This Breakthrough Could Fix the Fatal Flaw in Fusion Reactors
A new supercomputer model could help scientists reach nuclear fusion energy. Tokamak reactors are plagued by electromagnetic blobs that constrict or cool plasma. A full simulation lets scientists safely analyze the risk factors and potential solutions. In the long road to nuclear fusion, scientists continue to confront one of the more prominent (and literal) bumps: edge localized modes (ELMs). These blobs form at the edge of a tokamak’s plasma swirl, caused by the interaction of the powerful, containing magnetic field and the sun-hot plasma. In the past, scientists have volunteered several solutions, including pulsating radio waves. But now, researchers from the Max-Planck-Institut für Plasmaphysik (IPP) in Germany have what they say is the first simulation of how ELMs form—making it easier to model the risks and the potential solutions. “After extensive previous work, it has now been possible for the first time by means of computational simulations to identify the trigger responsibl