Fusion energy record suggests we really could build artificial suns

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Nuclear fusion could provide a continuous source of low carbon energy if we ever get it to work, and a record-breaking attempt suggests we are one step closer

The new record is significant as it indicates commercial fusion power could become a reality. While 5 seconds might not sound like long, it is the maximum JET’s copper magnets can manage. Naulin says the duration and output shows that our understanding of plasma physics is settled. The achievement suggestsThose aims are to generate more power than is put in, the long-awaited goal of fusion power, and to do so for a sustained period of time, about 50 minutes initially.

”The big technology change that enabled the new record was a shift away from carbon-based materials in the wall of JET, such as graphite, which act as a sponge for the hydrogen isotopes used to create the plasma. Instead, metals such as tungsten and beryllium were used in the wall, similar to those that will be used for ITER., which had been delayed by around a year due to the pandemic.

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