Impurity-ion rotation dynamics in C-2W
November 2020 | M. Nations | APS-DPP | Poster
Edge biasing of annular electrodes in the divertor region is routinely utilized as a boundary control technique to stabilize the FRC in the confinement vessel.
Electric field profile measurements in C-2W from impurity ion radial momentum balance
October 2019 | Marcel Nations | APS-DPP | Poster
The diagnostic provides spatially- and temporally- resolved measurements of key impurity ion parameters. Impurity ion velocity (Doppler shift).
Impurity Transport in the C-2W experiment
October 2019 | D. Sheftman | APS-DPP | Poster
Reduction of impurity influx from material surfaces is essential to achieve high temperatures in fusion experiments. In the beam driven field reversed configuration C-2W device…
Development of a Zeff Diagnostic Using Visible and Near-infrared Bremsstrahlung Light for the C-2W Field-Reversed Configuration Plasma
April 2018 | M. Nations | HTPD2018 | Poster
The presence of impurities can significantly affect plasma performance since they can account for substantial radiative power losses. To keep impurity content of the plasma low, mitigating strategies (e.g., wall conditioning by titanium gettering) are employed to help pump neutrals and reduce wall recycling
Z-Effective from Bremsstrahlung Light in the C-2 FRC
October 2014 | E. Garate | APS-DPP | Poster
An absolutely-calibrated 12-chord Bremsstrahlung array has been implemented on C-2 and is being used to infer Z-effective profiles and line-averaged values.