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Acta Optica Sinica, Volume. 42, Issue 11, 1134016(2022)

Performance Parameters and Stability Studies on FEL-III Beamline of Shanghai High Repetition Rate XFEL and Extreme Light Facility

Zheng Qi1, Nanshun Huang2,3, Haixiao Deng1、*, Bo Liu1, and Dong Wang1
Author Affiliations
  • 1Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201200, China
  • 2Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(9)
    Performance parameters and stability of 15 keV photon beam size, divergence, current profile, and FEL radiation pulses considering shot noise using a normal ideal Gaussian distribution electron beam and a start-to-end double-peak distribution electron beam. (a)(d) Photon beam size; (b)(e) divergence; (c)(f) current profile and FEL radiation pulses

    Fig. 1. Performance parameters and stability of 15 keV photon beam size, divergence, current profile, and FEL radiation pulses considering shot noise using a normal ideal Gaussian distribution electron beam and a start-to-end double-peak distribution electron beam. (a)(d) Photon beam size; (b)(e) divergence; (c)(f) current profile and FEL radiation pulses

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    Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension for lateral position and incident angle jitter of 10% (RMS) of initial beam when irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

    Fig. 2. Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension for lateral position and incident angle jitter of 10% (RMS) of initial beam when irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

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    FEL stable peak power varying with quadrupole misplacement in x and y directions. (a) x direction; (b) y direction

    Fig. 3. FEL stable peak power varying with quadrupole misplacement in x and y directions. (a) x direction; (b) y direction

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    Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering a 0.5 μm/0.5 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

    Fig. 4. Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering a 0.5 μm/0.5 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

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    Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering comprehensive effect from shot noise, transverse jitter of 10% (RMS) of initial beam size and beam divergence, and 0.5 μm/0.5 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

    Fig. 5. Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering comprehensive effect from shot noise, transverse jitter of 10% (RMS) of initial beam size and beam divergence, and 0.5 μm/0.5 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

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    Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering comprehensive effect from increased error sources of transverse jitter of 20% (RMS) of initial beam size and beam divergence and 1.0 μm/1.0 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

    Fig. 6. Output parameters and stability of photon beam size, divergence, position in x/y dimension, and pointing angle in x/y dimension considering comprehensive effect from increased error sources of transverse jitter of 20% (RMS) of initial beam size and beam divergence and 1.0 μm/1.0 μm quadrupole misplacement in x/y dimension when FEL irradiance energy is 10 keV. (a) Photon beam size; (b) divergence; (c) position in x/y dimension; (d) pointing angle in x/y dimension

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    • Table 1. SHINE FEL-III beamline parameters

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      Table 1. SHINE FEL-III beamline parameters

      ParameterValue
      Beam energy /GeV8
      Slice energy spread /%0.01
      Normalized emittance /(μm·rad)0.5
      Charge /pC100
      Peak current /A1500
      Undulator period length /mm16
      Undulator segment length /m4
      Undulator segment number40
      Photon energy /keV10--25

    • Table 2. SHINE FEL-III photon beam parameters

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      Table 2. SHINE FEL-III photon beam parameters

      ParameterValue 1Value 2
      Photon energy /keV1015
      Pulse energy /μJ278143
      Bandwidth /%0.0660.051
      Pulse length (FWHM) /μm1210
      Spot size (FWHM) /μm13085
      Divergence (FWHM) /μrad1.901.58

    • Table 3. FEL-III photon beam performance parameters and stability%

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      Table 3. FEL-III photon beam performance parameters and stability%

      Considering factorBeam sizeDivergencePosition in x/yPointing angle in x/y
      Transverse jitter4.03.63.1/6.71.6/1.4
      Quadrupole misplacement1.51.23.0/ 2.51.5/1.3
      Transverse jitter & quadrupole misplacement4.84.15.4/7.61.2/1.9
      Double transverse jitter & quadrupole misplacement17.016.020.0/13.03.4/3.0
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    Zheng Qi, Nanshun Huang, Haixiao Deng, Bo Liu, Dong Wang. Performance Parameters and Stability Studies on FEL-III Beamline of Shanghai High Repetition Rate XFEL and Extreme Light Facility[J]. Acta Optica Sinica, 2022, 42(11): 1134016

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    Paper Information

    Category: X-Ray Optics

    Received: Feb. 9, 2022

    Accepted: Apr. 18, 2022

    Published Online: Jun. 3, 2022

    The Author Email: Deng Haixiao (denghaixiao@zjlab.org.cn)

    DOI:10.3788/AOS202242.1134016

    Topics

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