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What are the main approaches to fusion?
The two big families are magnetic confinement (tokamaks and stellarators) and inertial confinement (lasers). Kronos is a compact, high-field magnetic tokamak.
Knowing the landscape clarifies the Kronos choices. See tokamak, stellarator, inertial confinement fusion, and what is a spherical tokamak?
Questions & answers
What are the main ways to do fusion?
Two broad families. Magnetic confinement holds a steady plasma in a magnetic bottle — the tokamak and the stellarator are its main devices. Inertial confinement compresses a fuel pellet with lasers or beams in rapid pulses. Kronos uses magnetic confinement, in the form of a compact, high-field spherical tokamak.
Why so many approaches?
Because fusion is hard, and there's more than one way to meet the temperature-density-confinement condition. Each approach trades off differently on steadiness, complexity, and engineering. Magnetic confinement suits a continuously-running power plant.
What distinguishes the Kronos approach within magnetic confinement?
High field (24.6 T HTS magnets), low aspect ratio (spherical), a negative-triangularity edge, low-neutron D–³He fuel, and direct energy conversion — a specific combination aimed at compact, economical, firm power.