Abstract : This thesis is the result of collaboration between the Pantechnik company and the LPSC. It consisted in the development of a new test bench dedicated to the characterization of 2.45 GHz ECR ion sources with the aim of the production of high currents beams for industrial purposes. Two ECR ions sources with different magnetic structures have been tested around the same RF injection system. A new 2.45 GHz ECRIS, named SPEED, featuring a dipolar magnetic field at the extraction has been designed and tested. A study of the beam extraction in the dipolar magnetic field is proposed. First tests have shown a total ionic current density of ~10 mA/cm2 with a 900 W RF power. Tests with hydrogen plasma have shown a maximum of current on the H2+ species. Recommendations are given to modify the magnetic structure to improve the H+ production yield. The MONO1000 ion source has been tested at high RF power with a wave guide type injection system. Intense total ionic current densities have been measured up to ~95 mA/cm2 with a diode extraction system. First results using a new multielectrode system are presented.