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学科主题物理化学
Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers
Wang, Guanglei1; Zhang, Weiqing1; Wu, Guorong1; Dai, Dongxu1; Yang, Xueming1; Feng, Chao2; Zhang, Meng2; Deng, Haixiao2; Wang, Dong2; Zhao, Zhentang2; Yang XM(杨学明); Deng HX(邓海啸)
刊名PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2015-06-04
DOI10.1103/PhysRevSTAB.18.060701
18期:6页:060701
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]Physics
关键词[WOS]GAIN HARMONIC-GENERATION ; SIMULATION ; COHERENT ; FEL
英文摘要The beam energy spread at the entrance of an undulator system is of paramount importance for efficient density modulation in high-gain seeded free-electron lasers (FELs). In this paper, the dependences of high harmonic bunching efficiency in high-gain harmonic generation (HGHG), echo-enabled harmonic generation (EEHG) and phase-merging enhanced harmonic generation (PEHG) schemes on the electron beam energy spread distribution are studied. Theoretical investigations and multidimensional numerical simulations are applied to the cases of uniform and saddle beam energy distributions and compared to a traditional Gaussian distribution. It shows that the uniform and saddle electron energy distributions significantly enhance the bunching performance of HGHG FELs, while they almost have no influence on EEHG and PEHG schemes. A further start-to-end simulation example demonstrated that, with the saddle distribution of sliced beam energy spread controlled by a laser heater, the 30th harmonic can be directly generated by a single-stage HGHG scheme for a soft x-ray FEL facility.
语种英语
WOS记录号WOS:000355624500001
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143721
专题中国科学院大连化学物理研究所
通讯作者Yang XM(杨学明); Deng HX(邓海啸)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
推荐引用方式
GB/T 7714
Wang, Guanglei,Zhang, Weiqing,Wu, Guorong,et al. Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers[J]. PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS,2015,18(6):060701.
APA Wang, Guanglei.,Zhang, Weiqing.,Wu, Guorong.,Dai, Dongxu.,Yang, Xueming.,...&邓海啸.(2015).Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers.PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS,18(6),060701.
MLA Wang, Guanglei,et al."Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers".PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 18.6(2015):060701.
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