Replication Data for: Disruptions, Runaway-Electron Avalanche and Electromagnetic Loads in a Compact Spherical-Tokamak Breeder: The Design Case for Shattered-Pellet Mitigation
Year: 2026
Type: dataset
Abstract: Replication data for the paper Disruptions, Runaway-Electron Avalanche and Electromagnetic Loads in a Compact Spherical-Tokamak Breeder: The Design Case for Shattered-Pellet Mitigation (Kronos Fusion Energy 2026 Publication Series, paper 2.9), published at doi:10.5281/zenodo.22645724. Abstract of the paper. The disruption response is the credibility gap a compact, high-current spherical-tokamak (ST) programme is expected to answer, because such a machine stores a large magnetic and thermal energy in a small volume and releases it fast. We formalise the disruption, runaway-electron (RE), and electromagnetic-load problem for the frozen Hyperion breeder design point (=9.66 MA, =1.20 m, aspect ratio A=2.5, elongation κ=2.0, triangularity δ=-0.30, on-axis field B_0=8 T, centrepost peak field 16.84 T) and solve it with a hierarchy of reduced-order models anchored on a NIMROD-verified free-boundary equilibrium. We derive the inductive current-quench (CQ) circuit model, the Connor–Hastie and Aleynikov–Breizman runaway threshold fields, the Rosenbluth–Putvinski close-collision avalanche, and the halo-current force balance as explicit equations, then evaluate them across the plasma-resistivity and quench-rate parameter space on the NVIDIA GPU HPC campaign that also ran the reference extended-MHD (NIMROD) and fluid-kinetic runaway (DREAM) codes. The result is honest and uncomfortable. The CQ time is =7–19 ms, set by the plasma inductance-over-resistance ratio (L_p≈ 2.6 ) at a post-thermal-quench temperature of 5–10 eV; this window sets the mitigation-trigger deadline. 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. disruptions-and-runaway-electrons.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/lbv9fz
Author: Ford, P I
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7214589404