KAGRA Logbook

Reports 1-1 of 1

VIS (EY)

takafumi.ushiba - 15:16 Sunday 15 May 2022 (20729)

In-air health check of ETMY: Final check of the transfer function of each DOF

Abstract:
I checked TFs of all DOF at IP, GAS, BF, MN, and IM.
All TFs seem fine.

Detail:
I checked mechanical TFs from each DOF excitatio to each DOF signals at each stage.
Attached are the results (fig1 - fig26).

Coupling from BFY to the other BF DOFs becomes larger. It can be due to the heat link conection but no large problem.
MNP lowest resonance is high as well as ITMY. I have no idea of the reason but it is also not a large issue.
MNY lowest resonance is also high, which is already reported before (klog20543), but is is also not a large issue.

Other than above, there is no special remarks for the results of ETMY.

Note:
Measured data was stored at /kagra/Dropbox/Measurement/VIS/PLANT/ETMY/2022/05/.

Images attached to this report

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