Year: 2026
Type: article
Abstract: ABSTRACT Experiments in the stellarator Wendelstein 7‐X indicate that particle drifts have a significant impact on the plasma in the scrape‐off layer. However, drift effects have been absent in the mean‐field transport codes such as EMC3‐Eirene. For this reason, we present the first steps towards a mean‐field model that incorporates drifts. The code is based on the BOUT++ framework and includes an EMC3‐Eirene‐like transport model that yields steady‐state plasma profiles. To investigate the potential distribution on these profiles, we include a 3‐field model that evolves the electrostatic potential and verifies the implementations via the method of manufactured solutions. As a first application, we carry out simulations of the scrape‐off layer of Wendelstein 7‐X. The inferred potential distribution is predominantly aligned with the separatrix.
Source: Contributions to Plasma Physics
DOI: 10.1002/ctpp.70157
Authors: T. Tork, F. Reimold, D. Bold, B. Shanahan, B. Dudson, A. Stegmeir, P. Manz, The W7‐X Team
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,930
Awards: G115085052, G1356433355, G14554683, G157624241, G2145270357, Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium, G2293481551, G3562821882, G3669113783, G5172252545, G5344189563, G991281326
OpenAlex ID: W7171328337