3D Modelling of the Lithium Injection Experiment in H-Mode Plasma of EAST

Investigations of lithium transport in H-mode plasma of EAST tokamak have been performed by the three-dimensional fluid code EMC3-EIRENE. The simulation results show that the toroidally-localized lithium injection at the low field side (LFS) leads to a toroidally non-axisymmetric distribution of the Li1+ and Li2+ ions. The field line tracing approach is utilized to carry out a detailed study on the distributions of the Li1+ and Li2+ ions. It is found that Li1+ ions mainly reside at the LFS while Li2+ ions can transport from LFS to the high field side. The relationship between mean free path and connection length for Li1+ and Li2+ ions has been discussed. The 3D line-integration images of deuterium and lithium emission spectra modelled by EMC3-EIRENE are in qualitative consistency with the experiment results.