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AdV-ISC (LSC Noise Budget)
bersanetti, mwas - 19:10 Tuesday 03 December 2024 (65703) Print this report
SRCL noise injection at

Today we made a special noise injection on SRCL, out of band, using the new SRCL_flt_HF shape (bandpass Butterworth centered at 150 Hz with 120 Hz of half-band), aimed at the study of the coupling to both DARM and Hrec at higher frequency.

Several amplitudes were used, up to 100:

  • 17:27:45 UTC + 90 s: A = 10;
  • 17:29:25 UTC + 60 s: A = 20;
  • 17:30:05 UTC + 120 s: A = 40;
  • 17:32:15 UTC + 120 s: A = 60;
  • 17:34:25 UTC + 120 s: A = 80;
  • Around 17:37 UTC: 25-min glitch
  • 17:38:00 UTC + 180 s: A = 100.

The plot shows the result of the last injection, data will be used offline.

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Comments to this report:
bersanetti - 18:07 Wednesday 11 December 2024 (65785) Print this report

I ran my noise budget script just for this injection (logfile /virgoData/NoiseInjections/LSC/LSC_injection-1417282698.txt) and the outcome is attached: the injected noise managed to get coherence in a relatively high band, the projection is quite low on DARM, with no particular shape.

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