[Enzo, Shoda]

F0 keystone lowered

Since we found that the F0 GAS is too low, which seems to make the suspension lower, and to make the magnetic damer far away from the SF.
However, the F0 fishing rod did not work remotely. Therefore we opened the tank and lowered the keystone with the help of Mark.

According to the LVDT signal, it says that the keystone is 4 mm lowere than the nominal.
But actually it was only 1.5 mm lower than the nominal. The LVDT calibration gain is wrong.

Whole chain mode

The whole suspension is still rotating largely. The magnetic damper is not effective.
In order to make the magnetic damping stronger, we have to lower the magnetic damper.
However, it is difficult because we cannot see the SF stage and it may touch to the SF.

Damping updated

So we just tried to update the damping loop.
We found that the actuation sign of H2 IP LVDT was wrong. And updated the IP control.

We implemented the IPL, IPT, IPY control.

The remained is GAS control.
The TF measurement is on going. (The resonant frequencies are too low!)