The image above shows the now assembled turret that will hold the polarizing beam splitters. It rotates around it central vertical axis, as seen in the video below. Additional motors on the sides will allow us to exchange the two beams with each other, by rotating the optical elements. The turret is less than 15 cm in diameter and will soon be transported from Uppsala to Garching for more testing and integration.
This short video shows Alexis Lavail demonstrating the turret rotation, together with a short explanation by Nikolai Piskunov: