Press Releases Archive
An obstacle to generating fusion reactions inside facilities called tokamaks is that producing the current in plasma that helps create confining magnetic fields happens in pulses. Such pulses, generated by an electromagnet that runs down the center of the tokamak, would make the steady-state creation of fusion energy difficult to achieve. To address the problem, physicists have developed a technique known as transient coaxial helicity injection (CHI) to create a current that is not pulsed.
More than 155 researchers and students — the largest delegation from the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) in recent years — attended the 61st annual meeting of the American Physical Society Division of Plasma Physics (APS-DPP) in Fort Lauderdale, Florida.
Janardhan (Manny) Manickam, a physicist at the U.S. Department of Energy’s Princeton Plasma Physics Laboratory for 36 years who was head of the Theory Division and collaborated on physics experiments around the world, died on Oct. 18. He was 73.
Discoveries about the behavior of plasma that fuels fusion reactions and composes the sun and stars have won prestigious awards for two post-doctoral fellows at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL). The honors, the 2019 Christiaan Huygens Science Award for physicist Chris Smiet and the 2019 Under 30 Scientist and Student Award for physicist Rupak Mukherjee, recognize exceptional contributions by the two scientists at the start of their careers.
The swirls created by milk poured into coffee or the shudders that can jolt airplanes in flight are examples of turbulence, the chaotic movement of matter found throughout nature. Turbulence also occurs within tokamaks, doughnut-shaped facilities that house the plasma that fuels fusion reactions. Now, scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have discovered that turbulence may play an increased role in affecting the self-driven, or bootstrap, current in plasma that is necessary for tokamak fusion reactions.
Turbulence, the swirling eddies and currents that jostle fluids and air, is traditionally seen as disruptive of efforts to capture and control on Earth the fusion energy that powers the sun and stars. Now a discovery by scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) and General Atomics has found that enhanced turbulence in the edge of the plasma may actually improve the thermal insulation required to achieve fusion energy.
State-of-the-art computer codes and world-class expertise at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) will provide four of the first 12 collaborations under the newly created Innovation Network for Fusion Energy (INFUSE) program. The public-private partnerships, funded by the DOE Office of Science, are intended to speed the development on Earth of the fusion energy that powers the sun and stars.
The new Princeton University supercomputer, Traverse, enhances research at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics (PPPL) to develop the science to bring the fusion that powers the sun and stars to Earth. Princeton officially launched the supercomputer Sept. 30 in a ribbon-cutting ceremony in the High-Performance Computing Research Center on the Forrestal campus.
How do you start a fusion reaction, the process that lights the sun and stars, on Earth? Like lighting a match to start a fire, you first produce plasma, the state of matter composed of free electrons and atomic nuclei that fuels fusion reactions, and raise it to temperatures rivaling the sun in hundreds of milliseconds.
Stefan Gerhardt, who heads research operations and serves as deputy director of the recovery project for the flagship fusion facility at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), has been elected a 2019 American Physical Society (APS) Fellow. The APS annually recognizes as fellows no more than one-half of one percent of its more than 55,000 worldwide members.
As a first-generation college student, Barbara Garcia had to figure out a lot of things on her own when applying for college. Her parents were Mexican immigrants who didn’t go to college and couldn’t help her navigate the application process, couldn’t help her study for the SATs or look over her application essays.
“Being a first-generation college student has influenced me by teaching me independence and helping me to carve my own path,” Garcia said. “I didn’t have my parents to guide me toward STEM – I just sort of found it on my own and discovered physics on my own.”
When friends asked Promise Adebayo-Ige what he was doing over the summer, he told them he was trying to save the world by working at a national laboratory devoted to developing fusion energy.
Adebayo-Ige has been fascinated with the idea of fusion as an inexhaustible, inexpensive, and clean source of generating electric energy since he was a teenager. Now a rising senior majoring in chemical engineering at the University of Pennsylvania, he plans to attend graduate school in nuclear engineering with the goal of working on the quest for fusion energy
Interns work with PPPL researchers on a variety of projects.
One day after Labor Day, four early-career technicians officially began four-year apprenticeships at the Princeton Plasma Physics Laboratory (PPPL) where they will learn cutting-edge skills both on the job at a national laboratory and in the classroom.
Low-temperature plasma, a rapidly expanding source of innovation in fields ranging from electronics to health care to space exploration, is a highly complex state of matter. So complex that the Princeton Plasma Physics Laboratory (PPPL) has teamed with Princeton University to become home to a collaborative facility open to researchers from across the country to advance the understanding and control of this dynamic physical state.
