The EU and France pledged to contribute with 50% of the cost, while the other six parties agreed to each contribute around 10 per cent. It is noteworthy, that ITER continues the design of smaller experimental reactors where physicists already managed to produce temperatures needed for fusion. Nuclear fuel remains inside a reactor with a ring, called a tokamak. Magnets that are combined to generate surround a field in spiral that maintains the plasma supercaliente in place. To achieve its magnetic cage, ITER will use an alloy of niobium superconductor cables, which are cooled with liquid helium.
Outside the magnetic cage, a vacuum isolates the confined plasma from the inner wall of the reactor. Stephen Battersby, question thereon, why not are overflowing our electricity networks with energy obtained by nuclear fusion? While the concept of fusion is simple, put it into practice is tremendously difficult. And this is because the atomic nuclei are elusive: each has positive electrical charge and repel among themselves. Only at temperatures incredibly high gain enough energy to overcome their mutual aversion and merged. That is exactly what happens in the Sun. There, the heat is generated by the fusion of hydrogen nuclei. But the fuel barely melts at 15 million degrees, the temperature prevailing in the core of the Sun.
Burns so slowly that last billions of years. In a fusion plant, the fuel has to burn on human time scales. The heavier isotopes deuterium and tritium are easier to burn than hydrogen, but even so to get the effect within the ITER will require 15 million degrees. And that presents a mountain of engineering problems, among which contain the plasma of electrons and atomic nuclei to one ten times greater than the Sun’s temperature is not minor. Even the most resistant materials cannot withstand temperatures of more than thousands of degrees, so the solution is to isolate a receptacle for the plasma’s magnetic fields.