Tokamaks and ITER: Building Fusion Reactors on Earth

A tokamak is a doughnut-shaped device designed to contain hot plasma for fusion.
Powerful magnetic fields keep the plasma from touching the reactor walls.
Inside, temperatures soar to over 150 million °C—hotter than the Sun’s core.
Tokamaks use hydrogen isotopes like deuterium and tritium as fusion fuel.
ITER, now under construction in France, is the world’s largest tokamak project.
ITER aims to produce 10 times more energy than the power used to heat its plasma.
It represents a global collaboration of 35 nations pushing fusion forward.
Success at ITER would prove fusion as a large-scale, carbon-free energy source.
Challenges include maintaining plasma stability and handling extreme heat loads.
Tokamaks like ITER are humanity’s boldest step toward replicating the Sun’s power on Earth.