After the alignment mystery yesterday 91183 where I must have moved the ZM2 cable adjusting it's alignment, today I found the new ZM2 alignment for the beam to be retroreflected in the FC path, nominal alignment sliders attached. Also moved to the "new" ZM2 beam location (beam closer to 5.75" high at ZM2) plus the amount I needed to move ZM2 to account for the ZM2 bump. The beam was retroreflected fine, sliders of the "new ZM2" location attached.  In this new location the H1:FEC-160_DAC_OUTPUT s are around 20k which slightly better than before I bumped ZM2. 

 

Ryan and I took power budgets through the OPOS. We got between 4.5 and 7.5% power drop from out fo the OPO before A:DC1 to after B:M4 for both the nominal and "new ZM2" alignments, see below. In 90573 we got between a 2% and 5.5% power drop, so although we thought his was fine at the time, but maybe it isn't. 

We added an iris after ZM5, to assist in realignment of ZM5 once it is swapped next week. 

 

We digitally checked that the three fiber rejected powermeters F:BD1, G:BD1 and H:BD1 we reading power in medm when the beams were on them. We did not check the centering on the PDs. We did check the centering on the beamdumps: G:BD1 and H:BD1 were fine, the beam was very close to the gap between panels for F:BD1 so we adjusted it, before and after attached.