scispace - formally typeset
Search or ask a question
Topic

Marx generator

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


Papers
More filters
Proceedings ArticleDOI
13 Nov 2009
TL;DR: In this paper, a circuit topology proposed to replace the actual modulator circuit that supplies the 60 kV target voltage potential for the ion acceleration, at the ion source of the On-Line Isotope Mass Separator ISOLDE, located at the Proton-Synchrotron Booster PSB of the European Organisation for Nuclear Research CERN, is described.
Abstract: This paper describes a circuit topology proposed to replace the actual modulator circuit that supplies the 60 kV target voltage potential for the ion acceleration, at the ion source of the On-Line Isotope Mass Separator ISOLDE, located at the Proton-Synchrotron Booster PSB of the European Organisation for Nuclear Research CERN, the stability of which is critical for the mass resolution of the downstream separator. The proposed circuit uses two solid state switches, based on the Marx generator concept, to reduce the stress on the semiconductors, operating as a serial and parallel switch in order to fulfil the requirements of the target. The preliminary results of a 10 kV laboratory testing, using 1200 V IGBTs and capacitors in the two, ten stages, solid-state Marx generators are reported and discussed. (4 pages)

5 citations

01 Jan 1985
TL;DR: In this article, the DEMON II Marx generator has been developed to achieve low erection time jitter and reliability in a multistage, bipolar Marx generator, while maintaining exceptionally low pre-fire rates.
Abstract: Multimodule pulsed power accelerators typically require high module reliability and nanosecond regime simultaneity between modules Energy storage using bipolar Marx generators can meet these requirements Experience gained from computer simulations and the development of the DEMON II Marx generator has led to a fundamental understanding of the operation of these multistage devices As a result of this research, significant improvements in erection time jitter and reliability have been realized in multistage, bipolar Marx generators Erection time jitter has been measured as low as 25 nanoseconds for the 32 MV, 16-stage PBFA I Marx and 35 nanoseconds for the 60 MV, 30-stage PBFA II (DEMON II) Marx, while maintaining exceptionally low prefire rates Performance data are presented from the DEMON II Marx research program, as well as discussions on the use of computer simulations in designing low-jitter Marx generators

5 citations

Proceedings ArticleDOI
17 Jun 2007
TL;DR: In this paper, the ground connection at the center of the generator keeps the potential at the supply clamps low, but this measure has an influence on the coupling of the two sides of generator during the switching process and might require an additional capacitive coupling path.
Abstract: Summary form only given. For the industrial electroporation of plant cells it is of advantage to set up the electroporation reactor in a bipolar configuration. With the electrodes pulsed simultaneously with the same voltage of opposite polarity, in order to achieve the same electric field strength, less effort for the insulation to ground is necessary than for an unipolar reactor. The required voltage can be delivered by a bipolar Marx generator. For a reliable operation of such a configuration, the way the generator and the load are grounded is essential. To prevent the power supply from an over-voltage in the case of an undesired Hash-over inside the electroporation reactor, a good ground connection at the center of the generator keeps the potential at the supply clamps low. But this measure has an influence on the coupling of the two sides of the generator during the switching process and might require an additional capacitive coupling path. A transient insulation to ground by means of a coil fosters a better switching behavior, but in the case of a flash-over the generator potential may float resulting in an over-voltage. Here, an additional over-voltage protection for the power-supply is required. In the work the different approaches for the ground connection are discussed.

5 citations

31 May 1981
TL;DR: In this article, an electron beam machine consisting of six modules was constructed for the 'B' amplifier of the RAPIER KrF laser system, each module consists of a diode, a 5..cap omega.. positive charged water dielectric Blumlein pulse-forming line, and a five stage Marx generator.
Abstract: An electron beam machine consisting of six modules is being constructed for the 'B' amplifier of the RAPIER KrF laser system. Each module consists of a diode, a 5 ..cap omega.. positive charged water dielectric Blumlein pulse-forming line, and a five stage Marx generator. Separate 25 cm x 41 cm electron beams are formed in magnetically isolated diodes which when arranged in groups of three produce two nearly continuous 25 cm x 125 cm beams that enter the laser cell from opposite sides. The pulse-forming lines operate at 450 keV and produce 150 ns long pulses. The lines employ electrically triggered annular SF/sub 6/ output switches. The two concentric transmission lines of each pulse-forming line are charged in 1 ..mu..s through symmetric circuits to reduce diode prepulse voltage. The six modules together with the laser cell will occupy less than 15 m/sup 2/ of floor space.

5 citations


Network Information
Related Topics (5)
Voltage
296.3K papers, 1.7M citations
78% related
Cathode
112K papers, 1.5M citations
75% related
Capacitor
166.6K papers, 1.4M citations
74% related
Pulse-width modulation
64.3K papers, 657K citations
73% related
Diode
71.5K papers, 812.4K citations
73% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202255
202132
202033
201951
201845