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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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Proceedings ArticleDOI
27 Jun 1999
TL;DR: In this article, a relatively simple method for generating high-voltage (/spl sim/200 kV) trigger pulses with low jitter (spl sim+mn/1 ns) has been developed at the Nike KrF Laser Facility.
Abstract: A relatively simple method for generating high-voltage (/spl sim/200 kV) trigger pulses with low jitter (/spl sim/1 ns) has been developed at the Nike KrF Laser Facility. The output pulse (/spl sim/10 mJ) from a frequency-quadruple Nd:YAG laser is focused between the electrodes of a spark gap, which acts as the first-stage switch in a compact, eight-stage Marx generator. The spark gap is pressurized with a mixture of sulfur hexafluoride and air. The UV (266 nm) laser energy ionizes the SF/sub 6/, creating a spark which triggers the switch. A 20-cm focal length lens is used. The defocusing laser light then illuminates the remaining, self-breaking spark-gap switches in the Marx, pre-ionizing them. The Marx output is approximately 200 kV into 50 ohms, with a risetime of 2 ns. A single Marx is capable of triggering six 100-kV spark gaps via six 65-ohm cables in parallel, with an overall jitter of /spl plusmn/1 ns. A single laser triggers three Marxes; the trigger timing of each can be adjusted independently by changing the laser path lengths. The system uses off-the-shelf components throughout.

3 citations

Proceedings ArticleDOI
23 May 2004
TL;DR: In this paper, a new upgraded capillary discharge device was developed, which consists of a Marx generator, a pulse forming line, a gas-filled laser-triggered spark gap and a ceramic capillary.
Abstract: We are developing a new upgraded capillary discharge device. The assembled set-up consists of a Marx generator, a pulse forming line, a gas-filled laser-triggered spark gap and a ceramic capillary. Special attention has been paid to the design of the spark gap. The laser triggering of this spark gap ensures a very low jitter in comparison with the present capillary discharge device CAPEX, where the main spark gap works in a self-breakdown regime. The description of the assembled apparatus, the main predicted parameters of the designed device (such as capillary current, capillary current rise-rate, and voltage at the end of pulse forming line) are presented

3 citations

Proceedings ArticleDOI
01 Mar 1995
TL;DR: In this article, the design and testing of a trigatron spark gap capable of extended lifetime repetitive operation has been described at voltages of up to 500 kV at a repetition rate of 100 pps.
Abstract: This paper describes the design and testing of a trigatron spark gap capable of extended lifetime repetitive operation. The spark gap described has been operated at voltages of up to 500 kV at a repetition rate of 100 pps. The trigatron uses a source of negative ions to ensure an initiatory electron supply which results in sub-nanosecond jitter. A drawback of using trigatrons in repetitive pulsed power applications is that of trigger pin erosion. To minimise this effect, the region around the trigger electrode has been designed using an electrostatic modelling technique. An important consideration when evaluating trigatron performance is that of lifetime. The problems associated with short trigatron lifetimes are usually related to the erosion of the trigger pin resulting in insufficient field distortion of the main electrode region. An electrostatic model was developed which enabled the level of field distortion as a function of trigger pin dimensions and position to be evaluated. The operating lifetime of the spark gap was then predicted by considering the range of pin positions which would result in a field. Repetitive operation was achieved by the use of a pressurised air insulated Marx generator. (4 pages)

3 citations

Journal ArticleDOI
TL;DR: A pulse power system based on Marx generator and Blumlein pulse forming line has been built for generating high power microwaves and a simple method to eliminate prepulse voltage using a vacuum sparkgap and a resistor is given.
Abstract: A pulse power system (1 MV, 50 kA, and 100 ns) based on Marx generator and Blumlein pulse forming line has been built for generating high power microwaves. The Blumlein configuration poses a prepulse problem and hence the diode gap had to be increased to match the diode impedance to the Blumlein impedance during the main pulse. A simple method to eliminate prepulse voltage using a vacuum sparkgap and a resistor is given. Another fundamental approach of increasing the inductance of Marx generator to minimize the prepulse voltage is also presented. Experimental results for both of these configurations are given.

3 citations

Journal Article
TL;DR: In this article, an electrical insulation optimum design and electric field simulation of a 1 MV compact repetitive Marx generator filled with sulfur hexafluoride gas was performed, and two critical insulating regions in Marx generator,modular switch cavity and outer shell were well-designed with compact dimension base on the analysis of sulfur hexa-fluoride insulating property in static and pulse highvoltage environment.
Abstract: An electrical insulation optimum design and electric-field numerical simulation of a 1 MV compact repetitive Marx generator filled with sulfur hexafluoride gas was performed.Two critical insulating regions in Marx generator,modular switch cavity and outer shell were well-designed with compact dimension base on the analysis of sulfur hexafluoride insulating property in static and pulse high-voltage environment,3D electric-field numerical simulation results of the interested regions indicate that the current design meets the insulating requests of sulfur hexafluoride at 0.3 MPa.

3 citations


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