Numerical Simulation of secondary voloume emission in a negative hydrogen ion beam

ITER is an experiment to prove the possibility of obtaining energy from the nuclear fusion. In its heating system it needs negative ions accelerators and to obtain preliminary information about the beam optics and behaviour of these, numerical codes are used. In this thesis work one of these simulation codes, called IBSimu , has been adapted to simulate not only the primary beam optics, but also to take account of the possibility of reaction between accelerated particles and the background gas, and eventually track the reactions product. Moreover many simulation have been done, not really with the purpose to predict the behaviour of ELISE, the accelerator geometry used, but more to verify the proper operation of the developed code.