Baptiste Cadilhon

Research Field

Reflection limitation in multi-pulse radiography applications by means of dispersive coaxial lines

Charly Sigogne Antoine Silvestre de Ferron Laurent Pécastaing L. Courtois Baptiste Cadilhon

Reflection

Coaxial

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Investigations on a double pulses generator for radiographic applications

2013 Abstracts IEEE International Conference on Plasma Science (ICOPS) (2013)

B. Cassany Baptiste Cadilhon P. Modin Romain Pecquois

During the two last decades, several countries have carried out works to upgrade radiographic electron generators used for hydrodynamics experiments. These studies require small X-ray spot sizes (~ 2mm), associated with very high dose rates (~ 5.10 ⁹ rad/s). These goals have been successfully obtained on several facilities like AIRIX ¹ , DARHT ² , RITS 6 ³ and Dragon I ⁴ .

10.1109/plasma.2013.6635191

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Flash lamps current monitoring using optically insulated FPGA technology under harsh pulsed power environement

HAL (Le Centre pour la Communication Scientifique Directe) (2019)

Jean-Marie Larbaig Robert Ruscassie Baptiste Cadilhon Jean-Marc Diénot Anca Petre

Pulsed Power

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M12: a 700keV-2.5kA dual pulse electron beam injector

2020 IEEE International Conference on Plasma Science (ICOPS) (2018)

Baptiste Cadilhon L. Courtois P. Modin E. Pasini C. Vermare

M12 is an Inductive Voltage Adder (IVA) generator developed at CESTA as a test bed induction injector, in the framework of future electron accelerators for radiography. M12 consists in a dual pulse high-power generator which feeds the four induction cells (ferrite) of the IVA. A 60ns flat top pulse will be applied across the foilless diode gap in order to produce twice, a 2.5 kA electron pulse, from a velvet cathode. The delay between the two pulses can be adjusted from 0.3 up to $2\mu \mathrm{s}$ ., The physics involved in dual emission, regarding voltage, current stability, as well as cathode behavior, are being investigated [1].

Marx Generator

Pulsed Power

10.1109/icops35962.2018.9576032

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Design of a high voltage circuit to generate a square wave signal with over lapping reflections

Eric Brune Charly Sigogne Laurent Pécastaing Antoine Silvestre de Ferron T. Huiskamp

Lapping

Square wave

Square (algebra)

SIGNAL (programming language)

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An electromagnetic simulation of semi conductive coaxial lines for multi-pulses radiography applications

HAL (Le Centre pour la Communication Scientifique Directe) (2022)

Charly Sigogne Jean-Marie Larbaig Antoine Silvestre de Ferron Laurent Pécastaing L. Courtois

Coaxial

Electromagnetic pulse

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Development of a Fast Marx Generator for High Power Ultra Wideband Pulse Radiation

Acta Physica Polonica A (2009)

Baptiste Cadilhon Laurent Pecastaing Thierry Reess Antoine Silvestre de Ferron P. Pignolet

We present in this paper the design and realisation of two autonomous, ultra wideband radiation sources consisting of a high gain broadband antenna driven by two subnanosecond pulsed power sources.Each one is made of a Marx generator and a pulse forming device based on the use of gaseous spark gap.The main pulsed source is a ten stage subnanosecond Marx generator which delivers pulses in the range of 250 kV/1.5 J, with a 300 ps rise time, subnanosecond pulse duration at a pulse repetition frequency of 350 Hz.The antenna combined with the pulsed source is a travelling wave antenna called Valentine antenna.Some mechanical modifications were made to improve the dielectric strength of this radiation element.A 3D model of the antenna, on a time domain electromagnetic software, was first performed to study the influence of these modifications on the main radiating characteristics of the antenna.Its high gain and its capability to radiate short pulses without dispersion allow us to achieve a high measured figure of merit.

Marx Generator

Wideband

Pulsed Power

10.12693/aphyspola.115.1084

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Investigating the benefit of solid-state architectures to improve performances of pulsed power generator for multi-pulse flash radiography applications

HAL (Le Centre pour la Communication Scientifique Directe) (2021)

Jean-Marie Larbaig Laurent Pécastaing Thierry Reess Antoine Silvestre de Ferron Marc Rivaletto

Pulsed Power

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