Kar Meng, Sheila

I walked FC1 back to it's original slider position 88602 while walking the two steering mirrors between the OPO and SFI1 to keep the beam transmitted towards ZM4. Once this was done the beam was hitting the beam dump meant to catch the reflection off the beam diverter from the IFO.  I touched the last mirror on the VIP, B:M4, to bring the beam towards the center on the iris in front of ZM4, and then Kar Meng was able to see a beam on the SQZT7 periscope.  

Before we started: ZM4: P -338.7 Y -1297.7 ZM5: -120 P -460 Yaw  We moved ZM4 +5 to get the transmitted beam onto the OPO IR PD, ZM4 -338 P -1297.7 Y, ZM5 -720 P 839 Y.  Then we were able to align the CLF to the cavity a bit better by watching the flashes on the scope.  We can see evidence of clipping as the ZMs drift in the purge air the transmitted power fluctuates,  

We adjusted the in chamber CLF refl steering mirror to center on the CLF top periscope mirror, and Kar Meng aligned the CLF refl shutter PD using mirrors on SQZT7.  We were able to see that the OPO was semi-locked on the dither lock, but this wasn't stable.