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VIS (General)
fabian.arellano - 16:35 Thursday 10 September 2020 (15013) Print this report
Type-B IP resonant frequencies.

In the context of tuning the IP resonant frequencies before O4, I measured the resonant frequencies of SR3 and SRM. The values for BS and SR2 will be reported next week.

  IP-L (mHz) IP-T (mHz) IP-Y (mHz)
BS      
SR2      
SR3 90 70 328
SRM 58 55 313

 

Files:

/kagra/Dropbox/Subsystems/VIS/TypeBData/XXX/TF/Measurements/20200910/

where XXX = SRM, SR3.

Comments to this report:
fabian.arellano - 11:31 Friday 11 September 2020 (15018) Print this report

I updated the table:

  IP-L (mHz) IP-T (mHz) IP-Y (mHz) Temperature (ºC)
BS 85 117 164 24
SR2 70 87 316 23.8
SR3 90 70 328 24
SRM 58 55 313 23.9

Files:

SR2 data is from a free swing displacement amplitude spectral density measured on 28/05/2020

/kagra/Dropbox/Subsystems/VIS/TypeBData/SR2/quality_factors/SR2-AllStages-FreeSwing-ControlOff.xml

BS data comes from TF today measurements located at

/kagra/Dropbox/Subsystems/VIS/TypeBData/BS/TF/Measurements/20200911/

For the BS there is also a free swing displacement spectral density in the same directory.

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