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Experiments for the validation of debris and shrapnel calculations

2008; IOP Publishing; Volume: 112; Issue: 3 Linguagem: Inglês

10.1088/1742-6596/112/3/032072

1742-6596

Alice Koniges, C.S. Debonnel, James E. Andrew, D. C. Eder, D. Kalantar, N. Masters, Aaron Fisher, Robert Anderson, B Gunney, Bennett Brown, Kalachand Sain, Florian Bonneau, J. L. Bourgade, J.-M. Chevalier, P. Combis, Alain Geille, J. P. Jadaud, Maroni Maroni, D. Raffestin, J-L Ulmer, J. Vierne, Anne‐Marie Tobin, Marc A. Meyers, H. Jarmakani,

Space Satellite Systems and Control

The debris and shrapnel generated by laser targets will play an increasingly major role in the operation of large laser facilities such as NIF, LMJ, and Orion. Past experience has shown that it is possible for such target debris/shrapnel to render diagnostics inoperable and also to penetrate or damage optical protection (debris) shields. We are developing the tools to evaluate target configurations, in order to better mitigate the generation and impact of debris/shrapnel, including development of dedicated modelling codes. In order to validate these predictive simulations, we briefly describe a series of experiments aimed at determining the amount of debris and/or shrapnel produced in controlled situations. We use glass plates and aerogel to capture generated debris/shrapnel. The experimental targets include hohlraums, halfraums, and thin foils in a variety of geometries. Post-shot analysis includes scanning electron microscopy and x-ray tomography. We show results from a few of these experiments and discuss related modelling efforts.