Research news from the division Plasma Edge and Wall
PFMC-15 Poster Prize for Gerd Meisl
Gerd Meisl from IPP’s E2M division was awarded the poster prize sponsored by Physica Scripta at the PFMC-15 conference (15th International Conference on Plasma-Facing Materials and Components for Fusion Applications). PFMC-15 took place from May 18 to 22 in Aix-en-Provence.
The Physica Scripta Poster Prize is dedicated to young researches (PhDs or PostDocs) “in recognition of the quality of work presented at the PFMC-15”.
In the poster with the title „Simulating the nitrogen migration in Be/W tokamaks with WallDYN“ he investigates the impurity transport and the corresponding nitrogen deposition in nitrogen-seeded plasmas. Due to chemical interactions of nitrogen with tungsten and beryllium the plasma-surface-interaction processes in nitrogen-seeded plasma are much more complex than those in comparable noble-gas-seeded plasmas.
The picture shows the local surface distribution of nitrogen retention in a simulated anticipated ITER discharge. High nitrogen retention (red and brown areas) occurs in areas of high beryllium deposition. The dominating process is co-deposition of nitrogen with beryllium.