Gamingdeputy news on February 8,European Combined Ring Reactor(Joint European Torus, JET) is a magnetically confined plasma physics experimental reactor located at the Culham Nuclear Fusion Center in Oxfordshire, UK. It is a joint venture between many European countries; and the International Thermonuclear Experimental Reactor (ITER) was built at JET. On top of research.
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Mikhail Maslov of the British Atomic Energy Agency said at a press conference today that the 40-year-old nuclear fusion reactor has completed its last experiment (actually on December 18, 2023) and successfully completed its lifetime. Setting a new world record for energy output during its final leg, JET has now been permanently shut down.
“This is the final milestone in JET's 40-year history,” UKAEA chief executive Professor Sir Ian Chapman said of JET's final experiment. “For decades, dedicated teams of scientists and engineers have used JET to carry out 's research has played a key role in accelerating the development of fusion energy.”
It is said that JET will also be reused to continue to help mankind after decommissioning. This phase is expected to last until around 2040. For example, some agencies may reuse it for fusion or other applications.
Professor Chapman also mentioned, “We have a huge opportunity to repurpose this potentially billion-dollar asset. For the first time, we will complete the decommissioning process of a deuterium and tritium machine in a sustainable way, which will prove The sustainability of fusion is also a necessary condition to bring it to market.”
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Designed to be larger than similar facilities, JET was created to achieve a scientific break-even point of fusion energy gain factor Q = 1.0, and it currently holds the world record for fusion energy gain factor (Q-value) (Q =0.67), it is also the first reactor to successfully operate deuterium-tritium DT fusion.
When it became operational in 1983, it was the hottest thing in the solar system at the time (150 million degrees Celsius), and spent much of the next decade improving its performance through a series of experiments and upgrades. With the first experiments involving tritium in 1991, JET became the first reactor in the world to operate on production fuel, a 50:50 mixture of tritium and deuterium.
On December 21, 2021, JET will use deuterium-tritium fuel to generate 59 MJ of heat during a 5-second pulse, surpassing the previous record of 21.7 MJ set in 1997 (Q = 0.33).
In its final test in late 2023, JET will use 0.2 mg of fuel,It achieves an output power of 69 MJ with a response time of 5.2 seconds.. Mikhail Maslov of the UK Atomic Energy Agency said this was equivalent to an electricity output of 12.5 megawatts, enough to power 12,000 homes.