Multi-sensor data fusion for enhanced analysis of electrode arcing in the C-2W experiment

The TAE Technologies C-2W experimental device (also called "Norman") produces advanced beam-driven field reversed configuration (FRC) plasmas. [1] Norman incorporates electrode biasing for improved plasma stability and heating, but under extreme conditions arc discharges can occur on the electrode surface. In an effort to understand the effects of electrode arcing on the C-2W experiment, a system was developed which combines data from several different optical and electrical diagnostics to classify arcing states with enhanced precision. Arcing state data is then combined with data from additional diagnostics, experimental parameters, and machine configuration information in order to enable a comprehensive analysis of electrode arcing. Experimental correlations related to electrode arcing are presented and the physics of arcing is discussed. 

[1] H. Gota et al., Nucl. Fusion 59, 112009 (2019).