Development of a three-wave far-infrared laser interferometry and polarimetry diagnostics for the C-2W FRC Experiment

Development of a three-wave far-infrared laser interferometry and polarimetry diagnostics for the C-2W FRC Experiment

April 2018 | B. Deng | HTPD2018 | Poster

C-2W field-reversed configuration (FRC) experiments [1] are focused to resolve major physics issues facing the future of FRC devices. To achieve these goals, it is essential to measure the plasma equilibrium dynamics and monitor plasma fluctuations.

Design and Characterization of High Repetition Rate Lasers and Collection Optics for Thomson Scattering Diagnostics on C-2W

Design and Characterization of High Repetition Rate Lasers and Collection Optics for Thomson Scattering Diagnostics on C-2W

April 2018 | A. Ottaviano | HTPD2018 | Poster

A new Thomson scattering (TS) system is being constructed on C-2W for obtaining electron temperature and density profiles with high temporal and spatial resolution. Validating the performance of the TS’s custom designed system components is crucial to obtaining reliable Te and ne profiles of C-2W’s plasma.

Design of a Custom Insertable Probe Platform for Measurements of C-2W Inner Divertor Plasma Parameters

Design of a Custom Insertable Probe Platform for Measurements of C-2W Inner Divertor Plasma Parameters

April 2018 | A. DuBois | HTPD2018 | Poster

A custom motor controlled probe system has been designed to make spatially resolved measurements of temperature, density, flow, and plasma potential in the C-2W inner divertors. Measurements in the inner divertors, which have a radius of 1.7 m and are located on either end of the confinement vessel, are critical in order to gauge exactly how local settings affect the plasma conditions, confinement, and stability in the FRC core.

Inference of field reversed configuration topology and dynamics during Alfvenic transients

Inference of field reversed configuration topology and dynamics during Alfvenic transients

February 2018 | J.A. Romero | Nature Communications | Paper

Active control of field reversed configuration (FRC) devices requires a method to determine the flux surface geometry and dynamic properties of the plasma during both transient and steady-state conditions.

Coupled transport in field-reversed configurations

Coupled transport in field-reversed configurations

February 2018 | L. Steinhauer | Physics of Plasmas | Paper

Coupled transport is the close interconnection between the cross-field and parallel fluxes in differ- ent regions due to topological changes in the magnetic field. This occurs because perpendicular transport is necessary for particles or energy to leave closed field-line regions, while parallel transport strongly affects evolution of open field-line regions.