Ernest Rutherford, a New Zealand-born British physicist, first proposed the idea of nuclear fusion as a source of energy in 1920.

The Soviet Union was the first country to successfully demonstrate controlled nuclear fusion in 1968, using the Tokamak T-3 device.

ITER (International Thermonuclear Experimental Reactor) is the largest and most powerful nuclear fusion reactor currently in operation, located in Saint-Paul-lès-Durance, France.

Deuterium-Tritium (D-T) is the most commonly studied nuclear fusion reaction for energy production due to its relatively low ignition temperature and high energy output.

Achieving controlled nuclear fusion is challenging due to the combination of high temperatures, plasma instability, and neutron radiation, which require specialized materials and technologies.

In 1997, the Joint European Torus (JET) achieved the first sustained fusion reaction, producing 16 megawatts of power for over two seconds.

The primary goal of the ITER project is to demonstrate the scientific and technological feasibility of fusion energy, paving the way for future commercial fusion reactors.

The ITER project is hosted by France, with contributions from 35 countries, including the United States, China, Japan, and the European Union.

The ITER project is expected to be completed by 2035, with first plasma experiments planned for 2025 and full operation by 2035.

The ITER Organization is responsible for coordinating international efforts in fusion research, overseeing the construction and operation of the ITER project.

Hydrogen isotopes, particularly deuterium and tritium, are the primary fuel used in most nuclear fusion experiments due to their relatively low ignition temperature and high energy output.

Deuterium-Deuterium (D-D) fusion is considered to be the most promising for long-term energy production due to its abundance of fuel sources and the potential for higher energy output compared to Deuterium-Tritium (D-T) fusion.

The tokamak design offers several advantages for a nuclear fusion reactor, including high plasma confinement, continuous operation, and high power density, making it a leading candidate for future fusion power plants.

China is planning to build the world's first commercial fusion power plant, known as the China Fusion Engineering Test Reactor (CFETR), with the aim of demonstrating the feasibility of fusion energy for commercial electricity production.

The estimated timeline for the operation of the first commercial fusion power plant varies, but many experts believe that it could be operational by the 2040s, marking a significant milestone in the development of fusion energy.