Simulation of dynamics of carbon dust particles in the JT-60U tokamak

The transport of carbon dust particles was investigated in case of the JT-60U tokamak using the dust transport (DUSTT) code. The DUSTT code takes into account various plasma-dust interaction processes. Background plasma parameters in the JT-60U such as the densities and temperatures of the electrons, ions and neutral atoms, and flow fields were computed with the UEDGE code. Three dimensional trajectories, temperature evolution, and radius variation of dust particles launched from different positions in the JT-60U tokamak were simulated numerically to study the dynamics and transport of dust particles there. As a result, the dominant forces on the dust particles in this tokamak were studied. The lifetime of dust particles was also estimated and it was found to be dependent mainly on the ion density of the background plasma at the end of the trajectories.