ICRF near-field effects sensitivity to magnetic tilt-angle
This paper complements the study reported in G. Urbanczyk et al 2025 Nucl. Fusion 65 046018 by investigating how near-field effects from Ion Cyclotron Range of Frequency (ICRF) antennas depend on the magnetic geometry, particularly focusing on the sensitivity of rectified sheath potentials and associated impurity production to variations in magnetic field tilt-angle. Simulations were conducted using Petra-M, employing a flat model of the ASDEX Upgrade (AUG) three-strap antenna, and COMSOL, utilizing a curved model of the WEST antenna. Results demonstrate indications of sensitivity of the rectified sheath potentials and impurity sputtering to the alignment of Faraday screen bars with the magnetic field lines, emphasizing the necessity for careful consideration of geometric alignment in antenna design for fusion devices. This trend is consistent with experimental data measured with various diagnostics.
Authors
- S. Shiraiwa (ORCID: https://orcid.org/0000-0001-5249-0441)
- S. Heuraux (ORCID: https://orcid.org/0000-0001-7035-4574)
- R. Ochoukov (ORCID: https://orcid.org/0000-0002-5936-113X)
- G. Urbanczyk (ORCID: https://orcid.org/0000-0002-4026-6802)
- N. Bertelli (ORCID: https://orcid.org/0000-0002-9326-7585)
- R. Dux
- R. Bilato (ORCID: https://orcid.org/0000-0002-0578-9333)
- L. Colas (ORCID: https://orcid.org/0000-0002-4573-3326)
- J. Hillairet (ORCID: https://orcid.org/0000-0002-1073-6383)
- J. Moritz (ORCID: https://orcid.org/0000-0002-4593-6270)
- N. Fedorczak (ORCID: https://orcid.org/0000-0001-7123-7433)
- W. Tierens (ORCID: https://orcid.org/0000-0002-6979-8140)
- V. Bobkov (ORCID: https://orcid.org/0000-0002-2328-9308)
- J.P. Gunn
- Léonel Tsowémoo Faabomvé
- Raymond Diab
- and EUROfusion Tokamak Exploitation Team WEST Team
- ASDEX Upgrade Team
Institutions
- Oak Ridge National Laboratory (US)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Princeton Plasma Physics Laboratory (US)
- Plasma Technology (United States) (US)
- Max Planck Institute for Plasma Physics (DE)
- Institut Jean Lamour (FR)
Publication Details
- Journal
- EPJ Web of Conferences
- Published
- 2026-01-01
- DOI
- https://doi.org/10.1051/epjconf/202634602009
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Israel Cancer Research Fund
- National Energy Research Scientific Computing Center
- EUROfusion
- European Commission
- Office of Science
- Euratom Research and Training Programme
- Lawrence Berkeley National Laboratory
- Princeton Plasma Physics Laboratory