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| Auteurs principaux: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2605.03599 |
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| _version_ | 1866911651742089216 |
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| author | Yu, Guodong Nie, Xianyi Seo, Gwanggeun Huang, Daxing Liu, Hengqian Liu, Junhao Cho, Jaebeom Kim, Hyun-Su Xie, Jinlin Zhuang, Ge Ding, Fazhu Park, Jong-Kyu Zhu, Caoxiang |
| author_facet | Yu, Guodong Nie, Xianyi Seo, Gwanggeun Huang, Daxing Liu, Hengqian Liu, Junhao Cho, Jaebeom Kim, Hyun-Su Xie, Jinlin Zhuang, Ge Ding, Fazhu Park, Jong-Kyu Zhu, Caoxiang |
| contents | Tokamaks and stellarators are the leading magnetic-confinement concepts for fusion, but they rely on complementary design principles. Tokamaks use simple axisymmetric coils and plasma current, whereas stellarators use externally generated three-dimensional fields for steady-state operation. Here, we propose a programmable stellarator--tokamak hybrid that uses a fixed set of simple planar coils to access a broad magnetic-configuration space. The device adds 288 dipole-field coils to a tokamak-like coil set, with only six independent coil geometries required by symmetry. By programming coil currents, the same hardware generates more than 1.66 million optimized stellarator configurations spanning quasi-axisymmetry, quasi-helical symmetry, and quasi-isodynamicity, as well as tokamak-relevant three-dimensional perturbations. Representative configurations exhibit nested magnetic surfaces, low neoclassical transport, and favorable energetic-particle confinement. This approach enables rapid magnetic-configuration discovery without hardware redesign. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_03599 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A programmable stellarator-tokamak hybrid for million-scale magnetic-configuration discovery Yu, Guodong Nie, Xianyi Seo, Gwanggeun Huang, Daxing Liu, Hengqian Liu, Junhao Cho, Jaebeom Kim, Hyun-Su Xie, Jinlin Zhuang, Ge Ding, Fazhu Park, Jong-Kyu Zhu, Caoxiang Plasma Physics Tokamaks and stellarators are the leading magnetic-confinement concepts for fusion, but they rely on complementary design principles. Tokamaks use simple axisymmetric coils and plasma current, whereas stellarators use externally generated three-dimensional fields for steady-state operation. Here, we propose a programmable stellarator--tokamak hybrid that uses a fixed set of simple planar coils to access a broad magnetic-configuration space. The device adds 288 dipole-field coils to a tokamak-like coil set, with only six independent coil geometries required by symmetry. By programming coil currents, the same hardware generates more than 1.66 million optimized stellarator configurations spanning quasi-axisymmetry, quasi-helical symmetry, and quasi-isodynamicity, as well as tokamak-relevant three-dimensional perturbations. Representative configurations exhibit nested magnetic surfaces, low neoclassical transport, and favorable energetic-particle confinement. This approach enables rapid magnetic-configuration discovery without hardware redesign. |
| title | A programmable stellarator-tokamak hybrid for million-scale magnetic-configuration discovery |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2605.03599 |