1. Set the aligned state SR2 and SR3 mirror.
Fig.1. showed the ETMY TCam image when setting the aligned state for SR2 and SR3
2. Set the aligned state ETMY
But when I requested the ALIGNED state to ETMY, the large oscillation happened, so I requested the DAMPED state and aligned manually using the MN optic align.
Fig.2. showed the ITMY TCam image when setting the damped state and manual alignment for ETMY.
3. Tweak the ETMY by maximum the ALS REFL PD.
P : 20.4 -> 17.0
Y : 19.7 -> -12.0
4. Set the aligned state ITMY
5. Tweak the ITMY by maximum the ALS REFL PD.
P : 24.0 -> -20
Y : -16 -> -55
ITMY TM oplev also excellent!
6. Fluctuate both ETMY and ITMY and tried to find the GRY flash
Fig.3. showed the image when GRY like signal found.
The final TM WIT values are
ITMY P : -29.0
ITMY Y : -56.0
ETMY P : 19.0 (MN OPTICALIGN -320)
ETMY Y : -18.0 (MN OPTICALIGN 25)
