Chinese Physics C > 2011, Vol. 35 > Issue(9): 880-884 DOI: 10.1088/1674-1137/35/9/018

Parameter study for enhanced high gain harmonic generation scheme

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Abstract：
An easy-to-implement scheme called Enhanced High Gain Harmonic Generation is expected to be able to significantly enhance the performance of HG-FEL. In this paper we investigate the effects of the system parameters in the new scheme, including the electron energy detuning, initial electron-beam energy spread, seeding laser power, dispersive field strength and amount of the phase shift, etc. The numerical results from GENESIS (3D-code) are presented and show that the new scheme has acceptable parameters tolerance requirements and is no more or even less sensitive to the system parameters than that of the existing scheme; With the electron energy above the resonance, the efficiency is enhanced for both the new scheme and the existing scheme compared with the resonant energy case.

References

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JIA Qi-Ka and LI He-Ting. Parameter study for enhanced high gain harmonic generation scheme[J]. Chinese Physics C, 2011, 35(9): 880-884. doi: 10.1088/1674-1137/35/9/018

JIA Qi-Ka and LI He-Ting. Parameter study for enhanced high gain harmonic generation scheme[J]. Chinese Physics C, 2011, 35(9): 880-884. doi:10.1088/1674-1137/35/9/018 shu

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Received: 2010-12-20
Revised: 2011-02-02

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Parameter study for enhanced high gain harmonic generation scheme

Received Date:2010-12-20

Accepted Date:2011-02-02

Available Online:2011-09-05

Abstract:An easy-to-implement scheme called Enhanced High Gain Harmonic Generation is expected to be able to significantly enhance the performance of HG-FEL. In this paper we investigate the effects of the system parameters in the new scheme, including the electron energy detuning, initial electron-beam energy spread, seeding laser power, dispersive field strength and amount of the phase shift, etc. The numerical results from GENESIS (3D-code) are presented and show that the new scheme has acceptable parameters tolerance requirements and is no more or even less sensitive to the system parameters than that of the existing scheme; With the electron energy above the resonance, the efficiency is enhanced for both the new scheme and the existing scheme compared with the resonant energy case.

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Parameter study for enhanced high gain harmonic generation scheme

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Parameter study for enhanced high gain harmonic generation scheme

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