Synchrotron Radiation From Plasmas with Sub-Relativistic Temperatures
Oct 2017 | A. Necas | APS-DPP | Poster
Theory for synchrotron radiation by high temperature (sub- relativistic) electrons has been developed
Magnetohydrodynamic transport characterization of a Field Reversed Configuration
September 2017 | M. Onofri | Physics of Plasmas | Paper
The transport phenomenon of a Field Reversed Configuration (FRC) is studied using the newly developed two-dimensional code Q2D, which couples a magnetohydrodynamic code with a Monte Carlo code for the beam component. The simulation by Q2D of the transport parallel to the simple open h-pinch fields and its associated outflow phenomenon shows an excellent agreement with one of the leading theories, elevating the Q2D validity and simultaneously deepening the theoretical understanding of this fundamental process.
Drift-wave stability in the field-reversed configuration
August 2017 | C. K. Lau | Physics of Plasmas | Paper
Gyrokinetic simulations of C-2-like field-reversed configuration (FRC) find that electrostatic drift- waves are locally stable in the core. The stabilization mechanisms include finite Larmor radius effects, magnetic well (negative grad-B), and fast electron short circuit effects.
Transport studies in high-performance field reversed configuration plasmas
May 2016 | S. Gupta | Physics of Plasmas | Paper
A significant improvement of field reversed configuration (FRC) lifetime and plasma confinement times in the C-2 plasma, called High Performance FRC regime, has been observed with neutral beam injection (NBI), improved edge stability, and better wall conditioning.
Robustness of waves with a high phase velocity
March 2016 | T. Tajima | AIP Conference Proceedings | Paper
Norman Rostoker pioneered research of (1) plasma-driven accelerators and (2) beam-driven fusion reactors. The collective acceleration, coined by Veksler, advocates to drive above-ionization plasma waves by an electron beam to accelerate ions. The research on this, among others, by the Rostoker group incubated the idea that eventually led to the birth of the laser wakefield acceleration (LWFA), by which a large and robust accelerating collective fields may be generated in plasma in which plasma remains robust and undisrupted.
Gyrokinetic particle simulation of a field reversed configuration
January 2016 | D. Fulton | Physics of Plasmas | Paper
Gyrokinetic particle simulation of the field-reversed configuration (FRC) has been developed using the gyrokinetic toroidal code (GTC). The magnetohydrodynamic equilibrium is mapped from cylindrical coordinates to Boozer coordinates for the FRC core and scrape-off layer (SOL), respectively.
Beam instabilities and their impact on neutron reactivity
October 2014 | A. Necas | APS-DPP | Poster
In standard C-2 Field Reversed Configuration plasmas, a toroidal current is driven in deuterium plasma with hydrogen neutral beam injection.
Plasma flow and electron losses in the expander divertor of FRC
October 2014 | P. Yushmanov | APS-DPP | Poster
Increasing understanding of electron dynamics in large expander ratio FRC diverter by analytic and numerical models.
Two-dimensional interpreter for field-reversed configurations
August 2014 | L. Steinhauer | Physics of Plasmas | Paper
An interpretive method is developed for extracting details of the fully two-dimensional (2D) “internal” structure of field-reversed configurations (FRC) from common diagnostics.
Rotational stability a long field-reversed configuration
February 2014 | D. Barnes | Physics of Plasmas | Paper
Rotationally driven modes of long systems with dominantly axial magnetic field are considered. We apply the incompressible model and order axial wavenumber small. A recently developed gyro-viscous model is incorporated. A one-dimensional equilibrium is assumed, but radial profiles are arbitrary.