[lydia, steve, ericq, gautam]

Summary:

• ETMX is now suspended by wire clamps (winches have been removed) 
• Wire clamp was machined by shop, D groove widened to spec, old wire grooves removed from face
• We also sanded the part of the suspension tower in contact with the primary wire clamp, as there were a couple of craters there which looked dangerous (pictures to follow)
• Height was adjusted by centering magnets on OSEMs. We then winched an extra half turn in anticipation of wire sag
• I then proceeded to tighten, first, the primary wire standoff (I reduced the torque on the torque wrench to ~1.25Nm), and then the secondary wire clamps.
• Checked that the ruby standoff is sitting on the optic barrel and not on glue 
• Later in the evening, I inserted OSEMs, centered magnets, and checked that the damping scheme set up last week works (I'm leaving the damping on, bottom EQ stops are ~0.5mm from the optic)
• Checked the pitch balancing - initially, we were ~60mrad off. By using the tweezers to gently adjust the position of the ruby standoff (after clamping the optic, turning the damping off), I was able to improve the situation a little bit - now we are ~20 mrad off. I am not attempting to do the fine pitch balancing tonight, but all parts of the PZT buzzer set up are ready to go in the cleanroom.
• Unfortunately, in the process of doing the pitch balancing, the position of the magnets relative to the OSEM coils have moved. Now the UR magnet looks a little high relative to the coil, but perhaps after any sag has set in, we should be alright. Else, we can probably get away by inserting one of the little metal shim pieces, the adjustment required is small.
• Lydia will upload some photos soon. 

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• We actually went through another failed attempt today - this time, the problem was that the winches were not sufficiently secure at the top, such that when the range of the winch was nearing its end, the whole assembly twisted and took the wire along with it. Perhaps this would not have happened if we had a winch adaptor plate handy...

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• Plan for tomorrow:
  • ​Fine pitch balancing using PZT buzzer
  • Clean ETMY epoxy residue from knocked off magnet
  • Glue wire standoff
  • Glue ETMY magnet