A New Multiscale Multyphysics Code for NIF Target Debris Analysis

Speaker: Dr. Alice Koniges, Center for Applied Scientific Computing, LLNL

Targets from high-powered inertial confinement fusion laser fac ilities can produce a significant amount of debris and shrapnel that can damag e optical and diagnostic components. We have developed a new multiscale, multi physics code that calculates the way that high temperature materials ablate, f ragment and vaporize. The code combines the Arbitrary Lagrangian Eulerian (ALE ) method with Adaptive Mesh Refinement (AMR) to provide a robust and efficien t simulation environment. Physics packages are based on a fluid model of the plasma with optional radiation diffusion and material strength/failure/fragme ntation models. The code is built on a scalable AMR framework. We give example s of target calculations for upcoming National Ignition Facility (NIF) experim ents as well as experiments at other high-powered laser facilities.

Last modified: Wed Jun 18 10:06:51 EDT 2008