Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser

WU Ai-Lin; JIA Qi-Ka; LI He-Ting

doi:10.1088/1674-1137/37/6/068101

Chinese Physics C> 2013, Vol. 37> Issue(6) : 068101 DOI: 10.1088/1674-1137/37/6/068101

Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser

Abstract
HTML
Reference
Related

PDF

Abstract：
In this paper, the harmonics suppression effect of quasi-periodic undulators (QPUs) in self-amplified spontaneous emission free-electron laser (SASE FEL) is investigated. The numerical results show that the harmonics power is reduced by using QPUs, but the fundamental radiation power also has a pronounced decrease as the saturation length gets very long. The cases of employing QPUs as parts of undulators are studied. The calculations show that if the fraction of QPUs and their offgap are appropriate in an undulator system, the harmonics radiation could be suppressed remarkably, meanwhile the fundamental saturation length does not increase too much.

[1]	Lian-Min Zheng , Ying-Chao Du , Chuan-Xiang Tang , Wei Gai . Effects of laser pulse heating of copper photocathodes on high-brightness electron beam production at blowout regime. Chinese Physics C, 2017, 41(6): 067002. doi: 10.1088/1674-1137/41/6/067002
[2]	Abdurrahim , A. D. Ghodke . Effect of undulators on the stored electron beam of Indus-2. Chinese Physics C, 2015, 39(7): 077002. doi: 10.1088/1674-1137/39/7/077002
[3]	Ahmed M. M. Elsied , Nasr A. M. Hafz , LI Song , Mohammad Mirzaie , Thomas Sokollik , ZHANG Jie . Generation of high-quality electron beams from a laser-based advanced accelerator. Chinese Physics C, 2015, 39(6): 067003. doi: 10.1088/1674-1137/39/6/067003
[4]	MI Zheng-Hui , ZHAO Dan-Yang , SUN Yi , PAN Wei-Min , LIN Hai-Ying , LU Xiang-Yang , QUAN Sheng-Wen , LUO Xing , LI Ming , YANG Xing-Fan , WANG Guang-Wei , DAI Jian-Ping , LI Zhong-Quan , MA Qiang , SHA Peng . Design and test of frequency tuner for a CAEP high power THz free-electron laser. Chinese Physics C, 2015, 39(2): 028102. doi: 10.1088/1674-1137/39/2/028102
[5]	JIA Qi-Ka . An analysis of undulator optimization in self-seedingfree electron lasers. Chinese Physics C, 2014, 38(8): 088101. doi: 10.1088/1674-1137/38/8/088101
[6]	LI He-Ting , JIA Qi-Ka . Physical design of a wavelength tunable fully coherent VUV source using a self-seeding free electron laser. Chinese Physics C, 2014, 38(5): 058101. doi: 10.1088/1674-1137/38/5/058101
[7]	LIN Chen , Van Tilborg , GUO Zhi-Yu . Observation of optical transition radiation from electron beams generated by laser plasma accelerator. Chinese Physics C, 2013, 37(2): 027003. doi: 10.1088/1674-1137/37/2/027003
[8]	WU Dai , YANG Ren-Jun , BAI Wei , LI Peng , LI Ming , YANG Xing-Fan . Design study of an improved laser wire system for electron beam measurement. Chinese Physics C, 2013, 37(10): 108101. doi: 10.1088/1674-1137/37/10/108101
[9]	Reza Khazaeinezhad , Mahdi Esmaeilzadeh . Electron acceleration in the inverse free electron laser with a helical wiggler by axial magnetic field and ion-channel guiding. Chinese Physics C, 2012, 36(9): 879-885. doi: 10.1088/1674-1137/36/9/015
[10]	DENG Hai-Xiao , LIN Tang-Yu , YAN Jun , WANG Dong , DAI Zhi-Min . Three-dimensional numerical investigations of the laser-beam interactions in an undulator. Chinese Physics C, 2011, 35(3): 308-312. doi: 10.1088/1674-1137/35/3/018
