Charge Exchange Recombination Spectroscopy in HighField Tokamaks

Fusion energy has been actively researched for thelast fifty years. Although, there are still manyphysical and engineering problems to solve, theinternational scientific community steadily movesforward to that very sacred goal - creation ofcontrolled nuclear fusion and its use as an ultimateenergy source for the future. This book includes adetailed description of an optical spectroscopictechnique used for critical measurements of fusionplasmas and of the analysis methods. A chargeexchange recombination spectroscopy diagnostic isimplemented on Alcator C-Mod tokamak to study thehigh density plasma in a high magnetic field.Density, temperature, and flow velocity of theemitting plasma ions are derived from the analysis ofthe emission spectra. The application of theCXRS-measured temporally and spatially resolvedplasma parameters to the study of the impurityanomalous transport and the ITB (impurity transportbarrier) turbulence suppression mechanism wasdemonstrated.