Magnetic Diagnostic Suite of the C-2W Field-Reversed Configuration Experiment

April 2018 | T. Roche | HTPD2018 | Poster

The C-2W machine is the world’s premier Advanced Beam-Driven FRC
n Monitoring the complete magnetic evolution of the plasma is essential for
understanding the system’s dynamics
n Over 500 B-field signals are monitored to provide both post-shot analysis data and data for an advanced active feedback system.

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Fast-framing camera based observations of spheromak-like plasmoid collision and merging process using two magnetized coaxial plasma gun

April 2018 | T. Matsumoto | HTPD2018 | Poster

We have been conducting compact toroid (CT) collision and merging experiments by using two magnetized
coaxial plasma guns (MCPG). As is well known, an actual CT/plasmoid moves macroscopically in a confining magnetic field. Therefore, three-dimensional measurements are important in understanding the behavior of the CTs.

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C-2W Magnetic Measurement Suite

October 2017 | T. Roche | APS-DPP | Poster

Monitoring the complete magnetic evolution of the plasma is essential for understanding the system’s dynamics. Over 1000 B-field signals are monitored to provide both post-shot analysis data and data for an advanced active feedback system under development

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Multi-Wavelength Interferometry and Axial Polarimetry on C-2W

October 2017 | Roger J Smith | APS-DPP | Poster

Tri Alpha Energy’s C-2W device is operational and represents another major step in a progression of advanced beam-driven Field-Reversed Configuration (FRC) confinement devices that have prolonged the lifetime, increased stability and added significant neutral beam injection power to heat and sustain an FRC plasma.

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Separatrix E×B Shear Flows and Turbulence Propagation in the C-2U FRC; Diagnostic Upgrades for Density and Magnetic Field Fluctuation Measurements in C-2W

October 2017 | L. Schmitz | APS-DPP | Poster

Ion-scale modes have been shown to be stable in the C-2/C-2FRC core, in agreement with initial gyrokinetic simulation results, with a characteristic inverted toroidal wavenumber spectrum confirmed via Doppler Backscattering (DBS) measurements.

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High Time Resolution Reconstruction of Electron Temperature Profiles with a Neural Network in C-2U

October 2017 | Gabriel Player | APS-DPP | Poster

An attempt to experimentally determine electron heating due to neutral beam injection highlighted a diagnostic gap – lack of time resolution on single-shot Thomson measurements.

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Development of Spatial Heterodyne Spectroscopy Measurements for the C-2W Plasma Expansion Divertor

October 2017 | D. Sheftman | APS-DPP | Poster

Accurate operation and high performance of the open field line plasma surrounding the Field Reversed Configuration (FRC) is crucial to achieving the goals of successful temperature ramp up and confinement improvement on C-2W.

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