Geodesic
Numerical simulations of the focal spot generated by a set of laser beams : LMJ
Antoine Bourgeade1 ; Boniface Nkonga2
1 CEA/CESTA, B.P. 2, 33114 Le Barp, France
2 Department of Mathematics, University of Nice, France
ESAIM. Proceedings, Tome 32 (2011), pp. 1-17.

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In order to get the fusion of small capsules containing a deuterium-tritium nuclear fuel, the MegaJoule laser (LMJ) will focus a large number of laser beams inside a cylinder (Hohlraum) which contains the fusion capsule. In order to control this process we have to know as well as possible the electromagnetic field created by the laser beams on both Hohlraum’s apertures. This article describes a numerical tool which computes this electromagnetic field from the definition of the laser beams in front of the focusing gratings. Despite its apparent simplicity, this computation necessitates a two step plane wave decomposition and the size of the data requires the use of a parallel strategy with a large number of processors.
DOI : 10.1051/proc/2011008

Antoine Bourgeade 1 ; Boniface Nkonga 2

1 CEA/CESTA, B.P. 2, 33114 Le Barp, France
2 Department of Mathematics, University of Nice, France 
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Antoine Bourgeade; Boniface Nkonga. Numerical simulations of the focal spot generated by a set of laser beams : LMJ. ESAIM. Proceedings, Tome 32 (2011), pp. 1-17. doi : 10.1051/proc/2011008. http://geodesic.mathdoc.fr/articles/10.1051/proc/2011008/

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