Matteo, Eleonora, Simon

(Report from July 30th 2019)

As we finished absorption and polarization characterizations of the ETMX spare mass, we exchanched it with the ETMY spare mass (see pictures below).
We tried a kind of new technique for making the exchanging procedure a bit more easier and safer. Therefore, we made use of the holding-structure of the container where the mirror-substrates are transported. We found that we can use those structures to flip the substrate in a horizontal position (which is required for the measurements) and to put it directly on the sample-holder which coincidentally fits very well to these holding-structures.
That way works also vice-versa.

In addition, we recognized that both substrates indeed have a mark (probably) pointing to the thicker side of their wedges.
However, we found that this mark is on different sides for ETMY and ETMX (see last pictures).