The evolution of the radiation pulse in a 3D time-dependent free-electron laser

초록

We have developed a 3D time-dependent code to analyze of the evolution of a radiation pulse and have used that code to study the evolution of the radiation pulse in a three-dimensional time-dependent free-electron laser (3D time-dependent FEL). For the simulations, we used a wiggler length of 2 m, a wiggler period of 0.02 m, an electron beam energy of 50 MeV, an electron beam current of 50 A and a radiation wavelength of 2.54 µm. In particular, we have used the code that we developed to study the normal distribution function for the energy spread, the pulse shape of the emitted field versus time for a variety detuning parameters, the pulse shape of the emitted field versus the radiation wavelength for various times, and the gain versus pass for various times. © 2018 The Korean Physical Society. All Rights Reserved.

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