Betsy, Jason
After rounding up step stools and tooling needed to be able to work in HAM4, I went into the chamber in order to mount the corner cube in front of the SR2 suspension for the first IAS sight shots. In order to set the corner cube mount into place I had to move:
1) 1" witness plate and assy that was vertically mounted on the front of the SR2 structure
2) 2 SR2 dog clamps of course
3) The large steering mirror (HWS?) parked in front of the sus structure and some of it's dog clamps.
As well, the witness plate that also in front of the sus structure will need to be moved as it is in the line of tool fire. I've removed the 1" witness optic and put it in a holder to ship back to CIT (presumably). We're still apparently sorting out what to do with the witness plate and optic which was placed by Kate on her last visit.
Other CC note: The particle counter in the SW corner of the cleanroom was consistently reading 14 or 25 for 0.3um particles, when I happened to look at it.
Jason will post X,Y,Z measurements of the optic position in HAM4. We've already started to tool up the SR2 sus to make the shifts he notes, but ran out of time to switch over to laser hazard. WIll resume tomorrow.
Here are the current X, Y, and Z position errors of the SR2.
I also want to note that we had to move a tip/tilt stage in the West side of HAM6 that was completely blocking line of sight to SR2. We will also have to move a tip/tilt stage on the East side of HAM6 as well as the OMC when we do the pitch/yaw alignment of SR2 in a couple days. Once we finish the longitudinal shift tomorrow morning I will begin re-setting my equipment for the pitch/yaw alignment.