Press Releases Archive
The Princeton Plasma Physics Laboratory (PPPL) hosted its largest group of undergraduate students ever for the annual undergraduate plasma workshop June 10 to 14 with more than 60 physics and engineering students coming from as far away as South Dakota, Washington, and Puerto Rico for the intensive, one-week course in plasma physics.
The U.S. Department of Energy (DOE) has launched an ambitious new program to encourage private-pubic partnerships to speed the development on Earth of the fusion energy that powers the sun and most stars. The DOE’s Princeton Plasma Physics Laboratory (PPPL) and Oak Ridge National Laboratory, home of the US ITER Project Office, will manage the program, with PPPL physicist Ahmed Diallo serving as deputy director and Oak Ridge fusion engineer Dennis Youchison serving as director.
A key obstacle to controlling on Earth the fusion that powers the sun and stars is leakage of energy and particles from plasma, the hot, charged state of matter composed of free electrons and atomic nuclei that fuels fusion reactions. At the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), physicists have been focusing on validating computer simulations that forecast energy losses caused by turbulent transport during fusion experiments.
High-energy ion beams — laser-like beams of atomic particles fired through accelerators — have applications that range from inertial confinement fusion to the production of superhot extreme states of matter that are thought to exist in the core of giant planets like Jupiter and that researchers are eager to study. These positively charged ion beams must be neutralized by negatively charged electrons to keep them sharply focused. However, researchers have found many obstacles to the neutralization process.
Institutions ranging from NASA to the Korean Physical Society have recently bestowed national and international honors on four scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL). The awards recognize a veteran and three early career physicists for their path-setting achievements in fusion and plasma science research. The honorees and their notable contributions:
Rajesh Maingi named Fellow of the American Nuclear Society
Machine learning (ML), a form of artificial intelligence that recognizes faces, understands language and navigates self-driving cars, can help bring to Earth the clean fusion energy that lights the sun and stars. Researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) are using ML to create a model for rapid control of plasma — the state of matter composed of free electrons and atomic nuclei, or ions — that fuels fusion reactions.
Scientists have created a novel method for measuring the stability of a soup of ultra-hot and electrically charged atomic particles, or plasma, in fusion facilities called “tokamaks.” Involving an innovative use of a mathematical tool, the method might lead to a technique for stabilizing plasma and making fusion reactions more efficient.
Lithium, the light silvery metal used in everything from pharmaceutical applications to batteries that power your smart phone or electric car, could also help harness on Earth the fusion energy that lights the sun and stars. Lithium can maintain the heat and protect the walls inside doughnut-shaped tokamaks that house fusion reactions, and will be used to produce tritium, the hydrogen isotope that will combine with its cousin deuterium to fuel fusion in future reactors.
Artificial intelligence (AI), a branch of computer science that is transforming scientific inquiry and industry, could now speed the development of safe, clean and virtually limitless fusion energy for generating electricity. A major step in this direction is under way at the U.S.
Physicists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have discovered valuable information about how electrically charged gas known as “plasma” flows at the edge inside doughnut-shaped fusion devices called “tokamaks.” The findings mark an encouraging sign for the development of machines to produce fusion energy for generating electricity without creating long-term hazardous waste.
To capture and control on Earth the fusion reactions that drive the sun and stars, researchers must first turn room-temperature gas into the hot, charged plasma that fuels the reactions. At the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), scientists have conducted an analysis that confirms the effectiveness of a novel, non-standard way for starting up plasma in future compact fusion facilities.
Jon Menard, the head of research on the National Spherical Torus Experiment-Upgrade (NSTX-U) at the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL), has been named the new PPPL deputy director for research. He replaces Michael Zarnstorff, the deputy director for the past decade, who becomes the chief scientist at PPPL, a position that will oversee strategic scientific planning.
The number of female engineers at the Princeton Plasma Physics Laboratory (PPPL) has increased over the years but women engineers say they are still often the only one females in the room. Now they are trying to change that.
Female engineers at PPPL have formed a Women in Engineering group aimed at recruiting more female engineers, supporting outreach efforts to inspire girls and young women to consider STEM careers and perhaps most importantly, providing support to each other.
Some 750 girls will operate robots, use goggles to get a 3-D view of the brain, learn about computer coding and talk to FBI forensics investigators at the Princeton Plasma Physics Laboratory’s Young Women’s Conference in Science, Technology, Engineering and Mathematics (STEM) on Friday, March 22, at the Frick Chemistry Laboratory on the Princeton University campus.
Can tokamak fusion facilities, the most widely used devices for harvesting on Earth the fusion reactions that power the sun and stars, be developed more quickly to produce safe, clean, and virtually limitless energy for generating electricity? Physicist Jon Menard of the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) has examined that question in a detailed look at the concept of a compact tokamak equipped with high temperature superconducting (HTS) magnets.
The U.S. Department of Energy announced March 15 that Princeton University will continue to manage and operate the DOE’s Princeton Plasma Physics Laboratory, located on Princeton University’s Forrestal Campus in Plainsboro, New Jersey. The extended contract, which runs through March 31, 2022, also highlights collaborations among the University, the lab and the DOE.
