X-ray beam quality after a mirror reflection: Experimental and simulated results for a toroidal mirror in a 4 ^th generation storage-ring beamline.

ABSTRACT:

Background

The surface errors found in X-ray mirrors constitute a limiting factor for preserving beam quality. This is particularly important when the X-ray beam has low emittance and a significant coherence fraction, like in newly upgraded synchrotron storage rings.

Methods

We studied the fringes observed in the image of an undulator-produced X-ray beam reflected by a high-quality toroidal mirror. The measurements and simulations were performed using different conditions: a photon beam either monochromatic or with large bandwidth, reflected by a mirror with variable curvature.

Results

The experimental data are compared with up-to-date simulation including partial coherence.

Conclusions

The observed fringes in the unfocused beam correlate with low spatial frequ

SUBMITTER: Reyes-Herrera J 

PROVIDER: S-EPMC10660299 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature