Suppressed ion-scale turbulence in a hot high-beta plasma

Suppressed ion-scale turbulence in a hot high-beta plasma

December 2016 | L. Schmitz | Nature Communications | Paper

An economic magnetic fusion reactor favours a high ratio of plasma kinetic pressure to magnetic pressure in a well-confined, hot plasma with low thermal losses across the confining magnetic field.

Absence of Ion-scale Core Turbulence and Transport Barrier Formation with Passive/Active Divertor Biasing in the C-2/C-2U Field Reversed Configuration

Absence of Ion-scale Core Turbulence and Transport Barrier Formation with Passive/Active Divertor Biasing in the C-2/C-2U Field Reversed Configuration

October 2016 | Michel Tuszewski | APS-DPP | Poster

Experimentally measured inverted core density fluctuations spectra show the absence of ion-scale modes in the FRC core, in agreement with linear, local gyrokinetic simulations.

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.

Suppressed ion-scale turbulence in a hot high-beta plasma

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.