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The study of plasma, a partially-ionized gas that is electrically conductive and able to be confined within a magnetic field, and how it releases energy.

PPPL honors Grierson and Greenough for distinguished research and engineering achievements

A breakthrough in the development of fusion diagnostics and the creative use of radio frequency waves to heat the plasma that fuels fusion reactions earned the 2017 outstanding research and engineering awards from the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL). Physicist Brian Grierson and engineer Nevell Greenough received the honors from PPPL Interim Director Richard Hawryluk at a ceremony November 7 for their exceptional achievements.

PPPL honors Grierson and Greenough for distinguished research and engineering achievements

A breakthrough in the development of fusion diagnostics and the creative use of radio frequency waves to heat the plasma that fuels fusion reactions earned the 2017 outstanding research and engineering awards from the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL). Physicist Brian Grierson and engineer Nevell Greenough received the honors from PPPL Interim Director Richard Hawryluk at a ceremony November 7 for their exceptional achievements.

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.

The blob that ate the tokamak: Physicists gain understanding of how bubbles at the edge of plasmas can drain heat and reduce fusion reaction efficiency

To fuse hydrogen atoms into helium, doughnut-shaped devices called tokamaks must maintain the heat of the ultrahot plasma they control. But like boiling water, plasma has blobs, or bubbles, that percolate within the plasma edge, reducing the performance of the plasma by taking away heat that sustains the fusion reactions.

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