![]() However, research into reducing these requirements – notably through the use of superconducting magnets – is underway. Today’s tokamaks have high auxiliary power requirements to run the heating systems and energise the magnetic coils. During this experiment, JET averaged a fusion power of around 11 megawatts. JET has produced a record-breaking 59 megajoules of sustained fusion energy over a five second period (the duration of the fusion experiment) using deuterium and tritium – the same fuel mix that will be used in future powerplants. ![]() Researchers have overcome many of the scientific hurdles in fusion – developing a good understanding of how to control and confine the hot plasma of fuels. ![]() CCFE’s goal is to develop fusion reactors using the tokamak concept. The most advanced device for this is the ‘tokamak’, a Russian word for a ring-shaped magnetic chamber. One way to control the intensely hot plasma is to use powerful magnets. A plasma with millions of these reactions every second can provide a huge amount of energy from very small amounts of fuel. ![]() The gas becomes a plasma and the nuclei combine to form a helium nucleus and a neutron, with a tiny fraction of the mass converted into ‘fusion’ energy. To produce energy from fusion here on Earth, a combination of hydrogen gases – deuterium and tritium – are heated to very high temperatures (over 100 million degrees Celsius). This is the opposite of nuclear fission – the reaction that is used in nuclear power stations today – in which energy is released when a nucleus splits apart to form smaller nuclei. When light nuclei fuse to form a heavier nucleus, they release bursts of energy. Fusion is the process that takes place in the heart of stars and provides the power that drives the universe. ![]()
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