Keyword: extraction
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TUP047 An Analysis of Optimal Initial Detuning for Maximum Energy-Extraction Efficiency electron, FEL, synchrotron, undulator 145
  • Q.K. Jia
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
  For low gain free electron laser (FEL), the phase space evolutions of trapped electrons in the phase bucket are analyzed through calculating their synchrotron oscillation periods, which vary with the initial detuning and initial phase. The optimal initial detuning for the maximum energy-extraction efficiency and the corresponding saturation length are given. The analysis demonstrated that for the low gain case the gain of the strong optical field is about a quarter of that of the weak optical field (small signal gain), and the saturation power larger than that of high gain FEL can be achieved in the resonator of oscillator FEL.  
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About • paper received ※ 19 August 2019       paper accepted ※ 27 August 2019       issue date ※ 05 November 2019  
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