A5023732003- Magnetic confinement fusion research
- Fusion materials and technologies
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Plasma Diagnostics and Applications
- Laser-Plasma Interactions and Diagnostics
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Heat Transfer Mechanisms
- Fluid Dynamics and Turbulent Flows
- Turbomachinery Performance and Optimization
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- Pesticide Residue Analysis and Safety
- Laser-induced spectroscopy and plasma
- Gamma-ray bursts and supernovae
- Nuclear Engineering Thermal-Hydraulics
- Solid-state spectroscopy and crystallography
- Geophysics and Sensor Technology
- Analytical Chemistry and Sensors
- Nuclear Materials and Properties
- Stellar, planetary, and galactic studies
- Silicon and Solar Cell Technologies
- Optical Systems and Laser Technology
- Advanced NMR Techniques and Applications
Tri Alpha Energy (United States)
2018-2025
Columbia University
2023-2024
Carleton University
1989-1990
Abstract The objectives of NSTX-U research are to reinforce the advantages STs while addressing challenges. To extend confinement physics low- A , high beta plasmas lower collisionality levels, understanding transport mechanisms that set performance and pedestal profiles is being advanced through gyrokinetic simulations, reduced model development, comparison NSTX experiment, as well improved simulation RF heating. develop stable non-inductive scenarios needed for steady-state operation,...
TAE Technologies, Inc. (TAE) is pursuing an alternative approach to magnetically confined fusion, which relies on field-reversed configuration (FRC) plasmas composed of mostly energetic and well-confined particles by means a state-of-the-art tunable energy neutral-beam (NB) injector system. TAE's current experimental device, C-2W (also called 'Norman'), the world's largest compact-toroid device has made significant progress in FRC performance, producing record breaking, high temperature...
Abstract The MANTA (Modular Adjustable Negative Triangularity ARC-class) design study investigated how negative-triangularity (NT) may be leveraged in a compact, fusion pilot plant (FPP) to take ‘power-handling first’ approach. result is pulsed, radiative, ELM-free tokamak that satisfies and exceeds the FPP requirements described 2021 National Academies of Sciences, Engineering, Medicine (NASEM) report ‘Bringing Fusion U.S. Grid’ (2021 Bringing Grid ). A self-consistent integrated modeling...
This paper presents the results of performance measurements and detailed mean flow field at rotor inlet exit in three squirrel-cage fan configurations. The flow-field were taken with a five-hole probe yield total pressure, static components velocity. Measurements for two casing throat areas different rotors. For each configuration was measured rates below, near, above best-efficiency point. Flow patterns are complex there is reverse through blading even operating condition. Although complex,...
Abstract Abnormal (deviating from the target) variations in plasma vertical position Z and current <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mrow><mml:msub><mml:mi>I</mml:mi><mml:mtext>p</mml:mtext></mml:msub></mml:mrow></mml:math> (such as displacements, transient ‘spikes’ quenches) constitute common elements of a disruption, phenomenon that is to be mitigated, or ultimately avoided future reactor-relevant tokamaks. While these abnormalities are...
Abstract Reliable vertical position control will be an essential element of any future tokamak-based fusion power plant in order to reduce disruptions and maximize performance. We investigate methods improve controllability boundary determination plasma operational space demonstrate a data-driven approach based on direct pseudoinversion data that is rigorously quantitative, applicable real-time systems, physically intuitive interpret. Applied historical shot from entire run campaigns the...
A fundamental component of any magnetically confined fusion experiment is a firm understanding the magnetic field. The increased complexity C-2W machine warrants an equally enhanced diagnostic capability. outfitted with over 700 field probes various types. They are both internal and external to vacuum vessel. Inside, linear array innovative in-vacuum annular flux loop/B-dot combination provide information about plasma shape, size, pressure, energy, temperature, trapped when coupled...
In TAE Technologies' C-2W experiment, electrode biasing is utilized for boundary control of a field-reversed configuration (FRC) plasma embedded in magnetic mirror. Understanding the underlying physics associated with FRC rotation, stabilization, and heating crucial improving machine performance. Impurity ion rotation temperature are sensitive to effects, measurements these quantities can provide insight into important dynamics overall effectiveness system. To this end, charge-exchange...
Abstract Fusion power output from spherical tokamaks would benefit increased confined plasma density, but there exists a limit on the density before confinement is lost and current disrupted. This has long been characterized by simple, global Greenwald proportional to inversely cross sectional area of plasma. It shown that in database discharges National Spherical Tokamak Experiment (NSTX) Mega Ampere (MAST) tokamaks, likelihood disruption does increase above limit, especially rampdown...
The C-2W device (“Norman”) [Gota et al., Nucl. Fusion 59, 112009 (2019)] has produced and sustained beam-driven field-reversed configuration (FRC) plasmas embedded in a magnetic mirror geometry using neutral beams end-bias electrodes located expander divertors. Several discrete vessels comprise this device, many imaging instruments are required order to view the plasma throughout. To meet need, suite of spatially radiometrically calibrated, high-speed camera systems have been deployed....
The C-2W device (also known as “Norman”) at TAE Technologies has proven successful generating stable, long-lived field-reversed configuration (FRC) plasmas with record temperatures. largest Mirnov probe array in measures three components of the magnetic field just inside vessel wall 64 locations distributed approximately evenly cylindrical vessel’s azimuthal and axial dimensions. This nearly rectangular probes creates a unique opportunity to apply higher order singular value decomposition...
The process of associating spectral peaks in emission radiation data with particular charge states specific elements is a common task the field plasma diagnostics both laboratory and astrophysical settings. Existing techniques for this purpose are often highly manual or can rely heavily on theoretical models assumptions parameters. We present numerical approach to largely automate process. combines statistics from experimental predictions transition strengths observed intensity order...
This paper presents the results of performance measurements and detailed mean flow field at rotor inlet exit in three squirrel cage fan configurations. The flow-field were taken with a five-hole probe yield total pressure, static pressure components velocity. Measurements for two casing throat areas different rotors. For each configuration was measured rates below, near above best-efficiency point. Flow patterns are complex there is reverse through blading even operating condition. Although...