Reports 1-1 of 1 Clear search Modify search
MIF (Noise Budget)
masayuki.nakano - 13:00 Tuesday 10 March 2020 (13442) Print this report
Frequency noise contribution

[Aso, Nakano]

We checked the frequency noise projection to DARM.

  • The frequency noise contribution to DARM is more than 100 times smaller from our sensitivity.
  • The reason why the CARM contribution seems close to the DARM sensitivity is the ADC noise of the CARM noise monitor point (REFL_PDA1_45I). Now the gurdian turn it on in PRFPMI_LSC_LOCKED_RF state.
  • The coupling factor fluctuating a lot by a factor of 10. That means the CMRR of the frequency noise changing by factor of 10. We should investigagte it at some point.
  • The curve put on the DARM sensitivity shows the upperlimit as shown in the attached movie.
Images attached to this report
Comments to this report:
masayuki.nakano - 6:28 Tuesday 17 March 2020 (13613) Print this report

I forgot to put the movie

Non-image files attached to this comment
Search Help
×

Warning

×