[Suresh / Kiwamu]
The attenuator was removed and now the MC is happily locked with the full power of 1.2 W.
(what we did)
+ replaced the perfect reflector, which was before the MCREFL_PD, by a 10% beam splitter like it used to be.
+ removed the attenuator (combination of HWP and PBS).
+ realigned the beam path on the AP table, including the MCREFL path and WFS path.
+ made the aperture of the MC2F camera narrower in order to avoid a saturation.
+ aligned the MC suspensions so that it resonates with the TEM00 mode.
+ put a ND filter on the AS camera
C1:IOO-MC_RFPD_DCMON = 0.98 (locked)
C1:IOO-MC_TRANS_SUM = 17500 (locekd)
(next things to do)
+ measurement of the spot positions on each MC mirror.
+ centering of the beam spot by steering the input mirrors on the PSL table