X-ray response predictions of first-wall-material candidates for the LMJ target chamber

Francois Jequier; Gerard Sibille; G. Daval

doi:10.1117/12.294265

8 December 1997 X-ray response predictions of first-wall-material candidates for the LMJ target chamber

Francois Jequier, Gerard Sibille, G. Daval

Proceedings Volume 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference; (1997) https://doi.org/10.1117/12.294265
Event: Second International Conference on Solid State Lasers for Application to ICF, 1996, Paris, France

Abstract

The Laser Megajoule facility will chiefly be used to study the ignition of DT fuel capsules. All the elements contained in the chamber (diagnostics insertion system, target holder, first wall, debris shields) will undergo X-ray fluences and debris emissions. Numerical simulations using the 1D codes FSCATT and DELPOR (hydrodynamics and thermodynamics model) have been performed in order to characterize the mechanical behavior of different candidate materials under X-ray fluence: aluminum, boron carbide, pyrolytic graphite and fused silica. Two spectra have been utilized for these simulations: a 350 eV blackbody spectrum and the gold X-ray conversion Phebus spectrum. Vaporized and melt thicknesses are assessed as well as pressure in the materials for X-ray fluences ranging from 0.3 J/cm² to 100 J/cm². For aluminum, comparisons with LLNL simulations and with experiments carried out on Phebus and Nova facilities are given.

Citation Download Citation

Francois Jequier, Gerard Sibille, and G. Daval "X-ray response predictions of first-wall-material candidates for the LMJ target chamber", Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); https://doi.org/10.1117/12.294265

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