Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers
文献类型：期刊论文
| 作者 | Wang, GL; Zhang, WQ; Wu, GR; Dai, DX; Yang, XM; Feng, C; Zhang, M; Deng, HX; Wang, D; Zhao, ZT |
| 刊名 | PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
 |
| 出版日期 | 2015 |
| 卷号 | 18期号:6页码:— |
| 关键词 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24398]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Wang, GL,Zhang, WQ,Wu, GR,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):—. |
| APA | Wang, GL.,Zhang, WQ.,Wu, GR.,Dai, DX.,Yang, XM.,...&Zhao, ZT.(2015).Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers.PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS,18(6),—. |
| MLA | Wang, GL,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):—. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。