A simple model of the free electron laser oscillator from low into high gain

An investigation of the Compton free electron laser (FEL) oscillator from the low into the high gain regime is presented. The one-dimensional Maxwell-Pendulum equations, describing the radiation-electron beam evolution in an FEL, are used to develop a simple, computationally efficient method of modeling the radiation evolution. The maximum efficiency for a range of values of the gain parameter G is calculated.<
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