Empirical Optimization of Undulator Tapering at FLASH2 and Comparison with Numerical Simulations

In a free-electron laser equipped with variable-gap undulator modules, the technique of undulator tapering opens up the possibility to increase the radiation power beyond the initial saturation point, thus enhancing the efficiency of the laser. The effectiveness of the enhancement relies on the prop...

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Bibliographic Details
Published inarXiv.org
Main Authors Mak, Alan, Curbis, Francesca, Faatz, Bart, Werin, Sverker
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 30.08.2016
Subjects
Computer simulation
Free electron lasers
Lasers
Optimization
Tapering
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Summary:In a free-electron laser equipped with variable-gap undulator modules, the technique of undulator tapering opens up the possibility to increase the radiation power beyond the initial saturation point, thus enhancing the efficiency of the laser. The effectiveness of the enhancement relies on the proper optimization of the taper profile. In this work, a multidimensional optimization approach is implemented empirically in the x-ray free-electron laser FLASH2. The empirical results are compared with numerical simulations.
ISSN:2331-8422