TY - RPRT TI - Direct stellarator coil optimization for nested magnetic surfaces with precise quasi-symmetry AU - Giuliani, Andrew AU - Wechsung, Florian AU - Cerfon, Antoine AU - Landreman, Matt AU - Stadler, Georg PY - 2023 DO - 10.1063/5.0129716 UR - https://www.osti.gov/biblio/2419322 ID - 2419322 ER -