Reports until 22:21, Sunday 13 August 2023
H1 DetChar
oli.patane@LIGO.ORG - posted 22:21, Sunday 13 August 2023 (72188)
Comparing 102Hz Peak Pre-LSC FF Ramp Time Adjustment vs After

We've now had two locklosses since Elenna updated the LSC FF filter ramp times (72163) on 8/11 in the hopes of getting rid of the 102Hz peak (72064) that appeared on 8/4 or 8/5, so I checked out the NOLINES plot on the summary pages to see if it had changed anything.

Relocking from both of the locklosses on 8/12 and 8/13, we can still see the line at 102Hz is still there (attachment1), and I plotted some times(attachment2) to more directly see if the change in ramp time had affected the peak at all, but it looks like it didn't.

Images attached to this report