• High Power Laser and Particle Beams
  • Vol. 34, Issue 11, 113001 (2022)
Hua Huang, Shifeng Li, Limin Sun, Jie Tan, Peng Wang, Zhenbang Liu, and Qifan Xiang
Author Affiliations
  • Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, CAEP, Mianyang, 621900, China
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    DOI: 10.11884/HPLPB202234.220184 Cite this Article
    Hua Huang, Shifeng Li, Limin Sun, Jie Tan, Peng Wang, Zhenbang Liu, Qifan Xiang. Longtime operation of S-band multi-beam relativistic klystron amplifier[J]. High Power Laser and Particle Beams, 2022, 34(11): 113001 Copy Citation Text show less
    Optimization curves of AJDISK code
    Fig. 1. Optimization curves of AJDISK code
    Three dimensions’ simulation diagram of four-cavity RKA
    Fig. 2. Three dimensions’ simulation diagram of four-cavity RKA
    Output microwave waveform (a) and electron velocity (b) of four-cavity RKA simulation by CST
    Fig. 3. Output microwave waveform (a) and electron velocity (b) of four-cavity RKA simulation by CST
    Output cavity with water cooling collector
    Fig. 4. Output cavity with water cooling collector
    Output microwave waveforms at different working time. C3-detected waveform, C4-radio frequency waveform
    Fig. 5. Output microwave waveforms at different working time. C3-detected waveform, C4-radio frequency waveform
    Last frame waveforms at 20 Hz@10 min. C3-detected waveform,C4-radio frequency waveform
    Fig. 6. Last frame waveforms at 20 Hz@10 min. C3-detected waveform,C4-radio frequency waveform
    cavitygap width/mm (R/Q)/ Ω Minitialization frequency/GHz
    input cavity14.013.20.8862.875
    idler cavity 1#12.014.20.8662.885
    idler cavity 2#13.515.20.8652.908
    output cavity16.018.10.8412.876
    Table 1. High frequency parameters of cavities
    voltage/kVmodulation depthefficiency/%electron reversal (v/c)
    5201.1042.6−0.05
    5301.1040.9−0.08
    5401.1042.90
    5501.0943.60
    5601.0742.0−0.07
    5701.0440.%−0.17
    5800.9939.8−0.03
    Table 2. Voltage effects on electron beam modulation and device efficiency
    current/Amodulation depth (I1/Io) efficiency/%electron reversal (v/c)
    278×140.9837.00.25
    298×141.0440.0−0.03
    318×141.0842.0−0.04
    338×141.0943.60
    358×141.0942.0−0.13
    378×141.0840.9−0.12
    398×141.0743.5−0.16
    Table 3. Current effects on electron beam modulation and device efficiency
    cavitygap width/mmoscillation frequency/GHzaxial position/mm
    input cavity142.880
    idler cavity 1#122.89190
    idler cavity 2#13.52.936180
    output cavity162.879485
    Table 4. High frequency parameters and drifting tube parameter of four-cavity RKA
    Hua Huang, Shifeng Li, Limin Sun, Jie Tan, Peng Wang, Zhenbang Liu, Qifan Xiang. Longtime operation of S-band multi-beam relativistic klystron amplifier[J]. High Power Laser and Particle Beams, 2022, 34(11): 113001
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