Stellarators, twisty machines that house fusion reactions, rely on complex magnetic coils that are challenging to design and build. Now, a physicist at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) has developed a mathematical technique to help simplify the design of the coils, making stellarators a potentially more cost-effective facility for producing fusion energy.
Timothy Stoltzfus-Dueck, a theoretical physicist at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), has won a DOE Early Career Research Award for exceptional scientists in the early stages of their careers. Stoltzfus-Dueck will use the five-year, approximately $500,000 per year award to develop and test models essential to the confinement of plasma, the hot, charged gas that must be tightly confined in doughnut-shaped devices to produce fusion reactions.
Hillary Stephens is a physics professor at Pierce College Fort Steilacoom, a two-year college in Lakewood, Washington, where students typically aren’t exposed to research experiments. Stephens came to a three-day workshop at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) hoping to find plasma physics experiments she can bring back to the classroom.
PPPL and the New Jersey Department of Labor embark on a new apprenticeship program to offer high-tech on-the-job training and education to future technicians.
High-energy shock waves driven by solar flares and coronal mass ejections of plasma from the sun erupt throughout the solar system, unleashing magnetic space storms that can damage satellites, disrupt cell phone service and blackout power grids on Earth. Also driving high-energy waves is the solar wind — plasma that constantly flows from the sun and buffets the Earth’s protective magnetic field.
Now experiments led by researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) in the Princeton Center for Heliophysics
A tiny satellite under construction at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) could open new horizons in space exploration. Princeton University students are building the device, called a cubic satellite, or CubeSat, as a testbed for a miniaturized rocket thruster with unique capabilities being developed at PPPL.
Subatomic particles zip around ring-shaped fusion machines known as tokamaks and sometimes merge, releasing large amounts of energy. But these particles — a soup of charged electrons and atomic nuclei, or ions, collectively known as plasma — can sometimes leak out of the magnetic fields that confine them inside tokamaks. The leakage cools the plasma, reducing the efficiency of the fusion reactions and damaging the machine. Now, physicists have confirmed that an updated computer code could help to predict and ultimately prevent such leaks from happening.
Rajesh Maingi, a world-renowned expert on the physics of plasma, has been named to co-lead a national program to unify research on liquid metal components for future tokamaks, doughnut-shaped fusion facilities. Maingi, who heads research on boundary physics and plasma-facing components at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL), will coordinate the three-year project in conjunction with Oak Ridge National Laboratory and the University of Illinois at Urbana-Champaign.
Workshop offers women and underrepresented minority students a pathway into plasma physics and fusion energy research careers.
Graduate student Alexander Glasser, who arrived at the Program in Plasma Physics at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) after nearly a decade working on Wall Street, has won a highly competitive Charlotte Elizabeth Procter Honorific Fellowship from Princeton University. The fellowship provides full tuition and a stipend for the 2019-2020 academic year for students “displaying the highest scholarly excellence in graduate work.”
Vast rings of electrically charged particles encircle the Earth and other planets. Now, a team of scientists has completed research into waves that travel through this magnetic, electrically charged environment, known as the magnetosphere, deepening understanding of the region and its interaction with our own planet, and opening up new ways to study other planets across the galaxy.
Fusion energy could be a “game changer” as a possible future option for generating clean, safe, and abundant electric energy, U.S. Rep. Andy Kim (D-NJ) said during a visit to the Princeton Plasma Physics Laboratory (PPPL) on July 8.
Scientists seeking to bring to Earth the fusion that powers the sun and stars must control the hot, charged plasma — the state of matter composed of free-floating electrons and atomic nuclei, or ions — that fuels fusion reactions. For scientists who confine the plasma in magnetic fields, a key task calls for mapping the shape of the fields, a process known as measuring the equilibrium, or stability, of the plasma. At the U.S.
Beryllium, a hard, silvery metal long used in X-ray machines and spacecraft, is finding a new role in the quest to bring the power that drives the sun and stars to Earth. Beryllium is one of the two main materials used for the wall in ITER, a multinational fusion facility under construction in France to demonstrate the practicality of fusion power. Now, physicists from the U.S.
Leadership of laboratory experiments that bring astrophysical processes down to Earth has won physicist Will Fox the 2019 Thomas H. Stix Award. The American Physical Society (APS) honor, which recognizes outstanding early career contributions to plasma physics, was established in 2013 in the name of the late Thomas H. Stix, the pioneering plasma researcher who founded the graduate plasma physics program at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL).
Original and seminal experiments
From helping the nation’s power grid to advancing the creation of “a star in a jar” for a virtually endless supply of electric power, scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have developed insights and discoveries over the past year that advance understanding of the universe and the prospect for safe, clean, and abundant energy.
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.
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