Camilla, Ryan S, Rachel.

We went into HAM7 with the aim of check the power budget through the OPOS with ZM1,2,3 in the settings for a lower beam on ZM2 and also setting irises after ZM5 in preparation for the repeat ZM5 swap. However the beam alignment was bad so we didn't compete any of these tasks.

Red and green co-alignment still good, OPO REFL and green pump REFL still in nominal location so OPOS hadn't moved. However the beam was low and to +X on the ZM2 iris and the retroreflective off FC1 was ~4mm off at the ZM1 iris, no light was getting though the OPOS. This was true in both the old and new ZM2 beam height (ZM1,2,3) alignments. From the control room Ryan found that on Monday ZM2 moved a large amount. He undid this. Then Rachel and I worked to improve the retro-alignment with ZM2. We then got beam through OPOs to ZM4 but still no light on the IR PD. This was confusing so we stopped. Today we found out this was because Rahul had locked ZM5 while troubleshooting it. Once he unlocked ZM5 we had some light on SQZT7 PD. 

I think ZM2 must have been bumped when I was measuring the distances between ZM2 and the nanoscan. See bump in ndscope.  There is cable in the front of ZM2 that if I moved could change the hanging of ZM2.

Rahul confirmed that ZM2 is heathy 91186, just it appears that now the alignment sliders need to be in a different location for the same pointing.