Speaker
Description
With the transition to a full-tungsten (W) machine, detailed understanding of the W erosion source and transport processes are key to assessments of the main plasma performance. In work conducted under the auspices of the ITER Scientist Fellow Network, the capability of the recently upgraded kinetic ion transport model (KIT) of EMC3-EIRENE [1] for W transport with the full shaped 3D wall geometry (including port structures) is demonstrated. For an EMC3-EIRENE plasma background of a neon-seeded ITER H-mode scenario from the DT-1 campaign (c.f. M. Jia et al, this conference) an artificial W source is used as a proxy for physical sputtering in the KIT model to assess the core penetration of W.
A second application addresses the Start of Research Operation (SRO) phase of ITER with a focus on W sputtering and kinetic transport in a pure deuterium plasma background with Resonant Magnetic Perturbations (RMP) for Edge Localized Mode suppression (c.f. J. Van Blarcum et al, this conference). Here, particular attention is given to the interaction between the non-axisymmetric scrape-off-layer (SOL) lobe structures and the inertially cooled Temporary First Wall (TFW) of ITER. Employing EMC3-EIRENE-KIT, RMP-induced W sputtering and subsequent kinetic transport to assess the resulting W penetration into the confined core region is presented.
Discrepancies seen in a previous benchmark [2] of EMC3-EIRENE-KIT against the ERO2.0 code [3] were traced back to inaccuracies in the magnetic-field input provided to ERO2.0. After correcting the magnetic input data, the two codes show nearly perfect agreement under comparable model conditions. New benchmark results are presented and provide a validation basis for applying EMC3-EIRENE-KIT to reactor-relevant impurity transport. A fully self-consistent coupling of impurity fluxes between EMC3 and EIRENE is under development.
Acknowledgement
The authors gratefully acknowledge computing time granted through JARA on the supercomputer JURECA [4] at Forschungszentrum Jülich.
References
[1] D. Harting et al., Nucl. Mater. Energy 33 (2022) 101279. https://doi.org/10.1016/j.nme.2022.101279
[2] D. Harting et al., Nucl. Mater. Energy 42 (2025) 101887. https://doi.org/10.1016/j.nme.2025.101887
[3] S. Rode et al., Contrib. Plasma Phys. e202100172 (2022). https://doi.org/10.1002/ctpp.202100172
[4] Jülich Supercomputing Centre. (2021). JURECA: Data Centric and Booster Modules implementing the Modular Supercomputing Architecture at Jülich Supercomputing Centre Journal of large-scale research facilities, 7, A182. http://dx.doi.org/10.17815/jlsrf-7-182