Author: Feng, C.
Paper Title Page
WEPAB065 Proposal for the Generation of Terawatt, Attosecond X-Ray Pulses in Free Electron Lasers 2723
 
  • Z. Wang, C. Feng, Z.T. Zhao
    SINAP, Shanghai, People's Republic of China
 
  A feasible novel method is proposed to generate attosecond terawatt X-ray radiation pulse in free electron lasers, which could find its application on multiple science fields. In our scheme, a chirped laser is employed to generate a chirped periodic current enhancement and a series of spatiotemporal shifters are applied between the undulator sections to generate ultra-short radiation pulse. Three-dimensional start-to-end simulations are carried out and the calculation results show that a 0.15nm X-ray pulse with the peak power of about 1TW and the pulse length of 0.1fs could be achieved in our scheme.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB065  
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WEPAB066 POP Experiment for the HB-HGHG Scheme at SXFEL 2727
SUSPSIK010   use link to see paper's listing under its alternate paper code  
 
  • K.S. Zhou, H.X. Deng, C. Feng, D. Wang
    SINAP, Shanghai, People's Republic of China
 
  Abstract High brightness, fully coherent and ultra-short free electron lasers (FEL) operating in the soft x-ray region are opening up new frontiers in many scientific fields. In this paper, we perform the design studies for the proof-of-principle experiment of the recently proposed HB-HGHG scheme at SXFEL test facility with a two-stage setup. The first stage of SXFEL is used for the generation of the coherent signal at 30th harmonic of the seed through the coherent harmonic generation process. Then this coherent signal is shifted ahead by the 'fresh bunch' chicane of SXFEL and initiates the strong coherent radiation in the radiator of the second stage of SXFEL. The output properties have been compared with the conventional EEHG and the two-stage cascaded HGHG with the same harmonic up-conversion number.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB066  
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