Reports until 14:12, Monday 24 November 2025
H1 CAL
elenna.capote@LIGO.ORG - posted 14:12, Monday 24 November 2025 (88222)
Updated calibration to account for kappa C change, 20251115T213724Z

Kappa C has been high by 3% since Sheila updated the power normalization. This is accounted for in the TDCFs, but makes CAL DELTAL calibration >10% in magnitude and will make it harder to understand how kappa C has changed when we come back form the vent. To make our lives easier, I pushed the calibration report 20251115T213724Z.

I followed the usual process of taking a broadband before and after the push. I have loaded the CAL CS model and accepted the new SDFs in observing.

As expected, this has a minimal effect on the GDS uncertainty (because of TDCFs), but has made a large improvement in CAL DELTA L uncertainty.

Images attached to this report