This morning with Manar, in order to prepare the installation of the news FP cavity mirrors,

- we installed the Koheras below the optical table
- we put a fiber prolongator at the end of the Koheras fiber and we put a mounted collimator at the end of the fiber.
we added a mirror at 45° to inject the beam to injection axis of the table.
- as the beam was still slightly divergent, we added a 750mm lens ~20cm after the collimator to improve the beam collimation.
now the collimated beam is going approximatively through the middle all of the iris in the optical path.

we finished by ~2h of cleaning of the optical table and elements, which were very dirty.
it is still a bit dirty. see the attached file to get the numbers provided by the particle counter after the cleaning.