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Figure 4
Focal image produced by a system of two mirrors: M1 (collimating parabola) and M2 represented by (a) a toroid, or (b) a diaboloid. Row 1: bending-magnet source in the current ALS storage ring. Row 2: the future, upgraded ALS-U ring. Row 3: ideal point source. The FWHM of the intensity distributions are written in the graphic titles. The image contrast is set on a logarithmic scale for better visibility.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 4| July 2021| Pages 1041-1049
https://doi.org/10.1107/S160057752100401X
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