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ITER fusion reactor to see further delays, with operations pushed to 2034
Full fusion power won't happen until nearly 2040 on new timeline.
One of them is the product of the international nature of the collaboration, which sees individual components built by different partner organizations before assembly at the reactor site in France. This would necessitate an extended shutdown after initial experiments before the reactor could be used at progressively higher energies, using more potent deuterium and deuterium/tritium plasmas. In the previous schedule, the low-energy, hydrogen-only plasmas would have started testing in 2025, a target date that the delays have made completely unrealistic.
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