Enhancement of the Stability for an Electron Beam by Using a Two-frequency Wiggler in a Free-electron Laser

被引：0

作者：

Nam, Soon-Kwon ^{[1
]}

Kim, Ki-Bum ^{[2
]}

机构：

[1] Kangwon Natl Univ, Dept Phys, Chunchon 200701, South Korea

[2] Kangwon Natl Univ, Cyclotron Res Inst, Chunchon 200701, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 58卷 / 01期

关键词：

Free-electron laser; Two-frequency wiggler; Guiding-center variables; TRAJECTORIES;

D O I：

10.3938/jkps.58.22

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The stability of an electron beam is important to improve the radiation power, gain, and efficiency, and it becomes low grade due to the high wiggler magnetic field and self-generated fields in a high power free-electron laser. To enhance the stability of the electron beam, a two-frequency wiggler is used. We investigate the effects of self-generated fields for enhancing the stability of the electron beam for a two-frequency wiggler with an axial-guide magnetic field. To analyze the phase space of the electron motion in a field configuration consisting of a two-frequency wiggler magnetic field, a uniform axial-guide fields, and a self-generated fields, we apply the guiding-center variables, and we optimize the two-frequency wiggler parameters by using the numerical simulations from an extended Hamiltonian.

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页码：22 / 26

页数：5

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