Modeling of the negative ion source and accelerator of the ITER Neutral Beam Injector

This manuscript compiles about 10 years of research on the modelling of the negative ion source and the accelerator of the ITER Neutral Beam Injector. ITER is the next generation Tokamak for fusion applications. This work is essentially theoretical and numerical but comparison with experiments is performed as frequently as possible based on available data. The background physics and numerical techniques are described in details. This work is consequently accessible to a person without a large knowledge on the physics of negative ion sources or ion accelerators.