[Shurong, Yuhang, Eleonora]

We have completed the assembly of the auxiliary IR mode cleaner, which will be used for the matching of the beams on the homodyne detector.

Fot the input/output mirros we used two mirrors from the same batch (6 pieces) used for the other IR modecleaner. 

We double checked that all the mirrors were installed with the side arrow pointing towards the cavity

We put the white orings only on the input/output mirror, which should be fine.