• High Power Laser and Particle Beams
  • Vol. 34, Issue 4, 044002 (2022)
Huanxiang Tuo, Baogen Sun*, Qing Luo, Fangfang Wu, Tianyu Zhou, and Ping Lu
Author Affiliations
  • National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
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    DOI: 10.11884/HPLPB202234.210261 Cite this Article
    Huanxiang Tuo, Baogen Sun, Qing Luo, Fangfang Wu, Tianyu Zhou, Ping Lu. Design and simulation of the coupler of single resonant cavity bunch length monitor[J]. High Power Laser and Particle Beams, 2022, 34(4): 044002 Copy Citation Text show less
    Lumped circuit of low-pass prototype filter
    Fig. 1. Lumped circuit of low-pass prototype filter
    Attenuation-frequency characteristics of low-pass prototype filter
    Fig. 2. Attenuation-frequency characteristics of low-pass prototype filter
    Structure of low pass filter
    Fig. 3. Structure of low pass filter
    S parameters of low pass filter
    Fig. 4. S parameters of low pass filter
    Circuit of diaphragm-loaded waveguide band-pass filter
    Fig. 5. Circuit of diaphragm-loaded waveguide band-pass filter
    3D model of band pass filter
    Fig. 6. 3D model of band pass filter
    Cutaway view of band pass filter
    Fig. 7. Cutaway view of band pass filter
    S parameters of band pass filter
    Fig. 8. S parameters of band pass filter
    Structure of bunch length monitor
    Fig. 9. Structure of bunch length monitor
    Electric field distribution of coupling mode
    Fig. 10. Electric field distribution of coupling mode
    Port output signals
    Fig. 11. Port output signals
    energy/MeVenergy spread/keVbunch charge/nCbunch length/psmicro-pulse repetition rate/GHz
    25−60<2401.02−50.476
    Table 1. Electron beam parameters of FELiChEM
    d01/mm d12/mm a/mm b/mm l0/mm l1/mm l2/mm t/mm
    10.544636.2697828.49912.6241521.1922.471.2
    Table 2. Parameters of band pass filter
    bunch length/psVTM010/10−7VTM030/10−7VTM010/VTM030measured bunch length/psrelative error/%
    22.1750.9662.2512.031.50
    32.1740.9592.2662.990.33
    52.1680.9372.3134.911.80
    102.1470.8402.5579.930.70
    152.1160.7003.02414.940.40
    202.0740.5423.82819.970.15
    Table 3. Simulation results of bunch length
    Huanxiang Tuo, Baogen Sun, Qing Luo, Fangfang Wu, Tianyu Zhou, Ping Lu. Design and simulation of the coupler of single resonant cavity bunch length monitor[J]. High Power Laser and Particle Beams, 2022, 34(4): 044002
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