China launches fusion 'artificial sun' for the first time
China has used its fusion reactor for the first time, taking a step forward in developing technologies that will become a powerful and limitless source of clean energy. CNN.
The HL-2M Tokamak reactor in Chengdu, Sichuan province, is designed to use a powerful magnetic field to melt hot plasma at 150 million degrees Celsius - more than 10 times hotter than the core of the Sun.
The reactor, which is called the "artificial sun" because of the enormous amount of heat and energy it produces, was completed last year.
Chinese scientists have been working on a scaled-down version of the technology since 2006 in experiments designed to lay the groundwork for future large-scale power generation.
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The new reactor will also provide technical support for the International Thermonuclear Experimental Reactor (ITER), the world's largest reactor, which is being built in Marseille, France, state media reported. China is one of six countries participating in the project.
Scientists have been working on nuclear fusion for decades, which some regard as a major advance in energy production. Reactors are designed to mimic the physics of stars by fusing atomic nuclei, releasing enormous amounts of energy that can be controlled and eventually converted into electricity.
Unlike nuclear fission, which is used in nuclear power plants, fusion creates little radioactive waste and carries less risk of environmental disaster.
But merging is extremely difficult and expensive. Estimates of the total costs of building and operating the ITER range from $ 22 billion to $ 65 billion, making it one of the most expensive science projects in the world, and it will likely take decades before it becomes a viable means of generating electricity.
In early December, the UK announced its own move towards a fusion power plant, starting to search for a site to install.
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The government hopes the construction of a spherical tokamak for power generation (STEP), which will be connected to the grid, will be completed by 2040.
Professor Ian Chapman, chief executive of the UK Atomic Energy Authority, said "the plans will prove that fusion is not a distant dream but an emerging reality."
“STEP is about moving from research and development to delivery,” he added.
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