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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

PPPL scientists help test innovative device to improve efficiency of tokamaks

Scientists at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) have helped design and test a component that could improve the performance of doughnut-shaped fusion facilities known as tokamaks. Called a "liquid lithium limiter," the device has circulated the protective liquid metal within the walls of China's Experimental Advanced Superconducting Tokamak (EAST) and kept the plasma from cooling down and halting fusion reactions. The journal Nuclear Fusion published results of the experiment in March 2016. The research was supported by the DOE Office of Science.

PPPL scientists help test innovative device to improve efficiency of tokamaks

Scientists at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) have helped design and test a component that could improve the performance of doughnut-shaped fusion facilities known as tokamaks. Called a "liquid lithium limiter," the device has circulated the protective liquid metal within the walls of China's Experimental Advanced Superconducting Tokamak (EAST) and kept the plasma from cooling down and halting fusion reactions. The journal Nuclear Fusion published results of the experiment in March 2016. The research was supported by the DOE Office of Science.

Physicist Tyler Abrams models lithium erosion in tokamaks

The world of fusion energy is a world of extremes. For instance, the center of the ultrahot plasma contained within the walls of doughnut-shaped fusion machines known as tokamaks can reach temperatures well above the 15 million degrees Celsius core of the sun. And even though the portion of the plasma closer to the tokamak's inner walls is 10 to 20 times cooler, it still has enough energy to erode the layer of liquid lithium that may be used to coat components that face the plasma in future tokamaks.

DOE’s Ed Synakowski traces key discoveries in the quest for fusion energy

The path to creating sustainable fusion energy as a clean, abundant and affordable source of electric energy has been filled with “aha moments” that have led to a point in history when the international fusion experiment, ITER, is poised to produce more fusion energy than it uses when it is completed in 15 to 20 years, said Ed Synakowski, associate director of Science for Fusion Energy Sciences at the U.S. Department of Energy (DOE). 

DOE’s Ed Synakowski traces key discoveries in the quest for fusion energy

The path to creating sustainable fusion energy as a clean, abundant and affordable source of electric energy has been filled with “aha moments” that have led to a point in history when the international fusion experiment, ITER, is poised to produce more fusion energy than it uses when it is completed in 15 to 20 years, said Ed Synakowski, associate director of Science for Fusion Energy Sciences at the U.S. Department of Energy (DOE).

PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine

The electric current that powers fusion experiments requires superb control. Without it, the magnetic coils the current drives cannot contain and shape the plasma that fuels experiments in doughnut-shaped tokamaks correctly.

PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine

The electric current that powers fusion experiments requires superb control. Without it, the magnetic coils the current drives cannot contain and shape the plasma that fuels experiments in doughnut-shaped tokamaks correctly.

PPPL graduate students help create Princeton University Art Museum exhibition exploring art and physics

When you think of a physicist, what comes to mind? Perhaps a figure in a white lab coat tinkering with complex machinery. Or maybe a wild-haired theoretician scribbling equations on a chalkboard. And you might believe that the world of physics is entirely consumed with numbers and devices, with no connection to the non-scientific world. 

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