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Plasma diagnostics

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The tools used by researchers to assess the characteristics of superheated and electrically charged gases known as plasmas.

Reaching new heights: Physicists improve the vertical stability of superconducting Korean fusion device

A major challenge facing the development of fusion energy is maintaining the ultra-hot plasma that fuels fusion reactions in a steady state, or sustainable, form using superconducting magnetic coils to avoid the tremendous power requirement of copper coils. While superconductors can allow a fusion reactor to operate indefinitely, controlling the plasma with superconductors presents a challenge because engineering constraints limit how quickly such magnetic coils can adjust when compared to copper coils that do not have the same constraints.

PPPL takes detailed look at 2-D structure of turbulence in tokamaks

A key hurdle for fusion researchers is understanding turbulence, the ripples and eddies that can cause the superhot plasma that fuels fusion reactions to leak heat and particles and keep fusion from taking place. Comprehending and reducing turbulence will facilitate the development of fusion as a safe, clean and abundant source of energy for generating electricity from power plants around the world.

PPPL takes detailed look at 2-D structure of turbulence in tokamaks

A key hurdle for fusion researchers is understanding turbulence, the ripples and eddies that can cause the superhot plasma that fuels fusion reactions to leak heat and particles and keep fusion from taking place. Comprehending and reducing turbulence will facilitate the development of fusion as a safe, clean and abundant source of energy for generating electricity from power plants around the world.

New model of plasma stability could help researchers predict and avoid disruptions in fusion machines

Physicists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have helped develop a new computer model of plasma stability in doughnut-shaped fusion machines known as tokamaks. The new model incorporates recent findings gathered from related research efforts and simplifies the physics involved so computers can process the program more quickly. The model could help scientists predict when a plasma might become unstable and then avoid the underlying conditions. 

Top 10 PPPL stories that you shouldn’t miss

The past year saw many firsts in experimental and theoretical research at the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL). Here, in no particular order, are 10 of the Laboratory’s top findings in 2016, from the first results on the National Spherical Torus Experiment-Upgrade to a new use for Einstein’s theory of special relativity to modeling the disk that feeds the supermassive black hole at the center of our galaxy.

1. First results of the National Spherical Torus Experiment-Upgrade (NSTX-U)

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