In this paper, we review the thermal plasma confinement and transport properties observed
and predicted in low aspect ratio tokamaks, or spherical tokamaks (STs), which can depart …

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 …

The importance of using a comprehensive suite of tools for the validation of a gyrokinetic
code is described. This is detailed by presenting experimental wavenumber spectra which …

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 …

ABSTRACT A new Doppler backscattering (DBS) system has been installed and tested on
the MAST-U spherical tokamak. It utilizes eight simultaneous fixed frequency probe beams …

This paper presents the first results of a study of the LH transition on the new spherical
Globus-M2 tokamak using the Doppler backscattering (DBS) diagnostic. New data …

Measurements of the turbulent density wavenumber spectrum, δne (k⊥), using the Doppler
Back-Scattering (DBS) diagnostic are reported from DIII-D H-mode plasmas with electron …

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 …

Spherical tokamaks (STs) typically have lower magnetic fields than conventional tokamaks,
but similar mass densities. Suprathermal ions with relatively modest energies, in particular …

Measurements of local density and magnetic field fluctuations near the pedestal top,
conditionally averaged over the edge localized mode (ELM) cycle, have been made in Mega …