We redid the noise injection in LN3
| DOF | GPS start UTC | duration | filter | amplitude |
| quiet | 21:45:00 | 5 min | ||
| PR X | 22:08:20 | 5e-9 | ||
| " | 22:11:08 | 3 min | 5e-8 | |
| quiet | 22:15:00 | 2 min | ||
| PR Y | 22:22:20 | 2 min | 5e-8 | |
| " | 22:22:35 | 2 min | 1e-7 | |
| 22:24:05 | 1e-6 too high, we unlocked |
For PR_X (ie SIB1 TY), we were sending more noise at high frequency and less at low frequency than last week (see the filter at the bottom of the entry), we saw many new structures in the range 50-200 Hz (see figure 1 and 2).
For PR_Y we were sending noise similar to what we did last week but it made the interferometer unlock.
# ASC Noise filter butterworth
ACL_FILTER_SET ASC_noise_butter 1 1 10 12
ACL_FILTER_BUTTERWORTH ASC_noise_butter "lowpass" 2 3 200
ACL_FILTER_BUTTERWORTH ASC_noise_butter "highpass" 10 3 50
