CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
The detuning effect of crystal monochromator in self-seeding and oscillator free electron laser
Yang, C; Tsai, CY; Zhou, GQ; Wang, XF; Hong, Y; Krug, ED; Li, A; Deng, HX; He, DH; Wu, JH
2019
Source PublicationOPTICS EXPRESS
ISSN1094-4087
Volume27Issue:9Pages:13229—13239
Subtype期刊论文
AbstractSelf-amplified spontaneous emission (SASE) free electron laser (FEL) is capable of generating ultra-short, high power and high brightness X-ray pulses, but its temporal coherence is poor. Self-seeding scheme is an approach to improve the temporal coherence by employing a crystal monochromator. The crystal detuning effect is the phenomenon that the Bragg angle deviates from the middle of the reflection domain due to the refraction effect, and can affect the seed energy efficiency of hard X-ray self-seeding (HXRSS) FEL. In this paper, we introduce a novel idea to maximize the seed energy efficiency by tuning the incident angle off the Bragg condition where the Bragg photon energy is corresponding to the central photon energy of the input X-ray pulse. We present the numerical analysis of the detuning effect in different reflecting atomic planes and different asymmetry angles of diamond crystal. Moreover, we analyze how the detuning affects the seed efficiency of HXRSS FEL, and discuss the application to X-ray FEL oscillator (XFELO). We find when the detuning is much smaller than the bandwidth of input X-ray pulse, we can neglect the detuning effect. However, if the detuning is much larger than or comparable with the bandwidth of input X-ray pulse, the detuning effect can not be ignored. This work can give a guidance to HXRSS FEL and XFELO commissioning for high efficiency FEL output. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
KeywordOPERATION SCHEME FEL
DOI10.1364/OE.27.013229
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31854
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China;
2.SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA;
3.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Wuhan 430074, Hubei, Peoples R China;
4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China;
5.Chinese Acad Sci, UCAS, Beijing 100049, Peoples R China;
6.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China;
7.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;
8.Univ Texas Arlington, 500 W First St, Arlington, TX 76019 USA;
9.Seabreeze High Sch, 2700 N Oleander Ave, Daytona Beach, FL 32118 USA;
10.Saratoga High Sch, 20300 Herriman Ave, Saratoga, CA 95070 USA
Recommended Citation
GB/T 7714
Yang, C,Tsai, CY,Zhou, GQ,et al. The detuning effect of crystal monochromator in self-seeding and oscillator free electron laser[J]. OPTICS EXPRESS,2019,27(9):13229—13239.
APA Yang, C.,Tsai, CY.,Zhou, GQ.,Wang, XF.,Hong, Y.,...&Wu, JH.(2019).The detuning effect of crystal monochromator in self-seeding and oscillator free electron laser.OPTICS EXPRESS,27(9),13229—13239.
MLA Yang, C,et al."The detuning effect of crystal monochromator in self-seeding and oscillator free electron laser".OPTICS EXPRESS 27.9(2019):13229—13239.
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