Replication Data for: Red-Teaming the Frozen Design Point: Current-Drive and beta-Headroom Margins for a Spherical-Tokamak Breeder and Thermal-Barrier versus Centrifugal Plug Alternatives for the Mirror Burner
Year: 2026
Type: dataset
Abstract: Replication data for the paper Red-Teaming the Frozen Design Point: Current-Drive and beta-Headroom Margins for a Spherical-Tokamak Breeder and Thermal-Barrier versus Centrifugal Plug Alternatives for the Mirror Burner (Kronos Fusion Energy 2026 Publication Series, paper 2.101), published at doi:10.5281/zenodo.22645720. Abstract of the paper. A design that publishes its negatives is honest; a design that then bounds whether each negative can be closed is useful. We formalise and execute an adversarial red-team of the binding engineering gates of a compact, negative-triangularity spherical-tokamak breeder (Q=3.076, =85.04, I_p=9.66, δ=-0.30, B_0=8, κ=2.0, =1.20, aspect ratio A=2.5, centrepost peak field 16.84) and its separate deuterium–helium-3 tandem-mirror burner (Q_E=1.318, neutron fraction f_n=5.44%, plug field 26.49, direct-conversion efficiency η_ DEC=0.49). The method is stated as a min–max feasibility program: with the mission anchors held fixed we seek the design move that maximises the weakest normalised gate margin, and we bound each candidate with a conservative reduced-order screening model whose pass implies a high-fidelity pass. Four gates bind. The breeder current-drive burden, which exceeds fusion power in the solenoid-free baseline (=118.5 against =85.04), falls to 50 (-58%, below fusion power) at an advanced operating point that lifts the bootstrap fraction from =0.155 into unused Troyon headroom while raising the 14 source by 1.68×; tritium closure, fragile against the beryllium-multiplier fraction, is restored to a multiplier-independent sub-additive upper bound of TBR1.204 above the 1.05 self-sufficiency threshold; and a reduced-standoff re-entrant materials-test port reaches 19.7dpa fpy^-1 without changing mission power. What this dataset contains data/key_values.csv and data/anchors.json: the frozen design-point values quoted in the paper (symbol, value, unit, provenance), in machine-readable form. data/verification.csv: the validator gates the paper cites, each with its verdict and a link to a live recompute page. figures/: the figures from the paper, as vector PDF, with an inventory. red-team-of-the-binding-gates.data-methods.pdf: methods, the computational codes used, and the full value table. data/data_dictionary.md: column definitions. Every value is a frozen design-point number that is independently re-run and recorded in the Kronos Physics De-Risking Register (doi:10.5281/zenodo.22645689). The paper itself is not duplicated here; read it at the DOI above.
Source: Harvard Dataverse
DOI: 10.7910/dvn/unoppe
Authors: Ford, P I, Kulcinski, G L
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7214578465