IDERIX : An 8 MV flash x-rays machine using a LTD design

Toury, M.; Vermare, C.; Etchessahar, B.; Верон, Лаурент; Mouillet, M.; Bayol, F.; Avrillaud, G.; Kim, A. A.

doi:10.1109/ppps.2007.4651913

Cited by 14 publications

(7 citation statements)

References 4 publications

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“…Similar to the description by TOURY [16] , the circuit model of one cavity is established in PSPICE, as shown LIU Peng et al: Numerical Analysis of the Output-Pulse Shaping Capability of LT Drivers in Fig. 1.…”

Section: Design Of the Whole Circuit Model Of Ltdmentioning

confidence: 99%

“…Codes such as BERTHA and SCREAMER, based on transmission line models, were validated to predict the performance of LTD [1,2,12∼15] . An 8 MV LTD for radiography was designed and simulated by using the PSPICE code with the transmission line model for each cavity [16] . However, the output parameters of an LTD are likely to be affected significantly by the cavity-triggering sequence.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

Liu

Sun

Yin

et al. 2011

Plasma Sci. Technol.

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Output-pulse shaping capability of a linear transformer driver (LTD) module under different conditions is studied, by conducting the whole circuit model simulation by using the PSPICE code. Results indicate that a higher impedance profile of the internal transmission line would lead to a wider adjustment range for the output current rise time and a narrower adjustment range for the current peak. The number of cavities in series has a positive effect on the outputpulse shaping capability of LTD. Such an improvement in the output-pulse shaping capability can primarily be ascribed to the increment in the axial electric length of LTD. For a triggering time interval longer than the time taken by a pulse to propagate through the length of one cavity, the output parameters of LTD could be improved significantly. The present insulating capability of gas switches and other elements in the LTD cavities may only tolerate a slightly longer deviation in the triggering time interval. It is feasible for the LTD module to reduce the output current rise time, though it is not useful to improve the peak power effectively.

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Section: Design Of the Whole Circuit Model Of Ltdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

Liu

Sun

Yin

et al. 2011

Plasma Sci. Technol.

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“…The 1 MV LTD driver was initially built at "Commissariat à l'Energie Atomique" (CEA) as a first module of an 8 MV=48 Ω flash radiography machine [6]. It was successfully tested and was capable of delivering a 1 MV output electrical pulse on a 6 Ω electron beam diode with a full width at half maximum of 75 ns [7].…”

Section: Introductionmentioning

confidence: 99%

Investigating the performances of a 1 MV high pulsed power linear transformer driver: from beam dynamics to x radiation

Maisonny

Ribière

Toury

et al. 2016

Phys. Rev. Accel. Beams

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International audienceThe performance of a 1 MV pulsed high-power linear transformer driver accelerator were extensively investigated based on a numerical approach which utilizes both electromagnetic and Monte Carlo simulations. Particle-in-cell calculations were employed to examine the beam dynamics throughout the magnetically insulated transmission line which governs the coupling between the generator and the electron diode. Based on the information provided by the study of the beam dynamics, and using Monte Carlo methods, the main properties of the resulting x radiation were predicted. Good agreement was found between these simulations and experimental results. This work provides a detailed understanding of mechanisms affecting the performances of this type of high current, high-voltage pulsed accelerator, which are very promising for a growing number of applications

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“…Linear transformer drivers (LTD) are a promising pulse power source in many applications such as X-ray radiography, high current Z-pinch, isentropic compression, and Z-pinch inertial fusion energy (IFE) [1][2][3][4][5][6][7][8][9][10]. LTD could produce high power pulses with risetime of 60 ns to 100 ns without any pulse compression stages.…”

Section: Introductionmentioning

confidence: 99%

Trigger method based on internal bricks within cavities for Linear Transformer Drivers

Sun

Zeng

Liang

et al. 2015

2015 IEEE Pulsed Power Conference (PPC)

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A novel trigger method based on an internal brick and azimuthal line in cavities is presented for Linear Transformer Drivers (LTD). The triggered brick is similar as the other normal bricks in cavities, which has the same charge voltage and the switch gas pressure. When the switch in triggered brick is closed by an external pulse, a high voltage pulse is produced and transmitted to other bricks along an azimuthal line installed in the middle insulator of cavities. Therefore, one external trigger pulse is enough for a 1 MA LTD cavity. This novel trigger manner has been applied successfully in 800 kA cavity with 36 bricks. Based on this novel trigger manner, a trigger method is proposed for a LTD module with multi-stage cavities stacked in series. Only several upstream cavities are triggered by external trigger pulses, and the residual cavities are triggered by the high pulses produced from the particular-location of upstream cavities. This trigger method will greatly simplify the requirements of trigger system, which has a promising application for future 60-MA LTD accelerator.

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IDERIX : An 8 MV flash x-rays machine using a LTD design

Cited by 14 publications

References 4 publications

Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

Numerical Analysis of the Output-Pulse Shaping Capability of Linear Transformer Drivers

Investigating the performances of a 1 MV high pulsed power linear transformer driver: from beam dynamics to x radiation

Trigger method based on internal bricks within cavities for Linear Transformer Drivers

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