Linear transformer driver with a 750-kA current and A 400-ns current risetime

Kim, A. A.; Kovalchuk, B. M.; Kumpyak, E. V.; Tsoy, N. V.

doi:10.1007/bf02512407

Cited by 9 publications

(3 citation statements)

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“…Linear transformer driver (LTD) technology is actively developed since 1997 at the Institute of High Current Electronics in Tomsk, Russia (Kim et al, 1999;Bastrikov et al, 2003;Kovalchuk et al, 2009a). The LTD driver is an induction generator similar to the linear induction accelerator (LIA), the inductive voltage adder (IVA), and the linear pulsed transformer (LPT).…”

Section: Introductionmentioning

confidence: 99%

Electron-beam accelerator for pumping of a Xe₂ lamp

et al. 2012

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A high-current electron-beam accelerator for pumping of a Xe 2 lamp was developed. It is intended for injection of an electron beam into cylindrical gas cavity (diameter of 400 mm, length of 1600 mm, and the absolute pressure up to 3 bars). Two electron diodes in parallel are used in the accelerator. Each diode is connected to a linear transformer driver with vacuum insulation of a secondary turn. The next parameters of the accelerator have been obtained: diode voltage -550-600 kV, diode current -276-230 kA, current rise time -160 ns, maximum power of the electron beam -130 GW, pulse width on half maximum -160 ns, electron beam energy at power level not less than half of maximum value -20 kJ. The total energy of electrons, which pass through a 40 μm Ti foil into the Xe cell, is 8-9 kJ in the 150-160 ns pulse (full width at half maximum) mean specific power of energy input into gas cavity is about 330 kW/cm 3 . Design of the accelerator and test results are presented and discussed in this paper.

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Section: Introductionmentioning

confidence: 99%

Electron-beam accelerator for pumping of a Xe₂ lamp

et al. 2012

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“…Linear transformer drivers (LTDs) are a rapidly developing area of pulsed-power technology capable of delivering high-power, high-current, 100-300 ns output pulses in a compact configuration [1][2][3][4][5][6]. The LTD platform is a type of induction accelerator that utilizes close packing of primary energy storage and switching to achieve a shortduration, high-peak-power pulse.…”

Section: Introductionmentioning

confidence: 99%

Efficient ferromagnetic core impedance model with application to finite-difference time-domain simulation

Genoni

Rose

Clark

et al. 2012

Phys. Rev. ST Accel. Beams

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A frequency-dependent impedance model for laminated ferromagnetic cores is presented and analyzed. The model assumes a multiple-winding ferromagnetic induction core composed of multiple thin layers with linear material response. This model builds on the analysis presented by Rose et al. [Phys. Rev. ST Accel. Beams 13, 090401 (2010)], that determined an equivalent time-dependent resistance that was used to successfully model the loss currents in a linear transformer device cavity containing ferromagnetic cores. The new core impedance model is more general and has been implemented as a surface-impedance boundary condition [K. S. Oh and J. E. Schutt-Aine, IEEE Trans. Antennas Propag. 43, 660 (1995)] which is suitable for use in multidimensional finite-difference time-domain codes.

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“…Linear transformer drivers (LTDs) are a rapidly developing area of pulsed-power technology that are capable of delivering high-power, high-current, 100-300 ns output pulses in a compact configuration [1][2][3][4][5][6]. The LTD platform is a type of induction accelerator that utilizes close packing of primary energy storage and switching to achieve a shortduration, high-peak-power pulse.…”

Section: Introductionmentioning

confidence: 99%

Circuit models and three-dimensional electromagnetic simulations of a 1-MA linear transformer driver stage

Rose

Miller

Welch

et al. 2010

Phys. Rev. ST Accel. Beams

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A 3D fully electromagnetic (EM) model of the principal pulsed-power components of a high-current linear transformer driver (LTD) has been developed. LTD systems are a relatively new modular and compact pulsed-power technology based on high-energy density capacitors and low-inductance switches located within a linear-induction cavity. We model 1-MA, 100-kV, 100-ns rise-time LTD cavities [A. A. Kim et al., Phys. Rev. ST Accel. Beams 12, 050402 (2009)] which can be used to drive z-pinch and material dynamics experiments. The model simulates the generation and propagation of electromagnetic power from individual capacitors and triggered gas switches to a radially symmetric output line. Multiple cavities, combined to provide voltage addition, drive a water-filled coaxial transmission line. A 3D fully EM model of a single 1-MA 100-kV LTD cavity driving a simple resistive load is presented and compared to electrical measurements. A new model of the current loss through the ferromagnetic cores is developed for use both in circuit representations of an LTD cavity and in the 3D EM simulations. Good agreement between the measured core current, a simple circuit model, and the 3D simulation model is obtained. A 3D EM model of an idealized ten-cavity LTD accelerator is also developed. The model results demonstrate efficient voltage addition when driving a matched impedance load, in good agreement with an idealized circuit model.

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Linear transformer driver with a 750-kA current and A 400-ns current risetime

Cited by 9 publications

References 0 publications

Electron-beam accelerator for pumping of a Xe₂ lamp

Electron-beam accelerator for pumping of a Xe₂ lamp

Efficient ferromagnetic core impedance model with application to finite-difference time-domain simulation

Circuit models and three-dimensional electromagnetic simulations of a 1-MA linear transformer driver stage

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Linear transformer driver with a 750-kA current and A 400-ns current risetime

Cited by 9 publications

References 0 publications

Electron-beam accelerator for pumping of a Xe2 lamp

Electron-beam accelerator for pumping of a Xe2 lamp

Efficient ferromagnetic core impedance model with application to finite-difference time-domain simulation

Circuit models and three-dimensional electromagnetic simulations of a 1-MA linear transformer driver stage

Contact Info

Product

Resources

About

Electron-beam accelerator for pumping of a Xe₂ lamp

Electron-beam accelerator for pumping of a Xe₂ lamp