Spitzer 1951 stellarator + W7-X 2015: helical magnetic-axis avoids tokamak's resistive-disruption + plasma current; Wendelstein-7X reached 100M K + 26 min plasma-shot 2023; lower beta limit.
Spitzer 1951 stellarator + W7-X 2015: helical magnetic-axis avoids tokamak's resistive-disruption + plasma current; Wendelstein-7X reached 100M K + 26 min plasma-shot 2023; lower beta limit.