This Letter reports on observed interplay between beam-driven modes of sweeping
frequency (chirping modes) and transitions to the enhanced global confinement regime
(H-mode) and back to the low confinement regime (L-mode) in the spherical tokamak
ST40. The H-modes of plasma confinement are identified from decreased intensity of
Dα signal and f…
New Technologies such as High Temperature Superconducting magnets and advanced computing in Fusion Reactors, Advanced Generation IV Reactor Technologies or Off-Site Modular Construction are exciting developments in low carbon energy. Modular Reactors enable “factory shop build and transport to site” according to the International Atomic Ener…
