“Dropping boron into a tokamak while it is operating is like cleaning your apartment while doing all the other things that you usually do in it,” said CEA scientist Alberto Gallo, who contributed to the research
that have parts made of a heat-resistant material known as tungsten.
said, “We need a way to deposit boron coatings without turning off the tokamaks’ magnetic field, and that’s what the powder dropper allows us to do.” Fusion, the power that drives the sun and stars, combines light elements in the form of plasma – the hot, charged state of matter composed of free electrons and atomic nuclei – that generates massive amounts of energy. Scientists are seeking to replicate fusion on Earth for a virtually inexhaustible supply of power to generate electricity.
The researchers were surprised to find that the boron laid down by the dropper did more than condition the inner tungsten surfaces. “We saw that when we dropped in the powder, the plasma confinement increased, meaning that it retains more of its heat, which aids the fusion process,” Bodner said.
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