Showing papers on "Marx generator published in 1984"
TL;DR: When impulse voltages of very short time to half-value are generated with a standard Marx circuit, there may be a considerable decrease in efficiency as mentioned in this paper, which is not the case here.
Abstract: When impulse voltages of very short time to half-value are generated with a standard Marx circuit, there may be a considerable decrease in efficiency.
13 citations
TL;DR: In this paper, a simple and compact KrF laser with electron beam excitation is described, driven directly by a ten-stage coaxial Marx generator with a flat MgF2 outcoupler and a suprasil roof prism.
7 citations
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
01 Jan 1984
TL;DR: The 1000 MVA superconducting power transmission cable test facility at Brookhaven National Laboratory is the world's highest power demonstration of the application of superconductivity to electric utility engineering as discussed by the authors.
Abstract: The 1000 MVA Superconducting Power Transmission Cable Test Facility at Brookhaven National Laboratory is the world’s highest power demonstration of the application of superconductivity to electric utility engineering. The major purpose of the facility is to evaluate and demonstrate the performance of flexible cables, the cable enclosure and cable terminations under realistic simultaneous voltage and current excitation corresponding to a 138 kV system with a three-phase rating of 1000 MVA. In addition, massive supporting equipment is required at the site in order to cool and excite the cables. This equipment includes:
1)
A 700 W supercritical helium refrigerator.
2)
A 100 W refrigerator for lead cooling (CTI model 1430).
3)
60 Hz excitation supplies with maximum ratings up to 6000 A and 240 kV to ground.
4)
1000 kV Marx generator for impulse and surge voltage tests.
5)
An extensive and ever-expanding computer system for data collection and logging and system control.
6)
Several overlays of vacuum pumping and piping, pneumatic pumps and controls and large oil and water circulating and cooling systems.
3 citations
TL;DR: In this paper, a theoretical solution for the electric field and charge density of a capacitor with a charge injecting electrode being charged by a Marx capacitor bank is given, where a charge injector electrode is replaced with a Marx capacitance bank.
Abstract: A theoretical solution is given for the electric field and charge density of a capacitor with a charge injecting electrode being charged by a Marx capacitor bank.
1 citations
01 Jan 1984
TL;DR: In this article, a study of common configurations of the Marx generator, comparing them and selecting the most suitable for the purpose, is presented, with suggestions on the method to be followed to determineparameters and indicate practical criteria which facilitategeneration of waveshapesof thistype.
Abstract: When impulsevoltagesof very short time to half-valueare generatedwith a standardMarx circuit,theremay be a considerabledecreasein effi- ciency. In order to keep this decreasewithinacceptable values,the authorshaveapproachedthe problemwithan in-depthstudyof themost common configurations of the Marx generator, comparingthem and selectingthe most suitablefor the purpose. The authorsgive suggestionson the methodto be followedto determineparameters and indicatepractical criteriawhich facilitategenerationof waveshapesof thistype.