Classical axial VIRCATORS have low power conversion efficiency, typically less than 1% depending on the different designs proposed in the literature. The goal of this webinar is to propose new VIRCATOR structures with reflectors embedded in the output circular waveguide in order to increase the output power. For instance, to design such structures for up to 2 reflectors, the dispersion diagram is plotted and analyzed to predict the potential operating modes. In order to predict a robust design for an experimental setup, the environment influence, such as the vacuum quality is discussed in terms of losses which can affect the operating frequencies and thus the output power. First steps for an optimized virtual prototype will be proposed in this context.
Dr. Stephanie Champeaux received the M.S. degree in mechanics from the University Paul Sabatier, Toulouse, France, in 1994, and the Ph.D. degree in engineering sciences from the University of Nice Sophia Antipolis, Nice, France, in 1998. She held a post-doctoral position with the University of California at San Diego, CA, USA, from 1999 to 2001, where she was involved in turbulent transport modeling in tokamak plasmas. Dr. Champeaux moved to CEA-DAM, DIF, Arpajon, France, in 2002. Recently, her research interests include ion cyclotron resonant frequency antennas coupling with ferroelectric media, vircator sources of high-power microwaves, mitigation of electromagnetic pulses in laser chamber, and numerical development of optoelectronic tubes of streak cameras within the framework of the Laser Mega Joule project in France.
Dr. Richard Cousin received the M. S. degree in fundamental physics from the University of Paris XI, Orsay, France, in 1999, and the Ph.D. degree in electron devices from Ecole Polytechnique, Palaiseau, France, in 2005. His dissertation was on the development of an S-band compact magnetically insulated line oscillator (MILO). Dr. Cousin was with the French-German Research Institute of Saint-Louis (ISL), Saint-Louis, France, with an experience on electromagnetic launchers. After a post-doctoral position dedicated to experiments on a compact MILO together with CEA, Laboratoire de Physique des Plasmas, Ecole Polytechnique, and ISL, he joined Computer Simulation Technology AG, Darmstadt, Germany, as an Application Engineer, where he is currently one of the experts dedicated to the charged particle dynamics market development.
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