COLLECTIVE PIC SIMULATIONS ON INTERACTION BETWEEN ULTRAHIGH INTENSE LASER AND REALISTIC PLASMA FOR FAST IGNITION

摘要

We must simulate 1) overall fluid dynamics, 2) laser-plasma interaction, and 3) hot electron energy deposition with different codes and integrate them to prove fuel burning in the Fast Ignition. First, we introduce Arbitrary Lagrangian Eulerian hydro code to calculate the overall fluid dynamics. Second, collective PIC code must be used to simulate the interaction between ultrahigh intense ignition lasers and plasmas. Finally, Fokker-Planck code is used to compute energy deposition and to estimate the fuel burning. We will run these codes individually, collaborating each other with data transfer via the computer network. Since communication among these codes is very straightforward, we design a lightweight protocol, Distributed Computing Collaboration Protocol, to transfer data and integrate them. We have demonstrated code coupling and could conclude that realistic plasma profile was essential to precisely simulate the Fast Ignition. The ignition laser must interact with the dense gold plasma with a cone-guided target. Thus we have also estimated the scaling laws of absorption rate, which were expected to be different from present results, with density gradient and maximum density in realistic plasma profiles.