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Reports until 11:56, Monday 11 November 2019
H1 CAL (CAL)
sudarshan.karki@LIGO.ORG - posted 11:56, Monday 11 November 2019 (53155)
Updated QUAD model and suspension filter files for Pcal

Vlad, S. Karki

We have generated the new suspension model tags for both ETMs  with the updated mass for O3 (LHO alog #49398), updated violin mode frequencies (updated by Rahul).  The parameters files can be found here:

svn/sus/trunk/QUAD/Common/MatlabTools/QuadModel_Production/h1etmx_options.m

svn/sus/trunk/QUAD/Common/MatlabTools/QuadModel_Production/h1etmy_options.m

svn/sus/trunk/QUAD/Common/MatlabTools/QuadModel_Production/h1etmx.m

svn/sus/trunk/QUAD/Common/MatlabTools/QuadModel_Production/h1etmy.m

The script used to genrate these new tags and the tagged models for each ETMs can be found at the following location:

svn/sus/trunk/Common/MatlabTools/tagsusdynamicalmodel.m

svn/sus/trunk/Common/SusModelTags/Matlab/quadmodelproduction-rev9308_ssmake4pv2eMB5f_fiber-rev8442_h1etmx-rev9880_h1etmx_options-rev9876_released-2019-11-06.mat

svn/sus/trunk/Common/SusModelTags/Matlab/quadmodelproduction-rev9308_ssmake4pv2eMB5f_fiber-rev8442_h1etmx-rev9880_h1etmy_options-rev9876_released-2019-11-06.mat

We have used these newly generated tagged suspenion models to create suspension filter files for both PCALX and PCALY. The newly generated filters differ from the filters currently in the PCAL systems by the amount equal to the change in mass of the ETMs between O2 and O3. This is reflected in the attached plot #1 (PCALX) and #3 (PCALY). Remember, the masses were not updated in the Pcal model during O3A resulting in a small systematic error and the Pcal force coefficient were fudged during the beginning of O3B to reflect the mass change. Once these updated filters are installed, the fudge factor in the Pcal force coefficient will also be removed. Attached plots #2 and #4 make comparison between the new filters to be installed and the MATLAB suspension model filters. They agree  with each other at 0.005 % (0.5 hop) level at 100 Hz.

The script used to generate these new filters can be found here:

svn/aligocalibration/trunk/Runs/O3/H1/Scripts/PCAL/checkQuackSUSPcal.m

We plan to install these filters with updated PCAL Simulink model and new MEDM screen during tomorrow's maintenance.

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