Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device

May 2016 | T. Matsumoto | Review of Scientific Instruments | Paper

A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field- reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field.

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.

Gyrokinetic simulation of driftwave instability in field-reversed configuration

Gyrokinetic simulation of driftwave instability in field-reversed configuration

May 2016 | Daniel Fulton | Physics of Plasmas | Paper

Following the recent remarkable progress in magnetohydrodynamic (MHD) stability control in the C-2U advanced beam driven field-reversed configuration (FRC), turbulent transport has become one of the foremost obstacles on the path towards an FRC-based fusion reactor.

Control of ion gyroscale fluctuations via electrostatic biasing and sheared E×B flow in the C-2 field reversed configuration

March 2016 | L. Schmitz | AIP Conference Proceedings | Paper

Control of radial particle and thermal transport is instrumental for achieving and sustaining well-confined high-β plasma in a Field-Reversed Configuration (FRC). Radial profiles of low frequency ion gyro-scale density fluctuations (0.5 ≤ kρs ≤ 40), consistent with drift- or drift-interchange modes, have been measured in the scrape-off layer (SOL) and core of the C-2 Field-Reversed Configuration (FRC), together with the toroidal ExB velocity.

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.