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EleonoraPolini - 17:51, Monday 27 May 2019 (1367)Get code to link to this report
Green path pre-alignment and FI stage pre-installation

[Yuhang and EleonoraP]

First we aligned the green beam before PR chamber.

Then we changed the stage of Faraday Isolator with a smaller one, in order to make space for the wind shields. We put some schotch to cover the borders of the FI, to avoid damages (fig 1).

We found a problem: not enough space for the mirror under the FI (fig 2). The black plastic edge of the mirror mount is 3.4mm while the beam reflected by the FI crystal is 5 mm far from the stage edge (fig 3).

Possible solutions:

1. make a hole in the mount in order to make space for the mirror. Size of the hole: 30 mm (diameter) and 12 mm (depth) in fig 4.

2. build a different stage with other components, in fig 5.

Images attached to this report
1367_20190527104206_img20190527wa0003.jpg 1367_20190527104251_img20190527wa0001.jpg 1367_20190527104922_fcgreenrefclipping.png 1367_20190527105015_36pm.jpeg 1367_20190527105025_img20190527172411.jpg