PPPL scientists boost plasma performance with WEST

September 9, 2022, 9:30AMNuclear News
The vacuum vessel of the WEST. (Photo: CEA)

Research by scientists at the Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) and collaborating institutions has the potential to improve plasma performance in tokamak nuclear fusion reactors, according to a recent paper in Nuclear Fusion. The research focused on the use of a PPPL-developed dropper to apply coatings of boron powder to the tungsten components inside a tokamak, thereby helping protect the tungsten against the intensely hot plasma. According to lead author Grant Bodner, this process offers “a way to deposit boron coatings without turning off the tokamaks’ magnetic field.”

EPFL researchers update fusion’s “Greenwald limit”

June 7, 2022, 3:00PMANS Nuclear Cafe

A newly released study led by physicist Paolo Ricci has revised a fundamental, foundational law of plasma generation and nuclear fusion by showing that more hydrogen fuel can safely be used in fusion reactors, thereby generating more energy than previously thought possible. Ricci, of the Swiss Plasma Center at the Swiss Federal Institute of Technology in Lausanne (EPFL), explains that his team’s results indicate that tokamaks, such as the international collaborative project ITER, could use almost twice the amount of hydrogen fuel in their plasmas without the danger of disruption, or loss of confinement of the plasma.

The research team’s findings amend one of the long-time limitations (the so-called Greenwald limit) in generating and sustaining the high-temperature plasma needed to produce fusion energy.

White House and DOE launch “bold decadal vision” for fusion energy

March 22, 2022, 9:30AMNuclear News
A panel on the status and benefits of fusion technology featured, from left, Kimberly Budil (moderator), of Lawrence Livermore National Laboratory; Kathy McCarthy, of Oak Ridge National Laboratory; Abdalla Darwish, of Dillard University; Anne White, of the Massachusetts Institute of Technology; Steven Cowley, of Princeton Plasma Physics Laboratory; and Mark Berry, of Southern Company.

The White House Office of Science and Technology Policy and the Department of Energy cohosted the White House Summit on Developing a Bold Decadal Vision for Commercial Fusion Energy on March 17. The livestreamed event brought together fusion leaders from government, industry, academia, and other stakeholder groups to showcase recent achievements in fusion research and discuss the administration’s strategy to support the development of commercial fusion energy. Energy Secretary Jennifer Granholm’s announcement of a new agency-wide fusion energy initiative and a funding opportunity worth $50 million for magnetic confinement fusion research made March 17 a lucky day indeed for the U.S. fusion energy community.

Research confirms ingredient in household cleaner could improve fusion reactions

April 5, 2021, 12:00PMANS Nuclear Cafe
Photos of physicist Alessandro Bortolon and the element boron; graph and photo showing the interior of a tokamak. Credit: Alexander Nagy and Alessandro Bortolon/Collage courtesy of Elle Starkman, PPPL

Research led by scientists at the Department of Energy's Princeton Plasma Physics Laboratory (PPPL) provides new evidence that particles of boron, the main ingredient in Borax household cleaner, can coat internal components of doughnut-shaped plasma devices known as tokamaks and improve the efficiency of the fusion reactions, according to an article published on Phys.org on April 2.