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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

COLLOQUIUM: In Pursuit of Ignition on the National Ignition Facility

The Inertial Confinement Fusion (ICF) Program is conducting experiments at the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory with the goal of igniting a propagating thermonuclear burn wave in DT fuel leading to energy gain (defined as fusion yield/input laser energy >1). To do this the NIF laser delivers up to ~ 2 MJ of energy to a hohlraum (cylindrical cavity) which generates x-rays that implode a ~2 mm diameter spherical capsule filled with a solid layer of cryogenic deuterium-tritium (DT) fuel.

Two PPPL-led teams win increased supercomputing time to study conditions inside fusion plasmas

Researchers led by scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have won highly competitive allocations of time on two of the world’s fastest supercomputers. The increased awards are designed to advance the development of nuclear fusion as a clean and abundant source of energy for generating electricity.

Two PPPL-led teams win increased supercomputing time to study conditions inside fusion plasmas

Researchers led by scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have won highly competitive allocations of time on two of the world’s fastest supercomputers. The increased awards are designed to advance the development of nuclear fusion as a clean and abundant source of energy for generating electricity.

New imaging technique provides improved insight into controlling the plasma in fusion experiments

A key issue for the development of fusion energy to generate electricity is the ability to confine the superhot, charged plasma gas that fuels fusion reactions in magnetic devices called tokamaks. This gas is subject to instabilities that cause it to leak from the magnetic fields and halt fusion reactions.

New imaging technique provides improved insight into controlling the plasma in fusion experiments

 A key issue for the development of fusion energy to generate electricity is the ability to confine the superhot, charged plasma gas that fuels fusion reactions in magnetic devices called tokamaks. This gas is subject to instabilities that cause it to leak from the magnetic fields and halt fusion reactions.

COLLOQUIUM: Spitzer’s 100th: Founding PPPL & Pioneering Work in Fusion Energy

Lyman Spitzer, Jr. made major contributions in several fields of astrophysics, plasma physics, and fusion energy. He invented the novel stellarator concept for confining plasmas for fusion, and was an early proponent of putting telescopes in space. This talk will briefly review some of Spitzer's pioneering contributions in fusion, including a pictorial history from his founding of PPPL to TFTR's achievement of 10 megawatts of fusion power. Prof. Kulsrud will provide some personal stories about his early days of working with Spitzer.

Multinational achievement: PPPL collaborates on record fusion plasma in tokamak in China

A multinational team led by Chinese researchers in collaboration with U.S. and European partners has successfully demonstrated a novel technique for suppressing instabilities that can cut short the life of controlled fusion reactions. The team, headed by researchers at the Institute of Plasma Physics in the Chinese Academy of Sciences (ASIPP), combined the new technique with a method that the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) has developed for protecting the walls that surround the hot, charged plasma gas that fuels fusion reactions.

COLLOQUIUM: The Lithium Tokamak eXperiment (LTX)

The Lithium Tokamak eXperiment (LTX) will be discussed in the context of a more general program goal - to develop a compact realization of a tokamak fusion reactor. The general requirements for more compact tokamak reactors will be briefly discussed. The LTX project can investigate some, but not all, of these requirements, on a small scale. Recent results from LTX will be presented. Finally, the development of a toroidal system to test flowing liquid lithium walls, aimed at eventual implementation in a compact D-T tokamak, will be discussed.

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