Synchrotron Radiation, Free Electron Laser, Application of Nuclear Technology, etc.

Optimization of single-step tapering amplitude and energy detuning for high-gain FELs

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2015 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
, , Citation Li He-Ting and Jia Qi-Ka 2015 Chinese Phys. C 39 018101 DOI 10.1088/1674-1137/39/1/018101

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1 National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Dates

  1. Received 11 March 2014
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1674-1137/39/1/018101

Abstract

We put forward a method to optimize the single-step tapering amplitude of undulator strength and initial energy tuning of electron beam to maximize the saturation power of high gain free-electron lasers (FELs), based on the physics of longitudinal electron beam phase space. Using the FEL simulation code GENESIS, we numerically demonstrate the accuracy of the estimations for parameters corresponding to the linac coherent light source and the Tesla test facility.

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