Reports until 11:00, Monday 01 April 2019
H1 DetChar
evan.goetz@LIGO.ORG - posted 11:00, Monday 01 April 2019 (48110)
Weekly Fscan helping to reveal/track combs in sub-100 Hz band
The weekly Fscan is helping to reveal additional comb structure in the H1 data. Similar to the analysis for one day of data late last week (see LHO aLOG 48046), I used the weekly cumulative Fscan to try and find additional combs.

I repeated the procedure, but this time used the weekly Fscan of March 30 (see here).

Attached is the weekly Fscan showing marked known combs that are currently tracked 0.996795 Hz with 0 Hz offset, 1 Hz with 0 Hz offset, and 1 Hz with 0.5 Hz offset; the two combs I found late last week 5.048889 Hz with 3.365555 Hz offset and 11.394444 Hz with 0 Hz offset; and now one additional comb 0.985915 Hz with 0 Hz offset.

Images attached to this report