Advanced spatial discretizations in the B2.5 plasma fluid code

Abstract Plasma wall interaction modeling for fusion devices requires consistent plasma backgrounds, which are typically provided by SOL codes like SOLPS 5 [1] . However, the computational domain of these codes typically does not cover the far scrape-off layer, resulting in large uncertainties in the modeling of the interaction between the plasma and the main chamber wall. The work presented here addresses this issue by extending the B2.5 plasma fluid code to provide plasma backgrounds up to the device wall.