Minggu, 15 Mei 2022

This Compact Tokamak Is on the Verge of Commercial Energy Production

A privately-owned tokamak in the United Kingdom has reportedly achieved ignition temperature for nuclear fusion, meaning the reactor has reached the threshold for commercial energy production.

Tokamak Energy, an amusingly hard-to-Google company based in Oxford in the south of England, has been working on tokamak reactors since 2009. Even before that, the group was founded as part of England's national Culham Centre for Fusion Energy, with decades of history as part of the world's nuclear fusion research efforts. (Private companies like Tokamak Energy, which spin off of research facilities housed at universities or as part of government programs, are surprisingly common. One battery researcher tells Popular Mechanics that the reason is simple: students and public funds should be doing new research, not slogging through the long road of research and development on an emerging commercial product.)

A tokamak is a donut-shaped—or, in this case, spherical—nuclear fusion reactor in which swirling plasma is brought to millions of degrees in temperature in order to begin, well, fusing. The goal is to smash nuclei together and generate energy. Tokamak Energy's research centers on the ST40 reactor, a spherical tokamak that has made test runs on its way toward the productive ratio known as "ignition" in the field of nuclear fusion. Ignition refers to the point at which the energy produced by a fusion reactor is greater than the amount required to kickstart it up to millions of degrees. In other words: it's a very, very high barrier.

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