Development and Test of a 400-kV PFN Marx With Compactness and Rise Time Optimization

Lassalle, F.; Morell, A.; Loyen, A.; Chanconie, T.; Roques, Bernárd P.; Toury, M.; Vézinet, R.

doi:10.1109/tps.2018.2837344

Cited by 22 publications

(10 citation statements)

References 10 publications

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“…The PFN-Marx generator has advantages in impedance matching and setting the pulse width. The characteristic impedance and the output pulse width can be adjusted by setting the inductance and the capacitance of the PFN properly [31,32]. The pulse width, the characteristic impedance, and the output voltage on the matched load are as follows:…”

Section: Pulsed-power Ssystem (10-stage Pfn-marx Generator)mentioning

confidence: 99%

Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator

Kim

2022

Electronics

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The optimum hole diameter of a ring reflector was experimentally investigated using an axial virtual cathode oscillator (vircator) to enhance its microwave power. The ring reflector enhances the microwave power from the axial vircator by forming a cavity. The ring reflector was installed 9 mm behind the anode. The optimum hole diameter of the ring reflector was analyzed through simulations and experiments by changing the diameter from 60 mm to 160. PIC simulations show that the maximum peak microwave power was generated when the hole diameter was 116 mm and enhanced by 210%. The experiments show similar results to the simulations. The largest peak maximum power was 23.67 MW when the hole diameter was 120 mm. The simulations show that the dominant microwave frequency was formed between 5.33 GHz and 6.7 GHz. The experiments show that the dominant microwave frequency was formed between 5.3 GHz and 5.8 GHz. The frequency trend was approximately similar to that of the simulation results. However, the trend depending on the hole diameter was not as obvious as in the simulations. Although the frequency change was not as clear as in the simulations, experiments show that the hole diameter of the ring reflector affects the vircator operation.

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Section: Pulsed-power Ssystem (10-stage Pfn-marx Generator)mentioning

confidence: 99%

Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator

Kim

2022

Electronics

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“…This type of driver can provide relatively short rise times (of a few nanoseconds) and rectangular voltage pulses that are, in all respects, more beneficial than those formed by Marx generators or modular pulse-forming networks (PFNs) [2]. The only worthy exception is an innovative "zigzag" PFN Marx design that provides a pulse rise time of 5 ns at an output voltage of 400 kV in a beam diode of 100 Ω (burst mode operation for 10 s at 100 Hz) [3].…”

Section: Introductionmentioning

confidence: 99%

High-Voltage Drivers Based on Forming Lines with Extended Quasi-Rectangular Pulses for High-Power Microwave Oscillators

et al. 2022

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The paper considers such modifications of an ordinary pulse-forming line (PFL) as double-width and triple-width forming lines (DWFL, TWFL) built around the PFL by nesting one and two additional uncharged lines, respectively, into its free volume inside the inner conductor of the PFL. The theoretical analysis is supported by simulation and experimental data, showing that the TWFL provides a 3-fold increase in the voltage pulse width and that it can be further increased by an arbitrary integer factor k. The results of the numerical simulations also show the electric field behavior and other features, including the edge effect in the TWFL. The proposed method opens up new opportunities for designing compact high-power microwace (HPM) sources.

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“…Firstly, the literature on the research of the Marx generator over the past few decades has been reviewed. Institutes around the world, including the French-German Research Institute of Saint-Louis (ISL), Texas Technology University (TTU), Commissariat à l'Energie Atomique et aux Energies Alternatives (CEAE), Applied Physical Electronics L. C. (APELC), etc., have developed a series of compact Marx generators with different circuit topologies and the typical parameters of the generators are listed in Table 1 [10][11][12][13][14][15]. Generally, the ratio of storage energy to volume (E/V) and the ratio of power to weight (P/W) are calculated to describe the compactness of the generator.…”

Section: Introductionmentioning

confidence: 99%

A Compact Modular 5 GW Pulse PFN-Marx Generator for Driving HPM Source

et al. 2021

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A compact and modular pulse forming network (PFN)-Marx generator with output parameters of 5 GW, 500 kV, and 30 Hz repetition is designed and constructed to produce intense electron beams for the purpose of high-power microwave (HPM) generation in the paper. The PFN-Marx is composed by 22 stages of PFN modules, and each module is formed by three mica capacitors (6 nF/50 kV) connected in parallel. Benefiting from the utilization of mica capacitors with high energy density and a mini-trigger source integrated into the magnetic transformer and the magnetic switch, the compactness of the PFN-Marx system is improved significantly. The structure of the PFN module, the gas switch unit, and the connection between PFN modules and switches are well designed for modular realization. Experimental results show that this generator can deliver electrical pulses with the pulse width of 100 ns and amplitude of 500 kV on a 59-ohm water load at a repetition rate of 30 Hz in burst mode. The PFN-Marx generator is fitted into a cuboid stainless steel case with the length of 80 cm. The ratio of storage energy to volume and the ratio of power to weight of the PFN-Marx generator are calculated to be 6.5 J/L and 90 MW/kg, respectively. Furthermore, utilizing the generator to drive the transit time oscillator (TTO) at a voltage level of 450 kV, a 100 MW microwave pulse with the pulse width of 20 ns is generated.

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Development and Test of a 400-kV PFN Marx With Compactness and Rise Time Optimization

Cited by 22 publications

References 10 publications

Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator

Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator

High-Voltage Drivers Based on Forming Lines with Extended Quasi-Rectangular Pulses for High-Power Microwave Oscillators

A Compact Modular 5 GW Pulse PFN-Marx Generator for Driving HPM Source

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