Conceptual design of the Megajoule laser target area

Daniel Schirmann; Charles Bayer; Luc Bianchi; Denis Blossier; Thierry Bontoux; Jean-Luc Bourgade; Patrick Chadeyron; Patrick Coffin; Henry Patrick Jacquet; Francois Jequier; Jean Claude Gomme; Olivier Heuze; Jean-Pierre Le Breton; Arnault Lheritier; Paul Lucchese; Thierry Lonjaret; Gerard Sibille

doi:10.1117/12.294319

8 December 1997 Conceptual design of the Megajoule laser target area

Daniel Schirmann, Charles Bayer, Luc Bianchi, Denis Blossier, Thierry Bontoux, Jean-Luc Bourgade, Patrick Chadeyron, Patrick Coffin, Henry Patrick Jacquet, Francois Jequier, Jean Claude Gomme, Olivier Heuze, Jean-Pierre Le Breton, Arnault Lheritier, Paul Lucchese, Thierry Lonjaret, Gerard Sibille

Author Affiliations +

Proceedings Volume 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference; (1997) https://doi.org/10.1117/12.294319
Event: Second International Conference on Solid State Lasers for Application to ICF, 1996, Paris, France

Abstract

The Laser Megajoule is the project equivalent in France to the National Ignition Facility project in USA. The laser has been sized to achieve ignition of a small amount of DT and to produce fusion energy in laboratory with a significant gain, by imploding small capsules filled with a DT mixture. The target area has to be designed to contain the maximum threats imposed by large emissions of neutrons, x-rays and debris due to the explosion of the target. We describe the 10 m diameter target chamber. Prediction calculations of the x-ray threats on the debris shields and the first wall are also detailed. We show that the first wall has to be protected by refractive materials and that low porosity plasma-sprayed boron carbide is potentially a good candidate. We also show that high velocity shrapnels generated by neutron, x-ray and ion deposition in the materials close to the target could also be a threat for the target chamber first wall and optics.

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Daniel Schirmann, Charles Bayer, Luc Bianchi, Denis Blossier, Thierry Bontoux, Jean-Luc Bourgade, Patrick Chadeyron, Patrick Coffin, Henry Patrick Jacquet, Francois Jequier, Jean Claude Gomme, Olivier Heuze, Jean-Pierre Le Breton, Arnault Lheritier, Paul Lucchese, Thierry Lonjaret, and Gerard Sibille "Conceptual design of the Megajoule laser target area", Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); https://doi.org/10.1117/12.294319

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