Topic
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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TL;DR: In this article, a Marx-stackable insulated gate bipolar transistors-based modulator for plasma ion implantation and other pulsed high voltage high peak power applications is presented.
Abstract: In this paper, we present a Marx-stackable insulated-gate-bipolar-transistors-based modulator for plasma ion implantation and other pulsed high voltage-high peak power applications. Active control of charging and discharging cycles permits rigid pulse forms, arbitrary duty cycles and internal efficiencies exceeding 90%. We demonstrate a 20-kV 15-A generator using a 2-kV Marx generator to drive a pulse transformer
19 citations
13 Jun 2005
TL;DR: In this article, the authors designed and built a rapid capacitor charger for 10 Hz, 500 J/shot operation of a low-inductance, compact Marx generator using a hard-switched IGBT H-Bridge Inverter, which drives a 30 kHz, nano- crystalline step-up transformer.
Abstract: We designed and build a rapid capacitor charger for 10 Hz, 500 J/shot operation of a low-inductance, compact Marx generator. The charger uses a hard-switched IGBT H-Bridge Inverter, which drives a 30 kHz, nano- crystalline step-up transformer. The transformer, in addition to the high-voltage rectifier and a trigger- transformer are contained in a section which is filled with transformer oil. The main circuit board also contains a solid-state Marx generator to trigger the main Marx generator. We also implemented a self-powered HV-feedback sensor to stop the charge process precisely at the target voltage. This new sensor greatly enhanced the rep-rated performance of the Marx by preventing pre-fires, since it enabled us to charge aggressively without overshooting the target voltage and have more time for spark-gap recovery.
19 citations
17 Jun 2007
TL;DR: In this article, a hybrid fully integrated solid-state Marx generator circuit was developed for high-frequency (kHz), high-voltage (kV) applications needing rectangular pulses.
Abstract: This paper presents a hybrid fully integrated solid- state Marx generator circuit, which has been developed for high-frequency (kHz), high-voltage (kV) applications needing rectangular pulses. The proposed circuit takes advantage of the intensive use of power semiconductor switches to increase the performance of the classical Marx circuit, strongly reducing losses and increasing the pulse repetition frequency. In addition, to further increase the output pulse, the proposed topology is enhanced with an energy recovery reset circuit that enables the use of an output pulse transformer, and recovers the transformer magnetizing energy, during the pulse off state, back to the energy storage capacitors.
19 citations
01 Aug 2009
TL;DR: Sandia National Laboratories is investigating linear transformer driver (LTD) architecture as a potential replacement of conventional Marx generator based pulsed power systems as discussed by the authors, which has traditionally been utilized as the primary driver for z-pinch wire-array experiments, radiography, inertial fusion energy (IFE) concepts, and dynamic materials experiments (i.e. ICE).
Abstract: Sandia National Laboratories is investigating linear transformer driver (LTD) architecture as a potential replacement of conventional Marx generator based pulsed power systems. Such systems have traditionally been utilized as the primary driver for z-pinch wire-array experiments, radiography, inertial fusion energy (IFE) concepts, and dynamic materials experiments (i.e. ICE).
19 citations
TL;DR: OWL II as mentioned in this paper is a water-dielectric line-type pulse generator capable of producing ∠100nsec electron beams with total energies of as much as 150 kJ.
Abstract: OWL is a water‐dielectric line‐type pulse generator capable of producing ∠100‐nsec electron beams with total energies of as much as 150 kJ. In its present form, OWL II consists of an oil‐immersed, 1/3‐MJ Marx generator charging a 3.9‐Ω coaxial pulse‐forming line which is series switched into either a two‐ or three‐stage impedance transformer. The output impedance is 1.9 or 1.1 Ω, depending upon which transformer is used, and nominal beam outputs in the two cases are 1.3 MV at 0.8 MA and 0.9 MV at 1.2 MA, respectively. The pulse width can be selected at either 60 or 120 nsec (FWHM of power) by interchanging two available pulse lines. Shot‐to‐shot reproducibility in output of ±2% with a mean electron energy ∠1.0 MeV is obtained with the 1.9‐Ω final transformer. A triggered multichannel water switch minimizes the risetime of pulses injected into the transformer section.
18 citations