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	Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching
	Ding YZ(丁云泽) ; Du YC(杜应超) ; Zhang Z(张振) ; Huang WH(黄文会) ; DING Yun-Ze ; DU Ying-Chao ; ZHANG Zhen ; HUANG Wen-Hui
	2016-03-30 ; 2016-03-30
关键词	beam compression ballistic bunching Thomson scattering X-ray source O434.1
其他题名	Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching
中文摘要	Increasing the peak brightness is beneficial to various applications of the Thomson scattering X-ray source.A higher peak brightness of the scattered X-ray pulse demands a shorter scattering electron beam realized by beam compression in the electron beam-line.In this article,we study the possibility of compressing the electron beam in a typical S-band normal conducting photo-injector via ballistic bunching,through just adding a short RF linac section right behind the RF gun,so as to improve the peak brightness of the scattered x-ray pulse.Numerical optimization by ASTRA demonstrates that the peak current can increase from 50 A to>300 A for a 500 pC,10ps FWHM electron pulse,while normalized transverse RMS emittance and RMS energy spread increases very little.Correspondingly,the peak brightness of the Thomson scattering X-ray source is estimated to increase about three times.; Increasing the peak brightness is beneficial to various applications of the Thomson scattering X-ray source. A higher peak brightness of the scattered X-ray pulse demands a shorter scattering electron beam realized by beam compression in the electron beam-line. In this article, we study the possibility of compressing the electron beam in a typical S-band normal conducting photo-injector via ballistic bunching, through just adding a short RF linac section right behind the RF gun, so as to improve the peak brightness of the scattered x-ray pulse. Numerical optimization by ASTRA demonstrates that the peak current can increase from 50 A to > 300 A for a 500 pC, 10 ps FWHM electron pulse, while normalized transverse RMS emittance and RMS energy spread increases very little. Correspondingly, the peak brightness of the Thomson scattering X-ray source is estimated to increase about three times.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143197]
专题	清华大学
推荐引用方式 GB/T 7714	Ding YZ,Du YC,Zhang Z,et al. Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching[J],2016, 2016.
APA	丁云泽.,杜应超.,张振.,黄文会.,DING Yun-Ze.,...&HUANG Wen-Hui.(2016).Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching..
MLA	丁云泽,et al."Simulation study of a photo-injector for brightness improvement in Thomson scattering X-ray source via ballistic bunching".(2016).

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