What does this research mean for the field?

An optimized compact high-βN tokamak reactor with negative triangularity (A = 2.0, κ = 1.8, δ = -0.10) can achieve 2.79 GW of fusion power while satisfying simultaneous engineering and stability constraints. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Identify the optimal plasma geometry for a high-normalized-beta tokamak operating at βN = 2.8 under coupled engineering, vertical stability, and magnetohydrodynamic constraints.

September 3, 2026Open Access

Optimized Plasma Geometry for High-βN Tokamak: 2.79 GW Fusion Power Under Simultaneous Engineering and Stability Constraints

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Identify the optimal plasma geometry for a high-normalized-beta tokamak operating at βN = 2.8 under coupled engineering, vertical stability, and magnetohydrodynamic constraints.
Solved the Grad-Shafranov equilibrium equation using finite-difference discretization on a 180x220 rectangular mesh.
Conducted a systematic parameter scan across aspect ratio (1.8 to 3.4), elongation (1.5 to 2.4), and triangularity (-0.1 to 0.35) using Bosch-Hale D-T reactivity parametrizations.
The optimal reactor configuration (aspect ratio A = 2.0, elongation κ = 1.8, triangularity δ = -0.10, major radius R0 = 6.2 m, and toroidal field B0 = 5.3 T) produced a peak fusion power of Pfus = 2.79 GW.
At an ion temperature T0 = 16 keV, the design established a plasma current Ip = 20.22 MA, an edge safety factor q95 ≈ 5.0, and a wall loading Pwall = 2.53 MW/m^2 while saturating the 20 MA coil engineering limit.

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Implication

Numerical optimization demonstrates 2.79 GW fusion power in a compact high-beta tokamak, indicating negative triangularity enhances reactor performance.

Cite This Study

Jean Lauro Muller (2026) studied this question.

synapsesocial.com/papers/6a993586636c6408cfa7dd0d https://doi.org/10.5281/zenodo.22231424

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Implication

Numerical optimization demonstrates 2.79 GW fusion power in a compact high-beta tokamak, indicating negative triangularity enhances reactor performance.

Optimized Plasma Geometry for High-βN Tokamak: 2.79 GW Fusion Power Under Simultaneous Engineering and Stability Constraints

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Implication

Cite This Study

Optimized Plasma Geometry for High-βN Tokamak: 2.79 GW Fusion Power Under Simultaneous Engineering and Stability Constraints

Key Points

Discussion

Implication

Cite This Study

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