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Fusion energy

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The energy released when two atomic nuclei fuse together. This process powers the sun and stars.  Read more

Steven Sabbagh leads study to predict and avoid disruptions on KSTAR plasmas

Steven Sabbagh, a senior research scientist at Columbia University on long-term assignment to the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), has been named lead principal investigator for a multi-institutional project on the Korea Superconducting Tokamak Advanced Research (KSTAR) facility. The three-year, $3.3 million collaboration will study methods of predicting and avoiding disruptions on KSTAR, a long-pulse tokamak that produces plasmas that can last from 30 seconds to a design value of more than five minutes.

Steven Sabbagh leads study to predict and avoid disruptions on KSTAR plasmas

Steven Sabbagh, a senior research scientist at Columbia University on long-term assignment to the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), has been named lead principal investigator for a multi-institutional project on the Korea Superconducting Tokamak Advanced Research (KSTAR) facility. The three-year, $3.3 million collaboration will study methods of predicting and avoiding disruptions on KSTAR, a long-pulse tokamak that produces plasmas that can last from 30 seconds to a design value of more than five minutes.

PPPL researchers successfully test new device that analyzes the surfaces of tokamak components within a vacuum

Physicists at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have successfully tested a new device that will lead to a better understanding of the interactions between ultrahot plasma contained within fusion facilities and the materials inside those facilities. The measurement tool, known as the Materials Analysis Particle Probe (MAPP), was built by a consortium that includes Princeton University and the University of Illinois at Urbana-Champaign (U. of I.). 

PPPL researchers successfully test new device that analyzes the surfaces of tokamak components within a vacuum

Physicists at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have successfully tested a new device that will lead to a better understanding of the interactions between ultrahot plasma contained within fusion facilities and the materials inside those facilities. The measurement tool, known as the Materials Analysis Particle Probe (MAPP), was built by a consortium that includes Princeton University and the University of Illinois at Urbana-Champaign (U. of I.).

Major next steps proposed for development of fusion energy based on the spherical tokamak design

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.

PPPL and Princeton help lead a new center to understand and mitigate runaway electrons that pose a challenge for ITER

Runaway electrons, a searing, laser-like beam of electric current released by plasma disruptions, could damage the interior walls of future tokamaks the size of ITER, the international fusion experiment under construction in France. To help overcome this challenge, leading experts in the field have launched a multi-institutional center to find ways to prevent or mitigate such events.

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