NSTX-U

Among the top puzzles in the development of fusion energy is the best shape for the magnetic facility — or “bottle” — that will provide the next steps in the development of fusion reactors. Leading candidates include spherical tokamaks, compact machines that are shaped like cored apples, compared with the doughnut-like shape of conventional tokamaks.  The spherical design produces high-pressure plasmas — essential ingredients for fusion reactions — with relatively low and cost-effective magnetic fields.

The U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) has been named principal investigator for a multi-institutional project to study plasma-materials interaction (PMI) on the Experimental Advanced Superconducting Tokamak (EAST) in China. The centerpiece of the PPPL role in this project is the optimization of lithium delivery systems. The tests will be designed to optimize the production of long-pulse plasmas that last from 30 seconds to more than one minute.

Magnetic fusion energy and the plasma physics that underlies it are the topics of ambitious new books by Hutch Neilson, head of the Advanced Projects Department at PPPL, and Amitava Bhattacharjee, head of the Theory Department at the Laboratory. The books describe where research on magnetic fusion energy comes from and where it is going, and provide a basic understanding of the physics of plasma, the fourth state of matter that makes up 99 percent of the visible universe.

Steven Sabbagh and Jack Berkery, Columbia University physicists on assignment to the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), have received the 2016 Landau-Spitzer Award for outstanding contributions to plasma physics. Also sharing in the award are Holger Reimerdes of the École Polytechnique Fédérale de Lausanne in Switzerland and Yueqiang Liu of the Culham Centre for Fusion Energy in the United Kingdom. The award is named for Russian physicist Lev Landau, a 1962 Nobel laureate, and Princeton astrophysicist Lyman Spitzer, founder of PPPL.