Stochasticity in fusion plasmas

摘要

To date, the most advanced concepts for fusion confinement are the tokamak and the stellarator. The stellarator is exemplified by the Wendelstein 7-X (W7-X) stellarator, which started recently operation in December 2015 in Greifswald, Germany. The tokamak scheme is currently the leading variant for plasma confinement and is therefore being used for the ITER design and is planned for the DEMO reactor. However, reliably achieving and maintaining the stability of fusion plasmas remains an important fundamental issue that needs to be resolved.