Tanioka with help from Shoda-san @Mitaka
We are preparing TMS VIS @ Mitaka now.
Yesterday (July 18th), we measured Transfer Function of TMS VIS (L, T, and Y dirction).
Attached figures show the result.
The next step is to compare the resonant frequency to the model and to optimize the diagonalization.
As a result of discussion with Shoda-san and Okutomi-san, the behavior of suspension is OK.
This means that from the results of LVDT TFs TMS VIS suspension shows single pendulum behavior.
In addition, the resonant frequencies are almost same as the model made by Uraguchi-san.
On the other hand, behaviors of Geophone at high frequency are strange.
Since no filters are adapted to Geophone signals, Geophone TF are ought to be inverse proportional to frequency.
However, their TFs are flat.
Some details will be described in the following link.
http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/subgroup/AOS/TMS-VIS0/2018-07-19
Also you can see more information about TMS-VIS here
http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/subgroup/AOS/TMS-VIS0
