Researchers at PPPL have developed a new method that analyzes the plasma surrounding X-ray pulsars by coupling quantum mechanics with Einstein's special relativity. This technique can determine the density and field strength of the magnetosphere in greater detail than standard approaches.
The PPPL and Princeton University are participating in a high-performance computing project with the Intel Parallel Computing Center Program. The goal is to modernize the GTC-P code, which was originally developed for fusion research applications.
A recent study published in Nuclear Fusion indicates that coaxial helicity injection can improve the efficiency of doughnut-shaped fusion machines. The simulation results show that narrowing the magnetic loop's extension into the tokamak vessel can close up to 70% of field lines, increasing current flow and magnetic fields.
Researchers at PPPL discovered that the bootstrap current is mostly carried by magnetically trapped electrons, contradicting previous understanding. This finding provides a new explanation for the large size of the bootstrap current at the tokamak edge.
A Princeton graduate student has developed a program that helps stabilize fusion plasmas, reducing instabilities that decrease tokamak efficiency. The new method uses feedback from sensors for real-time control of plasma rotation and fuels fusion reactions.
Researchers at PPPL designed and tested a 'liquid lithium limiter' that circulated protective liquid metal within the walls of China's EAST tokamak, keeping plasma from cooling down and halting fusion reactions. The system improved tokamak performance by reducing impurities and maintaining optimal plasma conditions.
New findings suggest that turbulent plasma could improve inertial confinement fusion experiments by storing energy. The compression of fluid turbulence was modeled to show a positive impact on ICF experiments, suggesting a new design for compression-based fusion research. However, caveats and challenges remain in the field.
Researchers are using a facility at Princeton Plasma Physics Laboratory to detect Big Bang neutrinos, which could provide new insights into the birth of the cosmos. The project aims to measure the mass of these particles and explore their role in the evolution of the universe.
Researchers at PPPL gained insights into how turbulence affects heat leakage in fusion plasmas, finding a steep density gradient reduces electron turbulence and heat loss. This could lead to more efficient fusion reactors like ITER, reducing heat leakage.
The PPPL-led collaboration achieved a significant breakthrough in fusion energy research by creating a hydrogen-fueled superhot gas called a plasma on the W7-X stellarator. The achievement marks a major step forward for understanding plasma and demonstrates the potential of stellarators as a model for future fusion power plants.
The PPPL team will investigate the formation and growth of magnetic fields using the Titan Cray XK7 supercomputer, with the goal of understanding processes like Weibel instabilities and explosive magnetic reconnection. The research will also inform experiments at the National Ignition Facility.
The PPPL-designed scraper element will help physicists explore various magnetic field arrangements and plasma currents in the W7-X stellarator. The component intercepts heat from fusion reactions, reducing the risk of damage to the divertor and stellarator equipment.
Researchers at PPPL developed computer simulations capturing the evolution of an electric current inside fusion plasma without using a central electromagnet. The new method achieves high plasma currents by injecting radio-frequency waves and neutral beams into the plasma, showing promise for spherical tokamaks.
Researchers at Princeton Plasma Physics Laboratory have discovered a mechanism that can halt solar eruptions before they reach the Earth. This finding could improve the timing of future space missions and provide crucial insights for protecting satellites and power grids from geomagnetic storms.
PPPL's role in the W7-X stellarator experiment marks a significant achievement in fusion research. The US collaboration has successfully created and maintained a hot plasma for up to 30 minutes, a crucial milestone in developing sustainable fusion energy.
Researchers at DOE's Princeton Plasma Physics Laboratory have modeled new sources of turbulence in spherical tokamaks, a potential game-changer for fusion energy. The findings suggest that keeping non-uniform plasma flows within an optimized level and reducing trapped electron collisions could improve plasma confinement.
Researchers found a helix-shaped whirlpool of plasma that acts as a dynamo, creating electric and magnetic fields to prevent current from peaking. The conditions for this behavior include specific pressure and current gradients.
Physicists at PPPL found a clue to forming large-scale magnetic fields by analyzing small magnetic disturbances that combine under certain conditions. Small velocity shear creates the necessary environment for these disturbances to form one large disturbance, which can persist over billions of years.
Researchers Elena Belova and her team proposed a mechanism explaining why plasma fails to reach required temperatures in tokamaks. The new understanding could lead to improved control of temperature in future fusion devices, including ITER.
Researchers at PPPL have developed a detailed model of the source of the density limit, a puzzling limitation on fusion reactions. The findings suggest that a runaway growth of bubble-like islands can cause the plasma gas to cool and spiral apart, disrupting the reaction.
Scientists have developed a new method to control plasma rotation, a crucial aspect of fusion energy. The technique, which manipulates the intrinsic rotation of hot plasma gas within fusion facilities, has the potential to improve tokamaks' performance and reduce operating costs.
Studies found increased incidents of rheumatoid arthritis and giant cell arteritis in concert with the cycle of magnetic activity of the sun. Correlations were strongest between diseases and geomagnetic activity, with GCA incidence peaking within one year of intense geomagnetic activity.
Physicists at Princeton Plasma Physics Laboratory have simulated the formation of plasmoids in hot plasma gas that fuels fusion reactions. The discovery could lead to more efficient creation and maintenance of plasma through transient Coaxial Helicity Injection, simplifying tokamak design.
Scientists have discovered that injecting tiny grains of lithium into a plasma can dramatically improve its temperature and pressure, doubling the pressure at the outer edge and increasing the length of time it remains high. This breakthrough could lead to more efficient fusion reactions and potentially shorten the development timeline.
Delgado-Aparicio's research aims to eliminate impurities that cool plasma and halt fusion reactions, crucial for ITER and NSTX-U experiments. His $2.6M grant will fund development of a complex diagnostic tool to analyze impurity reactions with plasma.
