Credit: Elle Starkman/PPPL; Lisa Petrillo/GA for Carlos Paz-Soldan and Raffi Nazikian
From top left: 1.Magnetic island geometry revealing the mechanism for the density limit. (Reprinted with permission from Phys. Plasmas 22, 022514 2015); 2.Carlos Paz-Soldan and Raffi Nazikian advanced understanding of the control of heat bursts; 3.interior of the NSTX-U showing the completed center stack; 4.W7-X stellarator in Greifswald, Germany; 5.solar flare at the peak of the cycle in October, 2014, with no observed eruptions. Background: umbrella view of the interior of the NSTX-U.