Search Results - "Vomvoridis, J L"

Experimental Results of the EU ITER Prototype Gyrotrons by Gantenbein, G., Albajar, F., Alberti, S., Avramidis, K., Bin, W., Bonicelli, T., Bruschi, A., Chelis, J., Fanale, F., Legrand, F., Hermann, V., Hogge, J.-P., Illy, S., Ioannidis, Z. C., Jin, J., Jelonnek, J., Kasparek, W., Latsas, G. P., Lechte, C., Lontano, M., Pagonakis, I. G., Rzesnicki, T., Schlatter, C., Schmid, M., Tigelis, I. G., Thumm, M., Tran, M. Q., Vomvoridis, J. L., Zein, A., Zisis, A.

“…The European 1 MW, 170 GHz CW industrial prototype gyrotron for ECRH&CD on ITER was under test at the KIT test facility during 2016. In order to optimize the…”
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EURIDICE: A code-package for gyrotron interaction simulations and cavity design by Avramides, K. A., Pagonakis, I. Gr, Iatrou, C. T., Vomvoridis, J. L.

“…We report, for the first time comprehensively, on the present status of the code-package EURIDICE for gyrotron interaction simulations and cavity design,…”
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Experimental verification of the European 1 MW, 170 GHz industrial CW prototype gyrotron for ITER by Rzesnicki, T., Albajar, F., Alberti, S., Avramidis, K.A., Bin, W., Bonicelli, T., Braunmueller, F., Bruschi, A., Chelis, J., Frigot, P.-E., Gantenbein, G., Hermann, V., Hogge, J.-P., Illy, S., Ioannidis, Z.C., Jin, J., Jelonnek, J., Kasparek, W., Latsas, G.P., Lechte, C., Lontano, M., Kobarg, T., Pagonakis, I.G., Rozier, Y., Schlatter, C., Schmid, M., Tigelis, I.G., Thumm, M., Tran, M.Q., Vomvoridis, J.L., Zisis, A.

“…The EU 1 MW, 170 GHz gyrotron with hollow cylindrical cavity have been designed within the European GYrotron Consortium (EGYC) in collaboration with the…”
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Density and energy modulations of a gyrotron electron beam in a periodically corrugated beam channel by LAZAROS, A., VOMVORIDIS, J. L.

“…The equilibrium distribution of an electron beam, under the action of its self and image fields is studied in a periodically corrugated beam channel with…”
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Relativistic theory of frequency blue-shift of an intense ionizing laser beam in a plasma by Hizanidis, K., Vomvoridis, J.L., Mendonca, J.T., Frantzeskakis, D.J.

“…Frequency up-conversion of a laser beam causing gas ionization in a cavity is considered in a fully relativistic fashion. A simple ionization model, based on…”
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Design considerations for powerful continuous-wave second-Cyclotron-harmonic coaxial-cavity gyrotrons by Avramides, K.A., Iatrou, C.T., Vomvoridis, J.L.

“…The mode-selection ability of coaxial gyrotron cavities with a longitudinally corrugated inner conductor is systematically examined, as regards powerful,…”
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Evolution of an electron beam with azimuthal density nonuniformity in a cylindrical beam tunnel by Pagonakis, J.Gr, Vomvoridis, J.L.

“…We present the results on the deformation of the cross section of an electron beam in a cylindrical beam tunnel with /spl part///spl part/z=0 and homogeneous…”
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A slow-wave autonomous cyclotron buncher: Exact Hamiltonian analysis and simplified helical model by Frantzeskakis, D J, Hizanidis, K, Vomvoridis, J L

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High-frequency electromagnetic modes in a dielectric-ring loaded beam tunnel by Tigelis, I.G., Vomvoridis, J.L., Tzima, S.

“…A numerical code (PERIODIC-HYBRID) is developed for the calculation of the dispersion relation, the electromagnetic field components, and the quality factor of…”
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Calculation of eigenmodes in a nonperiodic corrugated waveguide by Tigelis, I.G., Pedrozzi, M., Cottis, P.G., Vomvoridis, J.L.

“…A theoretical technique for determining the dispersion relation, the electromagnetic field components, and the quality factor of a dielectric-loaded…”
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A New Concept for the Collection of an Electron Beam Configured by an Externally Applied Axial Magnetic Field by Pagonakis, I.G., Hogge, J.-P., Alberti, S., Avramides, K.A., Vomvoridis, J.L.

“…A new concept for the collection of an electron beam, which is configured by an externally applied axial magnetic field, is presented. The two major advantages…”
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Parametric study on the effect of the dielectric and geometry properties on the parasitics in gyrotron beam tunnels by Latsas, G P, Tigelis, I G, Moraitou, M D, Kern, S, Vomvoridis, J L, Ioannidis, Z C

“…Using the numerical code Fishbone, developed to study the parasitic oscillations in gyrotron beam tunnels, a parametric study is performed on the effect of the…”
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Post-Amplification of a Gyrotron RF Beam by a Sheet Electron Beam by Anastassiou, Giorgos, Vomvoridis, John L

“…The availability of high-power microwave sources like gyrotrons makes it now possible to use the Gaussian output RF beam of a conventional gyrotron propagating…”
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Small-signal analysis of the cyclotron resonance maser in a system with axial nonuniformities by Vomvoridis, J.L., Tigelis, I.G.

“…The small-signal cyclotron resonance maser (CRM) interaction in a system with axial gradients is treated analytically in order to investigate the possibility…”
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The self-consistent 3D trajectory electrostatic code ARIADNE for gyrotron beam tunnel simulation by Pagonakis, J.G., Vomvoridis, J.L.

“…We present a new parallel code for gyrotron beam tunnel simulation. It is a three dimensional, electrostatic, self-consistent and trajectory code. For a…”
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BeamaWave Interaction in Corrugated Structures in the Small-Signal Regime by Latsas, G P, Vomvoridis, J L, Avramides, KA, Tigelis, I G

“…A method based on an eigenfunction expansion and the linearized Vlasov equation to study the beam-wave interaction in cylindrical surface corrugated waveguides…”
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Electromagnetic modelling of dielectric loaded aperiodic gyrotron beam tunnels by Chelis, J.G., Vomvoridis, J.L.

“…We present a new modelling approach for the dielectric loaded gyrotron beam tunnel. We treat the problem realistically as a finite sized structure by…”
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A Classical Electron-Cyclotron Maser with Axial Electron Beam Injection by Vomvoridis, J. L.

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A classical electron cyclotron quasioptical maser by Sprangle, P., Vomvoridis, J. L., Manheimer, W. M.

“…In this work a new classical electron cyclotron maser oscillator is proposed and analyzed. The configuration utilizes an open-resonator cavity containing a…”
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Beam-Wave Interaction in Corrugated Structures in the Small-Signal Regime by Latsas, G.P., Vomvoridis, J.L., Avramides, K.A., Tigelis, I.G.

“…A method based on an eigenfunction expansion and the linearized Vlasov equation to study the beam-wave interaction in cylindrical surface corrugated waveguides…”
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