One of the key question of plasma confinement in fusion devices is how plasma turbulence influences the radial transport of particles and energy. In this thesis a new microwave heterodyne poloidal correlation reflectometry diagnostic has been developed and installed at the tokamak ASDEX Upgrade to investigate turbulent density fluctuations. This diagnostic yields information on fundamental turbulent parameters such as the propagation velocity, the correlation length, the decorrelation time and the inclination of the turbulent eddies in the toroidal-poloidal plane. The obtained measurements are compared with theoretical predictions and simulations.
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One of the key question of plasma confinement in fusion devices is how plasma turbulence influences the radial transport of particles and energy. In this thesis a new microwave heterodyne poloidal correlation reflectometry diagnostic has been developed and installed at the tokamak ASDEX Upgrade to investigate turbulent density fluctuations. This diagnostic yields information on fundamental turbulent parameters such as the propagation velocity, the correlation length, the decorrelation time and t...
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