Yesterday (Oct 05), during the first part of the afternoon shift, broad band noise injections were performed on the suspended benches (using the local control actuators).
Data between 14h15m30 utc and 14h19m30 utc can be used as reference sensitivity.
The collected measurements are listed in the Table below. A few excited peaks frequencies are mentioned as indication, but a deeper analysis is required.
| Bench | D.o.F. | Amplitude in correction signal | Start (utc) | End (utc) | Figure | Comments |
| SDB1 | Z | 1.0 e-3 V/sqrt(Hz) | 14h21m19 | 14h23m19 | ||
| SDB1 | Z | 4.0 e-3 V/sqrt(Hz) | 14h23m33 | 14h25m33 | ||
| SDB1 | Z | 8.0 e-3 V/sqrt(Hz) | 14h25m51 | 14h29m21 | FIG.1 | Broad structures excited |
| SDB1 | TX | 1.0 e-3 V/sqrt(Hz) | 14h31m40 | 14h32m30 | ||
| SDB1 | TX | 2.0 e-3 V/sqrt(Hz) | 14h32m39 | 14h35m39 | FIG.2 | Broad structures excited |
| SDB1 | TZ | 2.0 e-3 V/sqrt(Hz) | 14h38m18 | 14h41m18 | FIG.3 | Broad structures excited |
| SDB1 | TY | 2.0 e-3 V/sqrt(Hz) | 14h45m35 | 14h47m35 | FIG.4 | Broad structures excited |
| SDB2 | Z | 5V RMS | 14h54m36 | 14h55m36 | no effect on DARM | |
| SDB2 | TX | 5V RMS | 14h58m46 | 15h01m46 | FIG.5 | peaks near 220, 270 Hz |
| SDB2 | TZ | 5V RMS | 15h03m39 | 15h05m39 | FIG.6 | peak near 225 Hz |
| SDB2 | TY | 5V RMS | 15h07m42 | 15h09m42 | no effect on DARM | |
| SNEB | Z | 7V RMS | 15h22m39 | 15h25m39 | FIG.7 | noise bump around 75 Hz |
| SNEB | Z | 7V RMS | 15h26m43 | 15h28m26 | FIG.8 | B7 QD shutter OPEN, similar noise bump around 75 Hz |
| SNEB | TX | 7V RMS | 15h33m51 | 15h36m21 | FIG.9 | peaks near 75, 180, 230 Hz |
| SNEB | TZ | 7V RMS | 15h38m58 | 15h43m28 | FIG.10 | bumps around 135 and 185 Hz |
| SNEB | TY | 7V RMS | 15h45m08 | 15h47m08 | FIG.11 | small bump around 70 Hz |
| SWEB | Z | 7V RMS | 15h53m22 | 15h54m52 | no effect on DARM | |
| SWEB | TX | 7V RMS | 15h59m50 | 16h01m50 | FIG.12 | bumps around 160 and 190 Hz |
| SWEB | TZ | 6V RMS | 16h02m59 | 16h05m59 | bumps around 160 and 190 Hz | |
| SWEB | TY | 7V RMS | 16h09m49 | 16h10m49 | no effect on DARM | |
| SPRB | Z | 5V RMS | 16h24m12 | 16h27m12 | FIG.13 | peak at 75 Hz |
| SPRB | TX | 5V RMS | 16h29m26 | 16h31m26 | FIG.14 | several structures between 100 and 200 Hz |
| SPRB | TZ | 5V RMS | 16h32m10 | 16h33m40 | FIG.15 | several structures between 100 and 200 Hz |
| SPRB | TY | 5V RMS | 16h33m58 | 16h36m30 | FIG.16 | large peak at 83 Hz, peaks near 115, 173, 180 Hz |
