Microwave-based diagnostics have found broad application in magnetic fusion plasma
diagnostics and are expected to be widely employed in future burning plasma experiments …

Turbulence in hot magnetized plasmas is shown to generate permeable localized transport
barriers that globally organize into the so-called" E x B staircase"[G. Dif-Pradalier et al …

Doppler backscattering has emerged in recent years as a powerful diagnostic tool in high
temperature fusion plasmas. The technique is sensitive to plasma turbulence flow and has …

Backscattering of a microwave beam close to the cut-off allows for measurement of density
fluctuations at a specified wave-number, selected by the scattering geometry, where ki is the …

A novel multichannel Doppler backscattering system has been designed and tested for
application on the DIII-D [JL Luxon, Fusion Sci. Technol. 48, 828 (2005)] and National …

First results from the optimized helias Wendelstein 7-X stellarator (W7-X) have shown that
core transport is no longer mostly neoclassical, as is the case in previous kinds of …

The radial electric field (E r) and its shear (∂ E r/∂ r) are believed to be fundamental for
turbulence suppression in magnetically confined plasmas. Doppler reflectometry offers a …

The technique of correlation Doppler reflectometry for providing radial correlation length L r
measurements is explored in this paper. Experimental L r measurements are obtained using …

Geodesic acoustic modes (GAMs) and zonal flows are nonlinearly driven, axisymmetric (m=
0 and n= 0) E× B flows, which are thought to play an important role in establishing the …

A Doppler reflectometer system has recently been installed in the Experimental Advanced
Superconducting (EAST) Tokamak. It includes two separated systems, one for Q-band (33 …