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Figure 3
One image of the regions on the mirror that is used in the analysis from (a) with upstream (US) sandpaper, and (b) with downstream (DS) sandpaper. (c) Slope error from the experiments. The black line shows the measurement from the DS measurement with the proposed iterative methods, the red line from the US measurement, and the black dashed line from a previous linear approach of the mapping wavefront slope to the mirror surface without the iterative procedure. In panel (d) the slope error from Diamond-NOM is shown by the blue dashed line (Alcock et al., 2010BB2).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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