elenna.capote@LIGO.ORG - posted 14:26, Thursday 22 June 2023 - last comment - 10:31, Monday 26 June 2023(70734)
Soft loop gains updated
The CSOFT P gain has been returned to 20, which is nominal for 60W. Trending back to our 60W configuration, we ran with DSOFT P gain of 2.5 and DSOFT Y gain of 5. These gains were raised to 20 each with the power up to 76W to improve stability. I have reduced these gains to 10. This should reduce any residual DSOFT coupling to DARM. I think we can operate with the even lower gains, but I want to be able to see a few more locks to confirm we are stable in the ASC before dropping those gains further.
This is updated in the guardian and observe SDF.
I have lowered the DSOFT gains again by half so they are now both 5. This is 60W nominal for DSOFT Y, but still twice 60W nominal for DSOFT P (was 2.5). This is SDFed and updated in the guardian.