To try to find out what is going wrong with Transfer Line 5, let's look at photogrammetry. These are the positions of the apex of the triangle of targets for the SLM Reference DCOPS for all SLM stations.
Looking at each station in turn, we see some significant variation.
Quite a bit of it comes from the fact that the ME+1/-1 stations are different from the rest.
However, there remains something different about the ME+/-3 positions for Transfer Line 5, and something odd about the photogrammetry for position ME+2/3. At that point it is not simply a matter of selecting the wrong PG target on the DCOPS--none of the 3 choices group with the rest.
Using the toy SDF I determined (again) that the DCOPS vector follows the Z in the DCOPS coordinate system, with Y being the direction of the L/R CCD readouts and X being opposite to the direction of the U/D CCD readouts. I adjusted the documentation on the image to reflect this.
I have not forgotten.
Modified 11-September-2009 at 11:55
http://hep.physics.wisc.edu/~jnb/cms/11Sep2009
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