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- Title
Focus characterization at an X-ray free-electron laser by coherent scattering and speckle analysis.
- Authors
Sikorski, Marcin; Song, Sanghoon; Schropp, Andreas; Seiboth, Frank; Feng, Yiping; Alonso-Mori, Roberto; Chollet, Matthieu; Lemke, Henrik T.; Sokaras, Dimosthenis; Weng, Tsu-Chien; Zhang, Wenkai; Robert, Aymeric; Zhu, Diling
- Abstract
X-ray focus optimization and characterization based on coherent scattering and quantitative speckle size measurements was demonstrated at the Linac Coherent Light Source. Its performance as a single-pulse free-electron laser beam diagnostic was tested for two typical focusing configurations. The results derived from the speckle size/shape analysis show the effectiveness of this technique in finding the focus' location, size and shape. In addition, its single-pulse compatibility enables users to capture pulse-to-pulse fluctuations in focus properties compared with other techniques that require scanning and averaging.
- Subjects
X-ray spectroscopy; COHERENT scattering; LIGHT sources; FREE electron lasers; LIGHT scattering -- Measurement
- Publication
Journal of Synchrotron Radiation, 2015, Vol 22, Issue 3, p599
- ISSN
0909-0495
- Publication type
Article
- DOI
10.1107/S1600577515004361