A weighted matching scheme of magnetic coil design for FRC shaping control
Abstract The two-dimensional (2D) separatrix shaping plays a crucial role in the confinement of the field-reversed configuration (FRC), and the magnetic coils serve as an effective means for its control. In this work we develop a weighted matching method to obtain an MHD equilibrium that accurately corresponds to the shape of target separatrix. By iteratively calculating the coil currents, the plasma current, and the equilibrium magnetic flux, the equilibrium separatrix progressively converges towards the desired shape. The coil currents are determined through a matching method, and the NIMEQ code is employed to compute the FRC equilibrium with a rigid rotor model of plasma distribution. This approach enables the adaption of the equilibrium separatrix into any desired shape, thus offering a potential scheme for the design and control of the 2D shaping of FRC plasma.
Authors
- Jiaxing Liu (ORCID: https://orcid.org/0000-0002-9641-4368)
- Ping Zhu (ORCID: https://orcid.org/0000-0002-5773-8861)
- Haolong Li (ORCID: https://orcid.org/0000-0002-7050-1295)
- Zhipeng Chen (ORCID: https://orcid.org/0000-0002-8330-0070)
- Zitong Qu
Institutions
- University of Wisconsin–Madison (US)
- Shenzhen University (CN)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Plasma Physics and Controlled Fusion
- Published
- 2024-12-12
- DOI
- https://doi.org/10.1088/1361-6587/ad9e77
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- National Natural Science Foundation of China