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4篇 您的检索式:作者名="S HEURAUX"
    题名 作者 年代 出处 被引量
1Numerical modelling of the coupling of an ICRH antenna with a plasma with self- consistent antenna currents 显示文摘Pecoul S Heuraux S Koch R 2002Computer Physics communications2002,146,2:1
2Numerical modeling of the coupling of an ICRH antenna with a plasma with self-consistent antenna currents 显示文摘Pecoul S Heuraux S Koch R 2002Computer Physics Communication2002,146,:1
3Investigation of nonlinear effects in Doppler reflectometry using full-wave synthetic diagnostics显示文摘In this work,Doppler reflectometry(DR)and radial correlation DR(RCDR)nonlinear scattering effects are studied using full-wave modeling with a set of representative FT-2 tokamak turbulence as inputs.Narrowing of the RCDR correlation function and widening of the DR poloidal wavenumber spectrum are demonstrated.An effect on the dependence of the DR signal frequency shift on the probing wavenumber is found,namely,this dependence‘linearizing’in the nonlinear scattering regime.Nonlinear effects are shown to be weaker for O-mode probing than for X-mode probing,while a faster transition to nonlinear regime is demonstrated for RCDR compared to DR in both probing scenarios.O L KRUTKIN A B ALTUKHOV A D GURCHENKO E Z GUSAKOV S HEURAUX M A IRZAK L A ESIPOV T P KIVINIEMI C LECHTE S LEERINK P NISKALA G ZADVITSKIY 2020Plasma Science and Technology2020,22,6:0
4Reconstruction of hollow areas in density profiles from frequency swept reflectometry显示文摘The standard density profile reconstruction techniques are based on the WKB approximation of the probing wave’s phase,making them unable to properly reconstruct blind areas in the cut-off frequency profile.The reconstruction suffers a significant immediate error that is not rapidly damped.It is demonstrated that even though no reflections occur inside the hollow region causing the blind area,the higher probing frequencies that propagate through it carry information that can be used to estimate its properties.The usually ignored full-wave effects were investigated with the use of full-wave simulations in 1 D,with special attention paid to the frequency band where they are dominant.A database of perturbation signals was simulated onfive-dimensions of parameters and an application of the database inversion was demonstrated for a magnetic island in a Tore Supra discharge.The new adapted reconstruction scheme improved the description of the density profile inside the hollow region and also along 10 cm after it.Rennan B MORALES Stéphane HEURAUX Roland SABOT Sébastien HACQUIN Frédéric CLAIRET the Tore Supra Team 2020Plasma Science and Technology2020,22,6:0
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