5-GW Tesla-type pulse generator based on a mixed pulse-forming line

To shorten the length of the pulse-forming line (PFL) and generate pulses with good flat-top quality, a 5-GW Tesla-type pulse generator based on a mixed PFL is developed in this paper to produce intense electron beams and generate high-power microwaves (HPMs). The mixed PFL is composed of a coaxial...

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Bibliographic Details
Published in:Review of scientific instruments 2020-07, Vol.91 (7), p.074710-074710
Main Authors: Li, Rui, Su, Jiancang, Zeng, Bo, Yu, Binxiong, Cheng, Jie, Zhao, Liang, Xu, Xiudong, Qiu, Xudong
Format: Article
Language:English
Subjects:
Electron beams
Electrons
High power microwaves
Load matching
Pulse generators
Scientific apparatus & instruments
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Summary:To shorten the length of the pulse-forming line (PFL) and generate pulses with good flat-top quality, a 5-GW Tesla-type pulse generator based on a mixed PFL is developed in this paper to produce intense electron beams and generate high-power microwaves (HPMs). The mixed PFL is composed of a coaxial PFL and a multistage series annular PFL, which, in turn, consists of 18 coaxial-output capacitor-loaded annular PFL modules in series. The generator can produce quasi-square electrical pulses with a width of 43 ns and a peak power of 5 GW on a matched load. In experiments where it is used to drive a relative backward-wave oscillator to generate HPMs, the results show that the HPM frequency is 16.15 GHz and the power is 1.06 GW with an efficiency of 25% when the voltage of the diode is 620 kV and the beam current is 6.9 kA.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0008970