A compact PFN-Marx repetitive pulsed power source

Wu Youcheng; Feng Chuanjun; Fu Jiabin; Dai Wenfeng; Cao Longbo

doi:10.11884/HPLPB202436.230354

Volume 36 Issue 5

Apr. 2024

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Wu Youcheng, Feng Chuanjun, Fu Jiabin, et al. A compact PFN-Marx repetitive pulsed power source[J]. High Power Laser and Particle Beams, 2024, 36: 055019. doi: 10.11884/HPLPB202436.230354

Citation:

Wu Youcheng, Feng Chuanjun, Fu Jiabin, et al. A compact PFN-Marx repetitive pulsed power source[J]. High Power Laser and Particle Beams, 2024, 36: 055019. doi: 10.11884/HPLPB202436.230354

Wu Youcheng, Feng Chuanjun, Fu Jiabin, et al. A compact PFN-Marx repetitive pulsed power source[J]. High Power Laser and Particle Beams, 2024, 36: 055019. doi: 10.11884/HPLPB202436.230354

Citation:

Wu Youcheng, Feng Chuanjun, Fu Jiabin, et al. A compact PFN-Marx repetitive pulsed power source[J]. High Power Laser and Particle Beams, 2024, 36: 055019. doi: 10.11884/HPLPB202436.230354

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A compact PFN-Marx repetitive pulsed power source

doi: 10.11884/HPLPB202436.230354

Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, P.O.Box 919-108, Mianyang 621900, China

Received Date: 2023-10-16
Accepted Date: 2024-03-25
Rev Recd Date: 2024-03-25

Available Online: 2024-04-15

Publish Date: 2024-04-28

Abstract

Abstract

A compact repetitive pulse power source is developed as an experimental platform for high power relativistic magnetron with low magnetic field. To obtain better output pulse waveform with a compact structure, the pulsed power source designed based on PFN-Marx technology has a coaxial structure. A circular pulse forming net (PFN) is devised out with the impedance of 4 Ω, working voltage of 50 kV, and electrical length of 53 ns, consisting of 13 ceramic capacitors with the capacitance of 1nF. Two PFN devices in series by a gas switch and an insulation plate form a circular high-voltage pulse generation module. Multiple pulse generation modules are coaxial and stacked in a metal cylinder. Inductive isolation is used between the modules. After all switches are turned on, all modules are discharged in series to generate a fast rising-time high-power square wave pulse. Moreover, repetitive operation is achieved through synchronous control of the trigger switch and charging power supply. In experiments the 22-stage PFN-Marx pulsed power source developed was charged to 51 kV, and a high-voltage square wave pulse of 516 kV was obtained on a load of 84 Ω, with pulse width (FWHM) of 104 ns, flat top of 63 ns and rising-time of 11 ns. This power source can operate stably at a repetition rate of 20 Hz for 15 s.
- pulse forming net,
- Marx generator,
- pulsed power,
- repetitive,
- compact

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References(19)

References

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