期刊
SCIENCE BULLETIN
卷 61, 期 15, 页码 1202-1212出版社
ELSEVIER
DOI: 10.1007/s11434-016-1140-9
关键词
X-ray free-electron lasers; EEHG; Coherent soft X-ray; Harmonic lasing; Water window
资金
- National Development and Reform Commission [2013]2347]
- National Natural Science Foundation of China [11475250, 11175240, 11275253, 11322550]
- National Basic Research Program of China [2015CB859700]
The echo-enabled harmonic generation (EEHG) scheme holds promising prospects for efficiently generating intense coherent radiation at very high harmonics of the initial seed laser. In this paper, we study the feasibility of operating the Shanghai X-ray free-electron laser test facility with a single stage EEHG setup. With a combination of existing numerical codes, start-to-end simulations considering various three-dimensional effects have been carried out to show the possible performance of the EEHG FEL. Simulation results demonstrate that a single stage EEHG can generate high power soft X-ray radiation pulses with narrow bandwidth directly from UV seed lasers. With the help of the harmonic lasing technique or upgraded linac, we also show the possibility of generating coherent soft X-ray radiation in the water window with a single stage EEHG.
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