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MIF (ITF Control)
hirotaka.yuzurihara - 10:44 Friday 21 June 2024 (30037) Print this report
Comment to PRX lock trial (29999)

[Kenta, Yuzu]

We investigated the cause of the 6dB difference in the Fig. The 2.9dB (x1.4) difference could be explained by the phasing work(klog#30006). Still the 3dB difference is unexplainable.

Details

  • We checked the filter bank at the latest (2024/06/19 11:38:19 UTC) and the past measurement (2022/12/04 06:56:33 UTC). But, the value in the filter bank (FM8) was not changed, except for the 1e-9 correction. (Fig)
  • The normalization factors for input powers from the IMC are consistent with the input power. The normalization was not problem at both measurements. (Fig)
  • The demodulated amplitudes were 0.079041 (updated at 2022/12/04, Fig) and 0.111175 (updated at 2024/06/19, Fig). The ratio is factor 1.4, that is 2.9dB (Fig).
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