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Marx generator

About: Marx generator is a research topic. Over the lifetime, 1276 publications have been published within this topic receiving 8970 citations.


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Journal Article
Xu Shuo1
TL;DR: In this article, an electro-optical measurement system based on the Kerr effect was constructed, which is capable of measuring the electric field on the surface of a vacuum insulator that is being stressed with a fast and high voltage.
Abstract: In order to help a correct design of a vacuum insulator used in a fast pulsed power device,so as to avoid the insulator flashover,an electro-optical measurement system based on Kerr effect was constructed.The system is capable of on-line measuring the electric field on the surface of a vacuum insulator that is being stressed with a fast and high voltage.The system is composed of 5 subsystems,including a fast high voltage source(100 ns,200~350 kV) based on a Marx generator and a pulse forming line,a detecting light source(532 nm,8 ns) based on a Nd:YAG laser,a synchronization system with a high noise-immunity,a Kerr effect cell in which a tested insulator is immersed in nitrobenzene liquid,and a phase-difference analyzer(Mach-Zehnder interferometer).The operation principles and the experimental results of the system and the subsystems were described.

5 citations

Proceedings ArticleDOI
03 Jul 1995
TL;DR: The Atlas pulsed power supply as discussed by the authors provides a current pulse to the experiment chamber from a set of 20, 3-Marx unit-wide modules radially positioned around a rectangular disk transmission-line system (total of 60 Marxes in parallel).
Abstract: The proposed Atlas pulsed power supply design provides a current pulse to the experiment chamber from a set of 20, 3-Marx-unit-wide modules radially positioned around a rectangular disk transmission-line system (total of 60 Marxes in parallel). The Atlas circuit is designed to be a near-critically-damped network with a total erected capacitance of 200 /spl mu/F at 600 kV. The justification for the necessary circuit resistance in this approach is based on reliability, fault tolerance and operational maintenance. Also the use of high energy-density capacitors that have lower tolerance to voltage reversal is a primary reason for the damping provided by significant series resistance. To obtain the damping there are two system resistors in the Atlas design. One resistor is a shunt element designed to damp the resonance caused by the relatively high-Q disk transmission-line capacitance and the Marx bank inductance. The second, more significant resistor is a series, fault-current limiting element that also performs the necessary damping for voltage reversal at the bank capacitors. The series resistor is the subject of this paper.

5 citations

Journal ArticleDOI
TL;DR: In this paper, a simplified UV-preionized long-pulse TEA CO2-laser amplifier is proposed, which is powered by a common Marx generator for both the preionization arc discharges and the main laser discharge.
Abstract: A simplified UV‐preionized long‐pulse TEA CO2‐laser amplifier is proposed, which is powered by a common Marx generator for both the preionization arc discharges and the main laser discharge. The measurements of small‐signal gain reveal that there exists an optimum capacitance for the capacitors which are provided in the preionization circuit for the control of preionization level. The physical interpretation for this is also given. A small‐signal gain higher than 3%/cm and an extraction energy of nearly 14 J/l (at the input energy level of nearly 1 J) have been achieved. It has also been demonstrated that the amplifier can amplify a long laser pulse of the order of microseconds without serious distortion of pulse waveform.

5 citations

Proceedings Article
18 Jul 2004
TL;DR: In this article, a high power Reflex Triode Virtual Cathode Oscillator (Vircator) at Texas Tech University is reported, which is driven by a 350 kV Marx generator with 60 ns, 20 ohm pulsed forming line.
Abstract: Experimental findings on a high power Reflex Triode Virtual Cathode Oscillator (Vircator) at Texas Tech University are reported. In order to optimize performance, changes to the AK gap distance were made. The AK gap was varied from 0.5 to 1.5 cm. The type of cathode material employed was velvet. Cathode radius was 2.5 cm. The Reflex Triode Vircator is driven by a 350 kV Marx generator with a 60 ns, 20 ohm pulsed forming line. Typical peak input power is 4 GW. The output microwave power is measured in the far-field with a waveguide to coax adapter. Thus far we have observed microwave peak power output as high as 330 MW corresponding to a peak power efficiency of ~ 11 %. In an effort to provide premodulation to the vircator region, reflecting strips were added in the downstream waveguide. This technique has been employed with success by this group with a coaxial Vircator.

5 citations

Journal ArticleDOI
TL;DR: In this article, a novel high-voltage pulse generator, which can output a near square waveform across the load, is proposed, which is composed of a conventional Marx generator, an LC filter and a metal-oxide varistor (MOV) in parallel with the load.
Abstract: This paper puts forward a novel high-voltage pulse generator, which can output a near square waveform across the load. The generator is composed of a conventional Marx generator, an LC filter and a metal-oxide varistor (MOV) in parallel with the load. The Marx generator and the filter form a two-section type-A Guillemin pulse forming network (PFN). The PFN outputs a near square waveform and the MOV further stabilizes the voltage because of the MOV's nonlinear resistivity. Circuit simulation verifies the working principle. Design parameters for the conventional PFN are derived. Considering the stray inductance of the filter, a more realistic PFN circuit is proposed and its parameters are derived. Preliminary experiments are conducted and verify the concept. Typical output waveforms have 20-30-ns rise time, 1000-1100-ns pulsewidth, and ~7-kV peak voltage. The pulse generator based on this concept is suitable to be used as a compact, long-pulse high power microwave modulator as it has a simple design, a well-defined flat top and it can output near constant voltage even if the load's impedance varies.

5 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202255
202132
202033
201951
201845