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High Power Laser and Particle Beams, Volume. 34, Issue 3, 031016(2022)

Simulation studies of external seeding schemes for Shanghai soft X-ray free electron laser

Weijie Fan1,2, Chao Feng3、*, and Minghua Zhao1
Author Affiliations
  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (2)
    References (19)
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    Figures & Tables(9)
    Schematic layout of the SXFEL

    Fig. 1. Schematic layout of the SXFEL

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    Schematic layout of the cascade EEHG-HGHG mode

    Fig. 2. Schematic layout of the cascade EEHG-HGHG mode

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    Schematic layout of the single stage EEHG mode

    Fig. 3. Schematic layout of the single stage EEHG mode

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    Cascade EEHG-HGHG mode FEL radiation at the exit of the first radiator

    Fig. 4. Cascade EEHG-HGHG mode FEL radiation at the exit of the first radiator

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    Cascade EEHG-HGHG mode FEL radiation at the exit of the second radiator

    Fig. 5. Cascade EEHG-HGHG mode FEL radiation at the exit of the second radiator

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    Single stage EEHG FEL radiation at the exit of undulator

    Fig. 6. Single stage EEHG FEL radiation at the exit of undulator

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    Timing jitter and power jitter of the seed lasers in the cascade EEHG-HGHG mode

    Fig. 7. Timing jitter and power jitter of the seed lasers in the cascade EEHG-HGHG mode

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    Timing jitter and power jitter of the seed lasers in the single stage EEHG mode

    Fig. 8. Timing jitter and power jitter of the seed lasers in the single stage EEHG mode

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    • Table 1. Main parameters in the simulations

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      Table 1. Main parameters in the simulations

      energy/MeVpeak current/Asliced energy spread/keVnormarlized emittance/(mm mrad)
      14008001001.5
      bunch length/fspower of seed lasers/MWmudulator period numbersmudulator period length/m
      500(FWHM)200/80020/20/1000.08/0.08/0.03
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    Weijie Fan, Chao Feng, Minghua Zhao. Simulation studies of external seeding schemes for Shanghai soft X-ray free electron laser[J]. High Power Laser and Particle Beams, 2022, 34(3): 031016

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    Paper Information

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    Received: Jul. 8, 2021

    Accepted: --

    Published Online: Mar. 28, 2022

    The Author Email: Chao Feng (fengchao@zjlab.org.cn)

    DOI:10.11884/HPLPB202234.210262

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology