Ion source developments to supply mono & multi charged ion beams to the new NHa C400 hadrontherapy system.

Normandy Hadrontherapy (NHa) is developing, in collaboration with Ion Beam Applications (IBA), a full hadrontherapy treatment solution based on a new multiparticle cyclotron. 12 C 6+ and 4 He 2+ ions will be accelerated up to 400 MeV/u and (H 2 ) + up to 260 MeV/u. Three different ion sources will be carried out for each accelerated particle: the mono-charged ion source (H 2 ) + and low charged ion source He 2+ are provided by the Polygon Physics (PP) company. The carbon ion source is under development at NHa in collaboration with IBA and PP. The (H 2 ) + ion source is an industrial Tubular ECR Source (TES) fitted for the needs of the NHa C400 cyclotron (30 µA of (H 2 ) + ). The He 2+ ion source is a classic 10 GHz ECR type with a new concept because the complete source is set inside a vacuum chamber and it runs under 10 −6 mbar of gas residual pressure. The 12 C 6+ ion source is also an ECR type ion source operating at 14.5 GHz frequency, its design is under progress to produce a beam providing stability and reproducibility levels compatible with clinical use. The article will present the External Injection System of the NHa C400 cyclotron hence it will focus on the experimental results obtained with the (H 2 ) + ion source and preliminary outputs from the He 2+ ECRIS. A presentation of the multicharged ECRIS design dedicated to the 12 C 6+ production will be done.