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ITER - International Thermonuclear Experimental Reactor


ITER ("The Way" in Latin) is one of the most ambitious

energy projects in the world today.

In southern France, 35 nations are collaborating to build the

world's largest tokamak, a magnetic fusion device that has

been designed to prove the feasibility of fusion as a large-scale

and carbon-free source of energy based on the same principle

that powers our Sun and stars.

The experimental campaign that will be carried out at ITER is crucial to advancing fusion science and preparing the way for the fusion power plants of tomorrow.

ITER will be the first fusion device to produce net energy. ITER will be the first fusion device to maintain fusion for long periods of time. And ITER will be the first fusion device to test the integrated technologies, materials, and physics regimes necessary for the commercial production of fusion-based electricity.

Thousands of engineers and scientists have contributed to the design of ITER since the idea for an international joint experiment in fusion was first launched in 1985. The ITER Members—China, the European Union, India, Japan, Korea, Russia and the United States—are now engaged in a 35-year collaboration to build and operate the ITER experimental device, and together bring fusion to the point where a demonstration fusion reactor can be designed.

We invite you to explore the ITER website for more information on the science of ITER, the ITER international collaboration and the large-scale building project that is underway in Saint Paul-lez-Durance, southern France.                   Credit: ITER images

tokamak system.jpg
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