Optimization of a seeded free-electron laser with helical undulators |
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Authors: | Labat M Hosaka M Shimada M Katoh M Couprie M E |
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Institution: | Centre CEA-Saclay, DSM/DRECAM/SPAM, 91 191 Gif-sur-Yvette, France. marie.labat@synchrotron-soleil.fr |
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Abstract: | Seeded single pass free-electron lasers are promising coherent, short-duration, and intense light sources, from the visible to x rays. Operated with adjustable undulators, they are also a unique device for providing fully variable polarized radiation. We report here the first seeding of helical undulators with a variable polarized source. We demonstrate that the adjustment of the seed polarization and focusing allows the free-electron laser radiation to be optimized in terms of intensity and quality. |
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