Evidence of a nonlinear transition from mitigation to suppression of the edge localized mode
(ELM) by using resonant magnetic perturbations (RMPs) in the EAST tokamak is presented …

Mastering nuclear fusion, which is an abundant, safe, and environmentally competitive
energy, is a great challenge for humanity. Tokamak represents one of the most promising …

Doppler backscattering (DBS) is a microwave diagnostics method typically used to study the
plasma rotation velocity. Apart from conventional techniques, more advanced forms of DBS …

It is necessary to achieve simultaneous exhaust of excessive transient and steady-state heat
fluxes on the divertor target for the divertor protection in the future fusion reactors. The …

The high density fluctuation poloidal wavenumber, k θ (k θ> 8 cm− 1, k θ ρ s> 5, ρ s is the ion
gyro radius using the ion sound velocity), measurement capability of a new Doppler …

Doppler backscattering system can measure the perpendicular velocity and fluctuation
amplitude of the density turbulence with intermediate wavenumber. An eight-channel …

Measurements of fluctuation characteristics and the radial electric field profile are critical for
advancing the understanding of a range of phenomena in tokamaks, including turbulent …

We use beam tracing—implemented with a newly-written code, Scotty—and the reciprocity
theorem to derive a model for the linear backscattered power of the Doppler backscattering …

Investigation of filamentary structures was performed on the spherical tokamak Globus-M by
the Doppler backscattering (DBS) method. Filaments were detected in the H-mode regime …

The I-mode is a natural edge localized mode (ELM)-free regime with H-mode-like improved
energy confinement and L-mode-like particle confinement, making it an attractive scenario …