The axial symmetry of tokamaks benefits plasma confinement but hinders control. Experiments have now proven that optimized non-axisymmetric magnetic fields can provide much improved control without degrading the plasma confinement.
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Boozer, A.H. Enhanced control. Nature Phys 14, 1157–1158 (2018). https://doi.org/10.1038/s41567-018-0281-y
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DOI: https://doi.org/10.1038/s41567-018-0281-y
