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Tokamaks

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A nuclear fusion reactor in which a magnetic field keeps charged, hot plasma moving in a doughnut-shaped vacuum container.

William Tang wins 2018 Global Impact Award to advance development of AI software to help create “a star on earth”

Physicist William Tang has won a highly competitive $100,000 Global Impact Award from NVIDIA Corp., the leading producer of graphics processing units (GPUs) for carrying out artificial intelligence (AI) computing.  This award was one of two presented at the NVIDIA national GPU technology conference held March 26-29 in San Jose, California.

Chirping is welcome in birds but not in fusion devices – scientists show that weak turbulence makes chirping more likely

Birds do it and so do doughnut-shaped fusion facilities called “tokamaks.” But tokamak chirping— a rapidly changing frequency wave that can be far above what the human ear can detect — is hardly welcome to researchers who seek to bring the fusion that powers the sun and stars to Earth.  Such chirping signals a loss of heat that can slow fusion reactions, a loss that has long puzzled scientists.

Chirping is welcome in birds but not in fusion devices – scientists show that weak turbulence makes chirping more likely

Birds do it and so do doughnut-shaped fusion facilities called “tokamaks.” But tokamak chirping— a rapidly changing frequency wave that can be far above what the human ear can detect — is hardly welcome to researchers who seek to bring the fusion that powers the sun and stars to Earth.  Such chirping signals a loss of heat that can slow fusion reactions, a loss that has long puzzled scientists.

Drifting and bouncing particles can help maintain stability in fusion plasmas

A key challenge in fusion research is maintaining the stability of the hot, charged plasma that fuels fusion reactions inside doughnut-shaped facilities called “tokamaks.” Physicists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), have recently found that drifting particles in the plasma, which consists of free electrons and atomic nuclei, can forestall instabilities that reduce the pressure crucial to high-performance fusion reactions inside these facilities.

Drifting and bouncing particles can help maintain stability in fusion plasmas

A key challenge in fusion research is maintaining the stability of the hot, charged plasma that fuels fusion reactions inside doughnut-shaped facilities called “tokamaks.” Physicists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), have recently found that drifting particles in the plasma, which consists of free electrons and atomic nuclei, can forestall instabilities that reduce the pressure crucial to high-performance fusion reactions inside these facilities.

Fusion breakthroughs among highlights of the Department of Energy’s research milestones during the past 40 years

The U.S. Department of Energy’s (DOE) Office of Science, the largest U.S. supporter of basic research in the physical sciences, celebrated the 40th anniversary of its founding in 2017.  To mark the 40th anniversary of Office of Science support for the country’s national laboratories and basic research at universities and private industry, the DOE has compiled 40 milestone papers that represent what the Department calls “a cream-of-the crop selection that has changed the face of science.”

Fusion breakthroughs among highlights of the Department of Energy’s research milestones during the past 40 years

The U.S. Department of Energy’s (DOE) Office of Science, the largest U.S. supporter of basic research in the physical sciences, celebrated the 40th anniversary of its founding in 2017.  To mark the 40th anniversary of Office of Science support for the country’s national laboratories and basic research at universities and private industry, the DOE has compiled 40 milestone papers that represent what the Department calls “a cream-of-the crop selection that has changed the face of science.”

The mysteries of plasma and solar eruptions earn PPPL graduate an astrophysics prize

Clayton Myers, a 2015 graduate of the Program in Plasma Physics in the Princeton Department of Astrophysical Sciences who did his research at the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL), has won the 2018 Dissertation Prize awarded by the Laboratory Astrophysics Division (LAD) of the American Astronomical Society (AAS). Myers, now a physicist at Sandia National Laboratory, received the award for his work on the Magnetic Reconnection Experiment (MRX) at PPPL.

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