High Power Laser and Particle Beams, Volume. 34, Issue 11, 113001(2022)
Longtime operation of S-band multi-beam relativistic klystron amplifier
Figures & Tables(10)
Fig. 3. Output microwave waveform (a) and electron velocity (b) of four-cavity RKA simulation by CST
Fig. 5. Output microwave waveforms at different working time. C3-detected waveform, C4-radio frequency waveform
Fig. 6. Last frame waveforms at 20 Hz@10 min. C3-detected waveform，C4-radio frequency waveform
Table 1. High frequency parameters of cavities
View tableView in ArticleTable 1. High frequency parameters of cavities
cavity gap width/mm (R/Q)/ Ω M initialization frequency/GHz input cavity 14.0 13.2 0.886 2.875 idler cavity 1# 12.0 14.2 0.866 2.885 idler cavity 2# 13.5 15.2 0.865 2.908 output cavity 16.0 18.1 0.841 2.876
Table 2. Voltage effects on electron beam modulation and device efficiency
View tableView in ArticleTable 2. Voltage effects on electron beam modulation and device efficiency
voltage/kV modulation depth efficiency/% electron reversal (v/c) 520 1.10 42.6 −0.05 530 1.10 40.9 −0.08 540 1.10 42.9 0 550 1.09 43.6 0 560 1.07 42.0 −0.07 570 1.04 40.% −0.17 580 0.99 39.8 −0.03
Table 3. Current effects on electron beam modulation and device efficiency
View tableView in ArticleTable 3. Current effects on electron beam modulation and device efficiency
current/A modulation depth (I1/Io) efficiency/% electron reversal (v/c) 278×14 0.98 37.0 0.25 298×14 1.04 40.0 −0.03 318×14 1.08 42.0 −0.04 338×14 1.09 43.6 0 358×14 1.09 42.0 −0.13 378×14 1.08 40.9 −0.12 398×14 1.07 43.5 −0.16
Table 4. High frequency parameters and drifting tube parameter of four-cavity RKA
View tableView in ArticleTable 4. High frequency parameters and drifting tube parameter of four-cavity RKA
cavity gap width/mm oscillation frequency/GHz axial position/mm input cavity 14 2.88 0 idler cavity 1# 12 2.891 90 idler cavity 2# 13.5 2.936 180 output cavity 16 2.879 485
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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
Paper Information
Category: High Power Microwave Technology
Received: Jun. 12, 2022
Accepted: --
Published Online: Oct. 18, 2022
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