[11]	DENG Hai-Xiao , DAI Zhi-Min . Ultra-high order harmonic generation via a free electron laser mechanism. Chinese Physics C, 2010, 34(8): 1140-1147. doi: 10.1088/1674-1137/34/8/020
[12]	DENG Hai-Xiao , BEI Hua , DAI Zhi-Min . Three dimensional study of harmonic operation at the Shanghai deep ultraviolet free electron laser. Chinese Physics C, 2010, 34(1): 115-120. doi: 10.1088/1674-1137/34/1/021
[13]	CHEN Jin-Gen , XU Wang , WANG Hong-Wei , GUO Wei , MA Yu-Gang , CAI Xiang-Zhou , LU Guang-Cheng , XU Yi , PAN Qiang-Yan , YUAN Ren-Yong , XU Jia-Qiang , YAN Zhe , FAN Gong-Tao , SHEN Wen-Qing . Transmutation of nuclear wastes using photonuclear reactions triggered by Compton backscattering photons at the Shanghai laser electron gamma source. Chinese Physics C, 2008, 32(8): 677-680. doi: 10.1088/1674-1137/32/8/019
[14]	GUO Wei , XU Yi , CHEN Jin-Gen , MA Yu-Gang , XU Wang , CAI Xiang-Zhou , WANG Hong-Wei . Shanghai laser electron gamma source and its applications. Chinese Physics C, 2008, 32(S2): 190-193.
[15]	DENG Hai-Xiao , DAI Zhi-Min . Design of cascading two stages of high gain harmonic generation scheme based on Shanghai deep ultraviolet free electron laser. Chinese Physics C, 2008, 32(3): 236-242. doi: 10.1088/1674-1137/32/3/016
[16]	DENG Hai-Xiao , DAI Zhi-Min . Gain of harmonic generation in high gain free electron laser. Chinese Physics C, 2008, 32(4): 297-302. doi: 10.1088/1674-1137/32/4/012
[17]	MA Qiao-Sheng , LI Zheng-Hong , MENG Fan-Bao , GAN Yan-Qing , LIU Zhong , CHANG An-Bi , ZHOU Chuan-Ming . Experimental Investigation Of repetitive X-band Quasi-Periodic RF Cavity for High Power Microwave Soruce. Chinese Physics C, 2005, 29(10): 1002-1005.
[18]	DING Yuan-Tao , HUANG Sen-Lin , ZHAO Kui , QUAN Sheng-Wen , XIANG Rong , WANG Yu-Gang , CHEN Jia-Er . Study on Optimization of PKU SASE FEL. Chinese Physics C, 2004, 28(4): 441-445.
[19]	DAI Zhi-Min . Theory of a Double-Undulator Free-Electron Laser. Chinese Physics C, 2004, 28(7): 775-780.
[20]	FU Shi-Nian , GUAN Xia-Ling , FANG Shou-Xian . Equipartitioning Design Method of a Quasi-Periodic Focusing-Accelerating Coupled System. Chinese Physics C, 2002, 26(1): 79-86.

Access

Get Citation

WU Ai-Lin, JIA Qi-Ka and LI He-Ting. Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser[J]. Chinese Physics C, 2013, 37(6): 068101. doi: 10.1088/1674-1137/37/6/068101

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2012-07-17
Revised: 2012-08-28

Article Metric

Article Views(1943)
PDF Downloads(220)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser

Received Date: 2012-07-17
Accepted Date: 2012-08-28
Available Online: 2013-06-05

Abstract: In this paper, the harmonics suppression effect of quasi-periodic undulators (QPUs) in self-amplified spontaneous emission free-electron laser (SASE FEL) is investigated. The numerical results show that the harmonics power is reduced by using QPUs, but the fundamental radiation power also has a pronounced decrease as the saturation length gets very long. The cases of employing QPUs as parts of undulators are studied. The calculations show that if the fraction of QPUs and their offgap are appropriate in an undulator system, the harmonics radiation could be suppressed remarkably, meanwhile the fundamental saturation length does not increase too much.