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Figure 14
The behavior of the HEW filtering the spatial wavelength of the profile in the case of the DiProI KB system vertical mirror. The left-hand side of each graph represents a situation close to an ideal elliptic profile, so the HEW becomes almost constant and determined only by the diffraction limit and by the demagnification of the optical system. Moving to the right, we add longer and longer spatial wavelengths until we reconstruct the fully measured profile of the mirror at the right side. Notice the plateau above 40 mm in the case of 4.14 nm beam wavelength; this is probably due to the non-isotropic nature of the FEL emission.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 5| September 2019| Pages 1462-1472
https://doi.org/10.1107/S1600577519007938
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