CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Purified self-amplified spontaneous emission free-electron lasers with slippage-boosted filtering
Xiang, Dao; Ding, Yuantao; Huang, Zhirong; Deng, Haixiao
2013
Source PublicationPHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
ISSN1098-4402
Volume16Issue:1
AbstractWe propose a simple method to significantly enhance the temporal coherence and spectral brightness of a self-amplified spontaneous emission (SASE) free-electron laser (FEL). In this purified SASE (pSASE) FEL, a few undulator sections (called slippage-boosted sections) resonant at a subharmonic of the FEL radiation are used in the middle stage of the exponential growth regime to amplify the radiation while simultaneously reducing the FEL bandwidth. In this slippage-boosted section, the average longitudinal velocity of electrons is reduced, which effectively increases the FEL slippage length that allows the radiation fields initially far apart to create a phase relation, leading to n times increase in FEL cooperation length, where n is the ratio of the resonant wavelength of the slippage-boosted section to that of the original FEL radiation. The purified radiation, as a seed with improved temporal coherence, is further amplified to saturation in the undulator sections tuned to the FEL wavelength. Using the linac coherent light source II (LCLS-II) parameters as an example, we show that with the proposed configuration the temporal coherence and spectral brightness of a SASE FEL can be significantly enhanced. This scheme may be applied to many SASE FEL light sources to enhance the FEL performance. DOI: 10.1103/PhysRevSTAB.16.010703
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000313954000002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13875
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Xiang, Dao,Ding, Yuantao,Huang, Zhirong,et al. Purified self-amplified spontaneous emission free-electron lasers with slippage-boosted filtering[J]. PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS,2013,16(1).
APA Xiang, Dao,Ding, Yuantao,Huang, Zhirong,&Deng, Haixiao.(2013).Purified self-amplified spontaneous emission free-electron lasers with slippage-boosted filtering.PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS,16(1).
MLA Xiang, Dao,et al."Purified self-amplified spontaneous emission free-electron lasers with slippage-boosted filtering".PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 16.1(2013).
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