Originally, the suspensions who have already had their satamps swapped for ECR E2400330 had their compensation filters updated to a generic 5.31:0.0969 zp filter that would get put in using my script /ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools/satampswap_generic_filterupdate_ECR_E2400330.py (r12449).
However, Jeff went through the entire set of new satamps and tested each channel to determine the actual transimpedance and frequency response of each channel. We can use the measured frequency response to replace the generic filter with more precise compensation filters, so I have made a script that does just that - it updates the compensation filters in OSEMINF FM1 for whichever suspension you want with the more accurate zero and pole values for each channel. This script can be found at /ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools/satampswap_bestpossible_filterupdate_ECR_E2400330.py (r12449).
I have used this script to update the compensation filters for the suspensions that have already had their satamps swapped (see txt file): SR3, SRM, BS, PRM, PR3, ITMX, ITMY, SR2. These new filters have all been loaded in.
Running the Best Possible Filter Update Script
This script can be found at /ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools/satampswap_bestpossible_filterupdate_ECR_E2400330.py. To run it, all you need to do is:
- Make sure the txt measurement files exist for that optic in /ligo/svncommon/SusSVN/sus/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/
- In the PythonTools directory, do python3 satampswap_bestpossible_filterupdate_ECR_E2400330.py -o (or --opt), followed by the name of the optic or optics. If updating for multiple optics at once, put a space between each
- Once the txt filter file has been updated, you must then go to the suspension's GDS screen to check the filter diffs and load in the new filters. Before loading in the new filters, make sure we are in DOWN and put the suspension into SAFE
Examples:
python3 /ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools/satampswap_bestpossible_filterupdate_ECR_E2400330.py --opt SR2
Or to update multiple suspensions at once:
python3 /ligo/svncommon/SusSVN/sus/trunk/Common/PythonTools/satampswap_bestpossible_filterupdate_ECR_E2400330.py -o SR2 ITMX PRM
Running the Generic Filter Update Script
In case the measurements aren't done but you would like to update the compensation filters, you can use the generic filter script, satampswap_generic_filterupdate_ECR_E2400330.py. To run this script:
- In the PythonTools directory, do python3 satampswap_bestpossible_filterupdate_ECR_E2400330.py -o (or --opt), followed by the name of the optic or optics. If updating for multiple optics at once, put a space between each
- Once the txt filter file has been updated, you must then go to the suspension's GDS screen to check the filter diffs and load in the new filters. Before loading in the new filters, make sure we are in DOWN and put the suspension into SAFE
