Mode-selective amplification in a waveguide free electron laser with a two-sectioned wiggler

Kong, Michael G.

doi:10.1109/27.659536

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Cited by 9 publications

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“…The waveguide effect on FEL has been studied by a number of authors [2][3][4][5][6][7][8][9][10][11][12][13]. In a waveguide FEL, the radiation field propagates inside the waveguide as waveguide modes, not like a light flux in a free space FEL.…”

Section: Introductionmentioning

confidence: 99%

Fully 3D time-dependent simulation of free electron laser within an overmoded rectangular waveguide

Zhao

Huang

et al. 2020

J. Inst.

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Numerical simulation codes are basic tools for designing Free Electron Lasers (FELs). This paper describes a numerical method for the time-dependent, three-dimensional simulation of the free electron laser (FEL) using a rectangular waveguide within overmoded configuration when the radiation wavelength is much shorter than the waveguide cut-off wavelength. Instead of developing a new code, the GENESIS simulation code is modified for our purpose. This method presented here can be used for extending the capacity of GENESIS to cover this special configuration. The major modification is to apply the metal boundary conditions on the field equations in a limited rectangular region and the full Cartesian mesh using the Alternating Direction Implicit (ADI) integration scheme to solve the field equation remains adopted.

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