actuator functions (31369).
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They are directly writen in the interferometer dependent paramter file at
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/ER10/H1/params/H1params.conf
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They are directly writen in the interferometer dependent paramter file at
- We are reminded that there is significant discrepancy between the measured and model in UIM at high frequencies (24197)
- TST and PUM seem fine both in magnitude and phase.
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We switched the suspension tag model
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from
quadmodelproduction-rev7995_ssmake4pv2eMB5f_fiber-rev3601_h1etmy-rev7915_released-2016-06-15.mat -
to
quadmodelproduction-rev7995_ssmake4pv2eMB5f_fiber-rev3601_h1etmy-rev7915_released-2016-03-01.mat
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from
- However, in doing so, Jeff found what appears to be a bug in the suspension model which can impact on low frequency suspension resonances around 1 Hz. He is working on this at the moment.
Jeff K, Darkhan T,
Modified Kiwamu's script to save the measured actuation transfer functions - which will be used to fit the actuation function parameters (currently written in Python). The results include TFs from Nov 07, 08, 10 and 12. The Nov 12 measurements were added to the previously reported three sets (see LHO alog 31433).
The script also saves the [N/ct] actuation coefficients into a separate set of *.txt files (frequency independent), this can simplify fitting a single parameter - actuation strength for each of the stages.
The clean transfer function *.txt files were uploaded to CalSVN at (files with postscript N2ct have [N/ct] gain values):
${CalSVN}/Runs/ER10/H1/Measurements/FullIFOActuatorTFs/${date}_coefs/*Actuation_measurement.txt
${CalSVN}/Runs/ER10/H1/Measurements/FullIFOActuatorTFs/${date}_coefs/*Actuation_measurement_Npct.txt
The script that generated the txt files was placed here:
${CalSVN}/Runs/ER10/H1/Scripts/FullIFOActuatorTFs/actuatorCoefficients_Npct.m