After adding the "jel" packs last week, it looks like the lower frequency (10mhz-50mhz) noise is better on BRSY. In the first attached plot I compare some 3000 second spectra from Sept 26 2018 ~10:45 utc (before adding the packs) and Oct 15 2018 ~8:00 utc (after all the work done last week). Both of these windows are low wind times. The top plot shows that the RX out asd (ground tilt in nrad/rthz) is lower now with the packs. The second plot compares the tilt subtracted sts and the uncorrected sts asds. The unsubtracted asds are very similar betweeen 10mhz and 50 mhz for both time periods, but the supersensor is lower with the packs.
The .03-.1hz blrms channels for the BRS are also a quick way to evaluate the noise during low wind times. The second attached plot shows zoomed in 20 day time series of the blrms minute trends for both BRSX & Y, and during quiet times BRSY blrms are lower now than they were before adding the packs, BRSX is unchanged. It bears watching, but I saw a similar difference over 50 day trends.
I've added the packs to BRSX now. I'll repeat this there in a week or two. Managed to not bump anything this time. Also, the wire for the capacitive damper is just a single wire directly from the relay box to the can, a little hard to see in the attached photo, but it's on the upper left flange, next to the view port.
