Reports until 15:43, Thursday 29 August 2024
H1 ISC
sheila.dwyer@LIGO.ORG - posted 15:43, Thursday 29 August 2024 (79801)
DRMI + CHARD spectra comparison

Here is a comparison of DRMI and CHARD control signal spectra from July 11th to this afternoon, after Elenna's new HAM1FF. 

The control room FOM seems to indicate that there is some huge excess noise in our DRMI signals, but this comparison shows that isn't the case.  Also, the CHARD control signals are largely similar, with an improvement in pitch which is likely from the HAM1 FF tuning.

Images attached to this report