Design study for the cascaded HGHG experiment based on the SDUV-FEL

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	Design study for the cascaded HGHG experiment based on the SDUV-FEL
	Feng, C ; Zhang, M（张猛） ; Lin, GQ（林国强） ; Gu, Q（顾强） ; Deng, HX（邓海啸） ; Chen, JH（陈建辉） ; Wang, D（王东） ; Zhao, ZT（赵振堂）
刊名	CHINESE SCIENCE BULLETIN
	2012
卷号	57 期号:26
ISSN号	1001-6538
英文摘要	Cascading stages of high-gain harmonic generation (HGHG) free electron laser (FEL) is a promising way to produce fully coherent X-ray radiation. As a test facility for modern FEL R&D, the Shanghai deep ultraviolet FEL (SDUV-FEL) is now under upgrading for the cascading two stages of HGHG experiment. Since the energy of the electron beam is as low as about 185 MeV after upgrade, the total harmonic number of this two stages HGHG is only 2x2, and the wavelength of the final radiation is 196.5 nm which is the 4th harmonic of the 786 nm seed laser. With help of three-dimensional simulation codes, design studies on the FEL physics for the cascaded HGHG experiment are present based on the parameters of the upgraded SDUV-FEL facility. It is found from the simulation results that the part of the electron beam which has been used in the first stage can still generate powerful radiation in the radiator of the second stage, and this radiation will be difficult to be separated from the radiation generated by the fresh part of the electron beam. To overcome this problem, a novel method based on the energy spectrum of the electron beam is proposed in this paper to demonstrate the "fresh bunch" technique.
语种	英语
WOS记录号	WOS:000308239400006
公开日期	2013-12-05
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/13126]
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	Feng, C,Zhang, M,Lin, GQ,et al. Design study for the cascaded HGHG experiment based on the SDUV-FEL[J]. CHINESE SCIENCE BULLETIN,2012,57(26).
APA	Feng, C.,Zhang, M.,Lin, GQ.,Gu, Q.,Deng, HX.,...&Zhao, ZT.(2012).Design study for the cascaded HGHG experiment based on the SDUV-FEL.CHINESE SCIENCE BULLETIN,57(26).
MLA	Feng, C,et al."Design study for the cascaded HGHG experiment based on the SDUV-FEL".CHINESE SCIENCE BULLETIN 57.26(2012).