Enhanced performance in quasi-isodynamic max-$J$ stellarators with a turbulent particle pinch
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917423848882176 |
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| author | Plunk, G. G. Goodman, A. G. Xanthopoulos, P. Costello, P. Smith, H. M. Aleynikova, K. Beidler, C. D. Drevlak, M. Stroteich, S. Helander, P. |
| author_facet | Plunk, G. G. Goodman, A. G. Xanthopoulos, P. Costello, P. Smith, H. M. Aleynikova, K. Beidler, C. D. Drevlak, M. Stroteich, S. Helander, P. |
| contents | Recent stellarator reactor designs demonstrate mostly outward turbulent particle transport, which, without advanced fueling technology, inhibits the formation of density gradients needed for confinement. We introduce ``SQuID-$τ$'', a self-fueling quasi-isodynamic stellarator capable of sustaining density peaking through inward particle transport caused by turbulence. Temperature and density profile predictions based on high-fidelity gyrokinetic simulations demonstrate enhanced performance, significantly relaxing constraints on the size and magnetic field strength for reactor designs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_19319 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhanced performance in quasi-isodynamic max-$J$ stellarators with a turbulent particle pinch Plunk, G. G. Goodman, A. G. Xanthopoulos, P. Costello, P. Smith, H. M. Aleynikova, K. Beidler, C. D. Drevlak, M. Stroteich, S. Helander, P. Plasma Physics Recent stellarator reactor designs demonstrate mostly outward turbulent particle transport, which, without advanced fueling technology, inhibits the formation of density gradients needed for confinement. We introduce ``SQuID-$τ$'', a self-fueling quasi-isodynamic stellarator capable of sustaining density peaking through inward particle transport caused by turbulence. Temperature and density profile predictions based on high-fidelity gyrokinetic simulations demonstrate enhanced performance, significantly relaxing constraints on the size and magnetic field strength for reactor designs. |
| title | Enhanced performance in quasi-isodynamic max-$J$ stellarators with a turbulent particle pinch |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2507.19319 |