DICP OpenIR
Subject Area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)
Source PublicationPHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2015-06-04
DOI10.1103/PhysRevSTAB.18.060701
Volume18Issue:6Pages:060701
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS Research AreaPhysics
WOS KeywordGAIN HARMONIC-GENERATION ; SIMULATION ; COHERENT ; FEL
AbstractThe 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.
Language英语
WOS IDWOS:000355624500001
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143721
Collection中国科学院大连化学物理研究所
Corresponding AuthorYang XM(杨学明); Deng HX(邓海啸)
Affiliation1.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
Recommended Citation
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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