[Tamaki, Akutsu, Miyoki, Ushiba with help of Miyo]

This post is related to klog17770.

Abstract:
We prepared stuffs for beam profile measurement and installed steering mirrors after GrL3 to pick off the Green beam.

Detail:
We  brought two mirrors, mirror folders, and pedestals to pick off green beam for beam profile measurement.
Since the distance between HBS and periscope is too short to put a steering mirror and it is hard to detect the transmitted green beam from the periscope mirror, we put steering mirror just after GrL3 lense (fig1).
Then, I put another steering mirror to align the reflected green beam along the screw bolts on the optical table for easily calculating current beam profiler position from GrL3.
After the setup of the mirrors, I passed the remaining tasks to Akutsu-san, which has been already reported in klog17770.

Note:
Since the space between GrL3 and HBS is also not so wide, the distance between inserted steering mirror and GrL3 was roughly 50mm, and it is hard to change this value largely.
installed stuffs are labeled (10D20DM.11) in order to avoid mixing with POP ones because they seems to be for POS table (fig2).