Characterization of the DIII-D High-Field Side Scrape-Off Layer and Implications for High-Field Side Lower Hybrid Current Drive

Characterization of the DIII-D High-Field Side Scrape-Off Layer and Implications for High-Field Side Lower Hybrid Current Drive Leppink, Evan High-field side lower hybrid current drive (HFS LHCD) is a potential candidate to provide efficient, non-inductive, off-axis current drive in tokamaks for steady-state operation, stability control, and/or access to advanced tokamak scenarios. The first experimental test of HFS LHCD has begun on the DIII-D tokamak. LHCD is known to be sensitive to scrape-of