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AOS (Beam Reducing Telescopes)
hirose.chiaki - 22:31 Tuesday 27 September 2022 (22221) Print this report
Comment to Alignment of IR QPD on TMSX (20263)

Kokeyama-san, Hirose

We checked PIT YAW coupling of IR QPD on TMSX, with ITMX PIT moving 1Hz and placing QPD2 roughly.

ITMX PIT movement was clearly detected from the graphs for both when placed far and near to lens2.→x_far_lens.png, x_near_lens.png
(../../users/Commissioning/data/ASC/2022/TMSX/BeamProfile/20220927/beam_shake_x_{far,near}_lens.xml)

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For the QPD installation for the Xarm ASC, we measured beam profile of TMSX IR.

We need to separate two QPDs by more than gouy phase 90 degrees in order to separate DoF (shift and tilt) of ASC, 

but it looks like we can separate them (although the distance is far). →TMS_IR_beamprofile_gouy.png

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