Gyrokinetic PIC Study on RMP Affected Neoclassical Transport in Toroidal Plasmas
In magnetically confined fusion plasmas, the breaking of ‘magnetic flux-surfaces’ due to resonant magnetic perturbations (RMPs) can generate magnetic islands and alter field topology to significantly impact plasma confinement and transport. This work investigates the effect of magnetic islands on neoclassical radial energy transport within the core plasma of an analytic circular tokamak using the XGC-S global gyrokinetic particle-in-cell code. Findings from our simulations revealed substantial enhancements in electron neoclassical radial energy diffusivity in and around the islands, in addition to a newly observed two-peak structure at the O/X-points and outer island boundary in the electron diffusivity profile.
Authors
- R. Kanno (ORCID: https://orcid.org/0000-0002-1642-1235)
- G. Kawamura
- Toseo Moritaka (ORCID: https://orcid.org/0000-0003-2513-0453)
- R. Hager (ORCID: https://orcid.org/0000-0002-4624-3150)
- Chen Chang (ORCID: https://orcid.org/0000-0002-8861-8694)
- J. Li (ORCID: https://orcid.org/0000-0003-3012-3477)
Institutions
- National Institutes of Natural Sciences (JP)
- The Graduate University for Advanced Studies, SOKENDAI (JP)
- Princeton Plasma Physics Laboratory (US)
- National Institutes for Quantum Science and Technology (JP)
Publication Details
- Journal
- Plasma and Fusion Research
- Published
- 2025-04-16
- DOI
- https://doi.org/10.1585/pfr.20.1201019
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Korea Institute of Science and Technology
- China Scholarship Council
- Japan Society for the Promotion of Science
- FP7 Fusion Energy Research
- Princeton Plasma Physics Laboratory