Repetitively pulsed high-current accelerators with transformer 
charging of forming lines

Mesyats, G.; Korovin, S. D.; Gunin, A. V.; Gubanov, V. P.; Степченко, А. С.; Grishin, Dmitry M.; Landl, V.F.; Алексеенко, П. И.

doi:10.1017/s0263034603212076

Cited by 108 publications

(26 citation statements)

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“…4. The oil-filled pulse-forming line 1 actually represents the transmitting line L T for the high-voltage nanosecond generator "Sinus" [18], [19]. The gas-filled line 2 is the continuation of line 1.…”

Section: Experimental Arrangement and Obtained Datamentioning

confidence: 99%

High-Voltage Spark Gap in a Regime of Subnanosecond Switching

Korolev

Bykov

2012

IEEE Trans. Plasma Sci.

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This paper describes an investigation of a highvoltage spark gap in the conditions of subnanosecond switching. The high-voltage pulsed generator "Sinus" is used to charge a coaxial line loaded to a high-pressure spark gap. Typical charging time for the coaxial line is in a range from 1 to 2 ns, maximum charging voltage is up to 250 kV, and a range of pressures for the gap is from 2 to 9 MPa. The theoretical models of the switching process on subnanosecond time scale are examined. A general equation for temporal behavior of the gap voltage, which is applicable for the avalanche model and the Rompe-Weitzel model has been obtained. It is revealed that the approach based on the avalanche model offers a possibility to describe the switching process only at extremely high overvoltages. The Rompe-Weitzel model demonstrates a good agreement with the experimental data both for the conditions of static breakdown and for the regime of a high overvolted gap. Comparison of experimental and calculated voltage waveforms has made it possible to estimate an empirical constant in the Rompe-Weitzel model (the price of ionization). This constant is varied from 420 to 920 eV, depending on the initial electric field in the gap.Index Terms-High-pressure spark discharge, subnanosecond discharge, subnanosecond high-voltage generators.

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Section: Experimental Arrangement and Obtained Datamentioning

confidence: 99%

High-Voltage Spark Gap in a Regime of Subnanosecond Switching

Korolev

Bykov

2012

IEEE Trans. Plasma Sci.

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“…11 is simply W CHARGE = W PFL + W T . Combining (2) and (3) and solving for the capacitance of the cable gives…”

Section: B Efficiencymentioning

confidence: 99%

An Inductive 700-MW High-Voltage Pulse Generator

Lindblom

Bernhoff

Isberg

et al. 2006

IEEE Trans. Plasma Sci.

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A repetitive inductive 700-MW high-voltage pulse generator that delivers a 150-ns square pulse with 20-ns rise time at 150 kV has been constructed. The pulse generator has a 1:10 air core transformer connected to a 25-Ω pulse forming line (PFL). The transformer and the PFL are both constructed using highvoltage cables. The closing switch of the PFL is a spark gap that is in a water tank together with the cable endings of the PFL and transformer. The electric field at the cable endings is refractively graded by the high permittivity of the surrounding water. The PFL is charged in 2.5 µs to 170 kV, and the electric field in the closing switch of the PFL reaches 33 kV/mm until the threshold voltage is exceeded. The efficiency of the pulse generator is 40%. The authors believe that this concept can be up-scaled to a 25-GW generator operating at 500 kV. An electric circuit simulation of a 25-GW pulse generator and an electrostatic simulation for a refractive cable ending are presented.Index Terms-High-voltage cable, inductive pulse generator, refractive field grading, resistive layer.

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“…But high coupling coefficient and long lifetime, which are important parameters of pulse transformer, are difficult to obtain (Ko & Nam, 2004. However, magnetic core transformer, which is widely used in the field of high power pulse power, has high coupling coefficient and high energy conversion efficiency (Mesyats et al, 2003;Su et al, 2009). IEBA based on Tesla transformer has been used in many fields, such as high power microwave driven (Miller et al, 1975;Weber et al, 1993;Tarasenko et al, 2005), X-ray radiography (Weber et al, 2008), and radiation effects testing (Weber et al, 2004) and so on.…”

Section: Introdutionmentioning

confidence: 99%

Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

Liu¹,

Zhang²,

Yang³

et al. 2012

Laser Part. Beams

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An intense electron-beam accelerator, which consists of a primary storage capacitor system, a magnetic core Tesla transformer, Blumlein pulse forming line of water dielectric, and a field-emission diode, are constructed and described. The experimental results show that the output voltage of transformer is more than 740 kV, the rise time is about 5 μs, the diode voltage is about 596 kV, electron beam current is about 60 kA, the duration is about 100 ns, and the power is 36 GW when charging voltage is 40 kV. It was suitable to drive magnetically insulated transmission line oscillator. And it can be also used in materials surface modification. This accelerator is very compact and works stably and reliably.

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Repetitively pulsed high-current accelerators with transformer charging of forming lines

Cited by 108 publications

References 0 publications

High-Voltage Spark Gap in a Regime of Subnanosecond Switching

High-Voltage Spark Gap in a Regime of Subnanosecond Switching

An Inductive 700-MW High-Voltage Pulse Generator

Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

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