PX: February 2010 Archives

For the MX endstation we've characterized the dependence of the direct beam on detector distance and 2-theta. We collected 4 sweeps of the detector from 120mm to 1600mm combined with 2-theta offsets from 0º up to 12º. These are the gnuplot 3D plots of the data.
xbeams.png ybeams.png
This set of 3D plots uses gnuplots pm3d settings to generate colorful versions:
xbeam3ds.png ybeam3ds.png
Click the images to view larger versions, and hit the "jump" to read the gory details of the polynomial equation used to determine x-beam and y-beam given any value of detector distance (CCD_Z) and 2-theta.

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