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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01 Jan 1988
TL;DR: In this article, the authors used conducting grooves in the insulators to shield triple points and reduce the maximum surface stress by using conducting groove in the polygonal insulators.
Abstract: Insulators are being designed and tested at Livermore to minimize size and weight. Modeling has taken into account charge accumulation due to electron emission. Insulators with a 45/degree/ cone angle have been tested with both polarities of applied voltage across the insulator. Techniques have been developed to shield triple points and reduce the maximum surface stress by using conducting grooves in the insulators. Tests have been conducted with a 1.2 megavolt, 1 microsecond Marx generator and a 3 nanosecond, 400 kV pulse generator. 3 refs.
3 citations
TL;DR: In this article, a planar and annular graphite cathodes of various diameters at a fixed 25mm anode-cathode gap were used for electron beam generation.
Abstract: Intense gigawatt relativistic electron beam generation studies were carried out in the presence of prepulse. Electron beams were generated using planar and annular graphite cathodes of various diameters at a fixed 25mm anode-cathode gap. For the planar cathode, the beam parameters obtained are 340keV, 24kA, and 100ns at a 680A∕cm2 current density. With an annular cathode, 346keV, 10kA, and 100ns electron beam could be generated at a 3.4kA∕cm2 current density. The peak electric field in the diode varies from 58to138kV∕cm. A bipolar prepulse voltage has been recorded at the diode for both the cathodes. The amplitude of the negative prepulse voltage varies with the Marx generator voltage but the time duration remains same. The positive prepulse voltage varies both in amplitude and time duration with the Marx generator voltage. Some shot to shot variation in the diode voltage and current were recorded for the annular cathode due to the nonreproducibility of the prepulse generated plasma. It was found that the...
3 citations
01 Jun 2014
TL;DR: In this article, a high power, long pulse modulator aimed at application to international linear collider (ILC) is developed, with consideration on compactness, reliability, and cost reduction.
Abstract: A high power, long pulse modulator aimed at application to international linear collider (ILC) is being developed. The target parameters are: 120 kV (±0.5%), 140 A, 1.7 ms, and 5 pps, with consideration on compactness, reliability, and cost reduction. A solid state, chopper controlled pulsed power generator using Marx-topology has been proposed. This paper shows the experimental results of the prototype.
3 citations
24 Jul 2012
TL;DR: In this paper, a high pressure spark gap switch is used to generate high power microwaves using a high voltage Marx generator along with a high-pressure spark gap switching, which is a key component in systems that generate high voltage microwaves.
Abstract: High voltage Marx generator along with a high pressure spark gap switch is a key component in systems that generate high power microwaves. This paper presents modelling and analysis of high pressure spark gap switch. In this paper, the three-dimensional static and dynamic electromagnetic spark gap model is simulated using computer simulation technology (CST) electromagnetic studio and microwave studio. The resistance and inductance model of the switch is developed and analysed to study the peak voltage of the output pulse generated by the switch for gases under different pressure.
3 citations
24 Jul 2014
TL;DR: In this paper, the design and simulation of 30 kV solid state DC source to Marx generator is presented, which makes use of zero current switching - series resonant (ZCS-SR) full - bridge topology with high frequency transformer and six stage voltage multiplier circuit.
Abstract: Marx generator is an impulse source used for testing of various equipments. High voltage DC source is input to Marx generator. Traditionally, DC sources used for Marx generator were of large size but now due to advancement in solid state devices it is possible to reduce size and weight of DC source. This paper explains the designing and simulation of 30 kV solid state DC source to Marx generator. It makes use of zero current switching - series resonant (ZCS-SR) full - bridge topology with high frequency transformer and six stage voltage multiplier circuit. For switching purpose MOSFET is used. Effect of resistive and capacitive load on output voltage is analyzed.
3 citations