Figure 1 compare the SNEB and SWEB angular control in the past 24h. The SWEB peak-to-peak angular motion and correction are at least 10 times higher than for SNEB.
Figure 2 compare SNEB and SWEB in frequency domain. The local control sensing noise for SWEB is over an order of magnitude higher than for SNEB at high frequency (above 5Hz).
A similar problem has occurred a year ago, and was investigated for two weeks. The series of logbook entries is not completely clear but it seems the problem was resolved by changing the elapsed time in some of the computations of the Pcal https://logbook.virgo-gw.eu/virgo/?r=62484
Figure 3 The same broad peak at ~10kHz is present on SWEB outer coils as a year ago, close to the narrow line used to demodulate the local control error signal.
