camilla.compton@LIGO.ORG - posted 17:09, Friday 16 December 2022 - last comment - 14:36, Monday 19 December 2022(66429)
Scheduled CO2 power stepper starting 6:30pm tonight. Will stop if IFO not in NLN.
Will step CO2 powers while IFO is locked this evening to repeat Dan's measurements now we are locked at 60W.
Scheduled to start:
- CO2X at 6:30pm PT (2022-12-17 02:30UTC) power_list = [3, 3.5, 4, 3, 2.5, 2, 1.5, 1, 2, 3] changing every 40 minutes
- CO2Y at 10:30pm (2022-12-17 06:30UTC) with power_list = [1, 1.5, 2, 2.5, 3, 2, 1, 0.5, 0, 1.3] changing every 40 minutes
- There will be some overlap.
This will stop if IFO is not in NLN. ISC_LOCK will take CO2s back to outputting zero if lockloss occurs.
Running from a tmux session on zotws19.
python3 opt/rtcds/userapps/release/tcs/common/scripts/power_adj_scripts/co2_power_stepper.py ITMX -s 1355279418
python3 opt/rtcds/userapps/release/tcs/common/scripts/power_adj_scripts/co2_power_stepper.py ITMY -s 1355293818
Some results!
The test was only able to complete the CO2X steps, as going down in CO2X power definitely put the IFO in a state it did not like. Going up in power seemed to have a very small positive effect. I have attached a screenshot with CO2 powers, PRG and circulating arm powers.
Here is another version of the plot (hopefully more readable) that also includes the ADS and CFTD factors requested.
This is also a nice ndscope template for future tests so I have saved it in userapps tcs/h1/templates/ndscope/TCS_stepper.yaml