Improved n=1 Empirical Error Field Penetration Threshold Scaling with Ohmic and L-Mode Conventional Tokamak Plasma Discharges

Fuente: arXiv
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Autori principali: Bursch, E. M., Park, J. K., Logan, N. C., Mao, F., Wang, N., Zimmermann, C. F. B., Buttery, R. J., Paz-Soldan, C., Pharr, M., Piron, L., Szepesi, G., Wang, H., Yang, S. M., Contributors, JET, Team, EUROfusion Tokamak Exploitation
Natura: Preprint
Pubblicazione: 2026
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author Bursch, E. M.
Park, J. K.
Logan, N. C.
Mao, F.
Wang, N.
Zimmermann, C. F. B.
Buttery, R. J.
Paz-Soldan, C.
Pharr, M.
Piron, L.
Szepesi, G.
Wang, H.
Yang, S. M.
Contributors, JET
Team, EUROfusion Tokamak Exploitation
author_facet Bursch, E. M.
Park, J. K.
Logan, N. C.
Mao, F.
Wang, N.
Zimmermann, C. F. B.
Buttery, R. J.
Paz-Soldan, C.
Pharr, M.
Piron, L.
Szepesi, G.
Wang, H.
Yang, S. M.
Contributors, JET
Team, EUROfusion Tokamak Exploitation
contents This paper presents an updated n=1 error field penetration threshold scaling, which increases fit quality compared to previous error field scaling laws, is produced from an expanded database, and exhibits reduced uncertainty in projections to future conventional tokamaks. It improves confidence in tokamak engineering tolerances, which are a significant driver of cost and time constraints on device construction. We add J-TEXT data, new JET data, and create the scaling using only conventional tokamak Ohmic and L-mode experiments. Since H-mode plasmas are more resilient to error field penetration, this scaling predicts what is likely the most dangerous regime of error field penetration for new tokamak designs. These decisions improve confidence in the error field penetration threshold scaling and its application in the construction and design decisions of any future conventional tokamak or FPP.
format Preprint
id arxiv_https___arxiv_org_abs_2604_27317
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Improved n=1 Empirical Error Field Penetration Threshold Scaling with Ohmic and L-Mode Conventional Tokamak Plasma Discharges
Bursch, E. M.
Park, J. K.
Logan, N. C.
Mao, F.
Wang, N.
Zimmermann, C. F. B.
Buttery, R. J.
Paz-Soldan, C.
Pharr, M.
Piron, L.
Szepesi, G.
Wang, H.
Yang, S. M.
Contributors, JET
Team, EUROfusion Tokamak Exploitation
Plasma Physics
This paper presents an updated n=1 error field penetration threshold scaling, which increases fit quality compared to previous error field scaling laws, is produced from an expanded database, and exhibits reduced uncertainty in projections to future conventional tokamaks. It improves confidence in tokamak engineering tolerances, which are a significant driver of cost and time constraints on device construction. We add J-TEXT data, new JET data, and create the scaling using only conventional tokamak Ohmic and L-mode experiments. Since H-mode plasmas are more resilient to error field penetration, this scaling predicts what is likely the most dangerous regime of error field penetration for new tokamak designs. These decisions improve confidence in the error field penetration threshold scaling and its application in the construction and design decisions of any future conventional tokamak or FPP.
title Improved n=1 Empirical Error Field Penetration Threshold Scaling with Ohmic and L-Mode Conventional Tokamak Plasma Discharges
topic Plasma Physics
url https://arxiv.org/abs/2604.27317