Simplified model for fast optimization of a free-electron laser oscillator

被引：3
|
作者：
Li, Kai [1 ,2 ]
Song, Minghao [1 ,2 ]
Deng, Haixiao [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2017年 / 20卷 / 03期
基金：
中国国家自然科学基金;
关键词：
NONMONOENERGETIC BEAM; RADIATION;
D O I：
10.1103/PhysRevAccelBeams.20.030702
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A simplified one-dimensional theoretical model for free-electron laser oscillator (FELO) calculation which reserves the main physics is proposed. Instead of using traditional macroparticles sampling method, the theoretical model takes advantage of low gain theory to calculate the optical power single-pass gain in the undulator analytically, and some reasonable approximations are made to simplify the calculation of power growth in the cavity. The theoretical analysis of single-pass gain, power growth, time-dependent laser profile evolution and cavity desynchronism are accomplished more efficiently. We present the results of infrared wavelength FELO and X-ray FELO with the new model. The results are validated by simulation with GENESIS and OPC.
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页数：9
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