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PPL researchers demonstrate first hot plasma edge in a fusion facility

Two major issues confronting magnetic-confinement fusion energy are enabling the walls of devices that house fusion reactions to survive bombardment by energetic particles, and improving confinement of the plasma required for the reactions. At the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), researchers have found that coating tokamak walls with lithium— a light, silvery metal— can lead to progress on both fronts.

U.S.-China collaboration makes excellent start in optimizing lithium to control fusion plasmas

China has the Experimental Advanced Superconducting Tokamak (EAST) facility, a steady-state capable superconducting tokamak with many auxiliary systems being developed to qualify reactor-relevant technology.  As such, EAST is well-suited to address gaps in the physics basis for steady-state operation, plasma control, and plasma-material interfaces. Continued collaborations with EAST (ongoing since the start of the EAST project) enables U.S.

PPPL-led team wins major award of time on DOE supercomputers for fusion studies in 2017

A nationwide team of researchers led by physicist C.S. Chang of the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) has won the use of 269.9 million supercomputer hours to complete an extreme-scale study of the complex edge region of fusion plasmas. The award was made by the DOE’s ASCR Leadership Computing Challenge (ALCC) program for 2017, supported by DOE’s Office of Science.

Scientists at PPPL further understanding of a process that causes heat loss in fusion devices

Everyone knows that the game of billiards involves balls careening off the sides of a pool table — but few people may know that the same principle applies to fusion reactions. How charged particles like electrons and atomic nuclei that make up plasma interact with the walls of doughnut-shaped devices known as tokamaks helps determine how efficiently fusion reactions occur. Specifically, in a phenomenon known as secondary electron emission (SEE), electrons strike the surface of the wall, causing other electrons to be emitted.

Valeria Riccardo

Valeria Riccardo is PPPL’s head of engineering, the largest department at PPPL. She worked for more than 20 years at the Culham Centre for Fusion Energy in Oxfordshire, England, which operates the Joint European Torus (JET) and the Mega Amp Spherical Tokamak (MAST) facility, a sister facility to PPPL. As chief engineer at the Culham Center for ve years, she was responsible for ensuring that the consequences of any design, installation and operation decision were understood.

U.S. Department of Energy
Princeton Plasma Physics Laboratory is a U.S. Department of Energy national laboratory managed by Princeton University.

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