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Saturday, June 13, 2026
Openstar Technologies — Technical Profile & Analysis
Deep-dive assessment of the Levitated Dipole architecture, fuel path, and market positioning.
Technology Assessment & Commercial Milestones
Magneto-Inertial, Pulsed & Alternative Cores
Pulsed compression schemes that explicitly avoid massive static superconducting magnets, prioritising upfront-capex reductions and modular replicability.
Reactor design
Magnetic / Levitated Dipole
Core tech focus
Levitated superconducting rings
Key milestones
'Junior' first plasma (2024).
Levitated superconducting dipole that exploits Jupiter-like magnetic topology for native turbulence suppression — one of the few D-D / p-¹¹B-capable architectures with demonstrated first plasma.
FRC, MTF, sheared-flow Z-pinch and levitated dipole topologies. Helion's magneto-inertial FRC bypasses the thermal steam cycle entirely — plasma magnetic energy directly induces electricity in surrounding coils on expansion. TAE's continuous beam-driven FRC targets p-¹¹B, demanding triple products on the order of 10²⁴–10²⁵ keV·s·m⁻³.
- Pulsed-rep-rate engineering: sustaining 1–10 Hz operation with millisecond-scale energy recovery.
- For aneutronic FRC (TAE), bremsstrahlung scales as Pbrems ∝ Tₑ^½, capping Pfus/Pbrems at ~0.2–0.3 without non-thermal ion distributions.
- For MTF (General Fusion), liquid-metal vortex stability under pneumatic shock and synchronisation of dozens of pistons.
- For sheared-flow Z-pinch (Zap), maintaining kink-stability at commercial pulse repetition rates.
- Elimination of large superconducting magnet assemblies removes the single largest capex line in tokamaks.
- Direct-conversion architectures bypass the 35–40% Rankine/Brayton thermodynamic ceiling, pushing net plant efficiency past 60–70%.
- Liquid-metal first-walls (General Fusion) eliminate first-wall replacement cycles entirely.
Helion holds the industry's singular commercial benchmark — a binding Microsoft 50 MW PPA for 2028. D-³He fuel and direct induction allow compact, high-rep-rate modules suited to hyperscaler data-centre siting. General Fusion offers radical mechanical simplicity by replacing lasers and brittle superconductors with pistons, solving the neutron-wall problem via a rotating liquid-lithium barrier. Zap has demonstrated 1.6 GPa plasma pressure, suggesting magnet-free architectures may be the lowest-capex route.
Sourced from the 2026 Global Fusion Energy Comparison — triple-product physics, DEC architecture, and LCOE framework.
Who built Openstar Technologies
Based in Wellington, New Zealand, Openstar Technologies is taking a radically unique approach by reviving the levitated dipole reactor design—a concept inspired by the highly stable magnetic fields surrounding planets like Jupiter. Founded by HTS magnet innovator Ratu Mataira and structural designer Al Simpson, the team secured a massive technical pillar in Dr. Darren Garnier, an elite MIT alumnus who co-managed the world's premier levitated dipole experiment (LDX). By floating a massive, high-field superconducting magnet directly inside a vacuum chamber, this team is moving through rapid hardware iterations to achieve remarkably stable, turbulence-free plasma confinement.
Ratu Mataira
PhD candidate in Superconducting Engineering, Victoria University of Wellington
Al Simpson
Advanced structural engineering designer
Darren Garnier
PhD in Plasma Physics, MIT; former Columbia University researcher
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