KAGRA MIR (Absorption)
MarcEisenmann - 19:31, Tuesday 22 November 2022 (3118)
preparation of 0.5 inch HR surface measurement

[Marc, Nishino]

We restarted the probe and pump laser sources.

When we tried to move the translation stage it tried to move to crazy position so we stopped the LabView motion and manually brought the translation stage close to the home positon.

Then we home the translation stage with Zaber.

After that, we could properly move the translation stage.

We tried to measure the surface reference sample at the previous good position but got lower calibration factor than expected (about 12.2/W).

We slightly changed the sample z position and the imaging unit position but could not really improve the calibration factor meaning that the alignment might have drifted.