Nutsinee Kijbinchoo, Terry McRae, Jeff Kissel, Keita Kawabe, Daniel Sigg, TJ Shafer, Sheila,

• When we entered HAM5 we found that the beam from the OPO, which was centered on the apertures in HAM6 in preparation, was hitting the ECD bracket on ZM2 (photo).  
• We decided not to translate ZM2.  Corey Austin had looked at a Zeemax drawing of the location of ZM2 and found that based on the nominal locations in solid works, we could increase the aperture on the face of ZM2 by 3 mm if we moved ZM2 by 50 mm in the -X direction.  Since we weren't sure that the solid works model is really showing an accurate position of ZM2, and we were short of time, we decided not to translate it this time.  Nutsinee took some photos that show the location of ZM2 more clearly than what we had before.  
• Jeff K adjusted the yaw of ZM1 to get us the best clearance we could on both sides of ZM2.  (In the attached photos you can see our measurement technique for the clearance on the -x bracket and +x bracket.  The edge of the card is against the edge of the bracket in both photos, and the bean is just a bit further from the edge than the T on the card in both cases.  From the edge of the card to the T is about 1+1/16th inches, so the beam is about 1.1-1.2 inches from the inner edge of the slots on the bracket.  Based on the drawing of the new ECD assembly and the bracket drawing, the inner edge of the bracket is 0.61 inches from the inner edge of the slots, so the beam is about 14 mm from the inner edge of the bracket on each side if we are looking at the optic face on. 
• With this we only needed a small adjustment of ZM2 yaw to hit the center of the two fixed steering mirrors on the OFI.  We saw the beam hitting the aperture on the rear of the SRM baffle low and in the -x direction, so we adjusted both pitch and yaw on the second OFI steering mirror (the -y  one).  With this mirror we were able to get the beam into HAM6.  
• We used the SRM alignment found on Feb 8th
• We couldn't see the beam in transmission of OM1, so we decided to center it on OM2 and we think that this should be good enough to allow us to co-align the squeezer and the IFO beam once we have the pico. (before photo shows location of beam on OM2 before pico was swapped in.)  
• After we had that alignment we swapped in the picomotor which was already mounted.  Keita adjusted this by hand so that the beam came out very nearly centered on OM2.  We made the final adjustment of the beam location on OM2 using the new picomotor (after photo).
• We swapped the brackets on ZM2 without encountering any problems.  
• After we were out of HAM5, we roughly placed the apertures in HAM6 on the new beam alignment, in case we have any difficulties finding our beam once we are pumped back down. 
• TJ, Jim and Jeff K are right now checking transfer functions in HAM5, found that the OFI osems weren't centered, TJ and Jeff K have gone back to center them. 

yak