Princeton Plasma Physics Laboratory physicist Sam Cohen will receive funding from a U.S. Department of Energy (DOE) award to his collaborator to upgrade and operate his Princeton Field Reversed Configuration device, the PFRC-2. The data produced could allow the design of future devices that might one day be used as a portable generator.
Cohen will receive $700,000 from a $1.25 million award from the Advanced Research Projects Agency-Energy (ARPA-E) to Princeton Fusion Systems, which is working with Cohen on development of the device.
Whether zipping through a star or a fusion device on Earth, the electrically charged particles that make up the fourth state of matter better known as plasma are bound to magnetic field lines like beads on a string. Unfortunately for plasma physicists who study this phenomenon, the magnetic field lines often lack simple shapes that equations can easily model. Often they twist and knot like pretzels. Sometimes, when the lines become particularly twisted, they snap apart and join back together, ejecting blobs of plasma and tremendous amounts of energy.
The Ridge Team from Basking Ridge, New Jersey, will go to Washington, D.C., for the National Science Bowl® Finals after battling out a win against a previous champion, West Windsor-Plainsboro South, at the New Jersey Regional Science Bowl on Feb. 23 hosted by the Princeton Plasma Physics Laboratory (PPPL).
Fast magnetic reconnection, the rapid convergence, separation and explosive snapping together of magnetic field lines, gives rise to northern lights, solar flares and geomagnetic storms that can disrupt cell phone service and electric power grids. The phenomenon takes place in plasma, the state of matter composed of free electrons and atomic nuclei, or ions, that makes up 99 percent of the visible universe. But whether fast reconnection can occur in partially ionized plasma — plasma that includes atoms as well as free electrons and ions — is not well understood.
Stuart Hudson, acting head of the Princeton Plasma Physics Laboratory’s Theory Department, visited three national laboratories recently as one of 15 national laboratory leaders from a variety of backgrounds selected for the U.S. Department of Energy’s (DOE) Oppenheimer Science and Energy Leadership Program.
How have stars and planets developed from the clouds of dust and gas that once filled the cosmos? A novel experiment at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) has demonstrated the validity of a widespread theory known as “magnetorotational instability,” or MRI, that seeks to explain the formation of heavenly bodies.
Scientists seeking to capture and control on Earth fusion energy, the process that powers the sun and stars, face the risk of disruptions — sudden events that can halt fusion reactions and damage facilities called tokamaks that house them. Researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), and the University of Washington have developed a novel prototype for rapidly controlling disruptions before they can take full effect.
Want to create your own plasma? You can create and control a plasma from the comfort of your own device.
The Remote Glow Discharge Experiment (RGDX) at the Princeton Plasma Physics Laboratory (PPPL) allows you to turn on a plasma and change the gas pressure, the voltage, and the strength of the electromagnets surrounding it from wherever you are. From a web browser, you can control a plasma with a magnetic field, the same way scientists control a plasma in a tokamak, the magnetic devices that scientists use in fusion experiments.
Craig Ferguson, a leader with more than 25 years of experience at U.S. Department of Energy (DOE) laboratories and other federal facilities, will become deputy director for operations and chief operating officer at the Princeton Plasma Physics Laboratory (PPPL) after a nationwide search. He will begin on Feb. 4.
Sudden bursts of heat that can damage the inner walls of tokamak fusion experiments are a hurdle that operators of the facilities must overcome. Such bursts, called “edge localized modes (ELMs),” occur in doughnut-shaped tokamak devices that house the hot, charged plasma that is used to replicate on Earth the power that drives the sun and other stars. Now researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have directly observed a possible and previously unknown process that can trigger damaging ELMs.
Like surfers catching ocean waves, particles within the hot, electrically charged state of matter known as plasma can ride waves that oscillate through the plasma during experiments to investigate the production of fusion energy. The oscillations can displace the particles so far that they escape from the doughnut-shaped tokamak that houses the experiments, cooling the plasma and making fusion reactions less efficient. Now a team of physicists led by the U.S.
Down a hallway in the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), scientists study the workings of a machine in a room stuffed with wires and metal components. The researchers seek to explain the behavior of vast clouds of dust and other material that encircle stars and black holes and collapse to form planets and other celestial bodies.
From new insights into the control of nuclear fusion to improved understanding of the fabrication of material thousands of time thinner than a human hair, the U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) achieved wide-ranging advances in 2018. Research at the Laboratory focuses on the physics of plasma, the state of matter composed of free electrons and atomic nuclei that fuels the fusion reactions that light the sun and stars and underlies fundamental processes throughout the cosmos.
Scientists seeking to bring the fusion reaction that powers the sun and stars to Earth must keep the superhot plasma free from disruptions. Now researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have discovered a process that can help to control the disruptions thought to be most dangerous.
Princeton Plasma Physics Laboratory is a U.S. Department of Energy national laboratory managed by Princeton University.
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