Researchers have updated the TRANSP program to better simulate interactions between energetic particles and instabilities in plasma, which can affect fusion reactions. The updated code will provide a more accurate way to compute particle transport and improve simulations for future fusion facilities like ITER.
Researchers from General Atomics and Princeton Plasma Physics Laboratory made a major breakthrough in controlling heat bursts in fusion reactors. They found that tiny magnetic fields can create two distinct responses, allowing more heat to leak out and preventing intense heat bursts.
Researchers at PPPL used 3D printers to create customized parts for experiments, including cones, cylinders, and electrodes. The printed parts proved accurate and reliable, meeting laboratory requirements.
Scientists at PPPL identified how magnetic reconnection transforms magnetic energy into particle energy, with 50% conversion rate. The process involves electron energization and creation of electrically charged field that powers ions.
Researchers at Princeton University and the DOE's PPPL are developing a prototype system that can verify the presence of warheads without collecting classified information. The system uses high-energy neutrons to compare warheads with known true warheads, providing a key step towards reducing nuclear arms.
The Princeton Plasma Physics Laboratory has received funding to study the role of plasma in nanoparticle synthesis, a process used in various applications including energy technologies and pharmaceutical products. Key researchers will investigate complex interactions between hot plasma gas and material synthesis.
Researchers at Princeton University and PPPL are developing a unique process to verify that nuclear weapons contain true warheads. The goal is to confirm the authenticity of inspected items without revealing sensitive information.
Researchers worldwide are embarking on DEMO projects to demonstrate fusion energy production, following the construction of ITER in France. The challenges ahead include finding solutions to well-known scientific and technical issues.
Researchers will develop computer code to model the complex conditions at the edge of fusion plasmas, which could help design and operate facilities for generating electricity from fusion. The validated model could guide developers of next-generation fusion facilities, including ITER.
A new model developed by Robert Goldston predicts the size of a key barrier to fusion that could serve as a starting point for overcoming it. The agreement appears too close to have happened by chance, suggesting that the model's results are eerily close to data.
Researchers from DOE/Princeton Plasma Physics Laboratory discovered a possible solution to the density limit, a major impediment to harnessing fusion. Tiny, bubble-like islands in plasmas appear to be at the root of the problem, and injecting power directly into these islands could help reach the high temperatures needed for fusion.
Researchers at PPPL developed a high-resolution X-ray imaging crystal spectrometer to observe the effects of radiofrequency waves on plasma behavior. The spectrometer revealed self-generated and RF-driven flow, which could be beneficial for fusion research and future reactors.
Ron Davidson, a professor at Princeton University, has received the 2005 Particle Accelerator Science and Technology Award for his contributions to the theory of charged particle beams. His work has applications in particle physics, nuclear physics, ion-beam-driven fusion, high energy density physics, and cancer therapy.
The U.S. Department of Energy's Princeton Plasma Physics Laboratory has awarded subcontracts worth $8 million and $4.5 million to manufacture major components for the National Compact Stellarator Experiment (NCSX), a fusion energy project aiming to advance basic science and explore innovative concepts.
The US ITER Project Office will be managed by the Princeton Plasma Physics Laboratory in partnership with Oak Ridge National Laboratory. This collaboration aims to secure technical assistance, procure hardware contributions, and coordinate US fusion community activities for the international ITER project.
The Department of Energy recognizes PPPL's DeLooper for his crucial role in coordinating the Snowmass Fusion Summer Study Workshops, which brought together leading scientists from the US and international community. This success led to a consensus in the fusion community that enabled the Administration to join ITER negotiations.
Kaye, a principal research physicist at PPPL, was recognized for his groundbreaking investigation of strongly heated plasmas and their characteristics. His work is crucial to predicting plasma performance in magnetic fusion energy devices.
Krommes received recognition for his research on plasma turbulence, a crucial aspect of fusion energy, while Parsells was cited for his ingenuity in adapting diamond wire cutting technology for the TFTR D&D Project.
Researchers Masaaki Yamada and Hantao Ji at PPPL have received an award from the American Physical Society for their groundbreaking research on magnetic reconnection. Their work has elucidated a fundamental problem in plasmas, relevant to fusion energy and astrophysical phenomena.
The Princeton Plasma Physics Lab team successfully decommissioned the Tokamak Fusion Test Reactor without significant radiological exposure. The $40.3 million project was completed under budget, demonstrating a safe dismantling process for large fusion facilities.
The Tokamak Fusion Test Reactor (TFTR) has been safely dismantled and removed, marking a significant milestone in the history of fusion research. The successful decommissioning demonstrates the promise of fusion as an environmentally attractive energy source, with minimal production of waste.
PPPL will participate in four SciDAC projects focused on plasma confinement systems and data analysis, aiming to improve physics models and computer resources. The projects will enable geographically separated scientists to collaborate and analyze high-speed data.
Scientists at PPPL have achieved a significant breakthrough in fusion research, producing the highest plasma current ever recorded in a spherical torus device - 1 million amperes. This milestone is crucial for understanding the physics of fusion and potentially leading to more efficient development paths for fusion energy.
Researchers used powerful supercomputers to simulate microturbulence in plasma, gaining valuable new physics insights that correlate with experimental trends. The simulations, performed on 400 million particles over 5,000 time-steps, demonstrate the maturity of high-performance scientific computing as a tool for discovery.
The Princeton Plasma Physics Laboratory will apply its advanced laser technology to monitor the characteristics of synthetic fibers during manufacturing. This will enable real-time process adjustments, reducing production time and costs. The project aims to significantly improve fiber properties measurement and production efficiency.