Most fusion companies publish claims. We published the machine that generates them — and this page runs it, live, in your browser. A WebAssembly Python runtime loads the same reduced-order engine deposited on Zenodo with the MetroVolt design paper: Bosch–Hale reactivities, the profile-integrated Mode-C burn point, the S78 field lever, the S63 cost ladder. Nothing is mocked and nothing leaves your tab — before any control unlocks, the engine re-derives the paper's frozen numbers in front of you.
The flagship. Move core ion temperature, density, and the D–³He mix on the frozen machine — fusion power, neutron fraction, wall load, and the required confinement recompute live, with honesty badges that trip the moment you leave the paper's stated envelope.
Open the burn explorer →The four fusion reactivity curves, from the verbatim Bosch–Hale coefficients. See why D–³He turns on an order of magnitude above D–T temperatures — and what it pays back in charged products instead of neutrons.
Open the reactivity curves →Bpeak = B₀R₀/Rc, against two hard lines: the demonstrated 24.4 T single-coil value and the frozen 24.6 T design point. The deposited baseline / bank / spend cases are one click away.
Open the field lever →Wright's-law learning on FOAK capital, from the deposited basis. Reproduces the paper's printed Table-26 cells at the defaults — then lets you stress every assumption yourself.
Open the cost ladder →Every equation on these pages traces to the citable archive: DOI 10.5281/zenodo.21248916 — 81 analyses, all Tier-1 code, Tier-2 flagship-code decks, CC BY 4.0. One command reproduces the results.
What's in the deposit →A single comprehensive manuscript in four parts — equilibrium to levelised cost under one consistency chain. arXiv preprint (physics.plasm-ph) posting July 2026; submitted to IOP Nuclear Fusion.
Reader-friendly whitepapers →All 81 analyses, S01–S81, each mapped to its inputs, code, outputs, and pass/fail status — including the adverse and null results, deposited on purpose.
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