Plasma heating and generation of energetic D ions with the 3-ion ICRF + NBI scenario in mixed H-D plasmas at JET-ILW

摘要: Dedicated experiments were conducted in mixed H-D plasmas JET to demonstrate the effiiciency of 3-ion ICRF scheme for plasma heating, relying on injected fast NBI ions as resonant ion species. Strong core localization RF power deposition close vicinity ion-ion hybrid layer was achieved, resulting an efficient generation energetic D ions, strong enhancement neutron rate and observation Alfvenic modes. A consistent physical picture that emerged from a range fast-ion measurements at JET, including gamma-ray measurements, high-energy neutral particle analyzer MHD mode analysis, is presented. The possibility moderate energies with ratio PICRF/PNBI choice injectors demonstrated. An outlook possible applications schemes, recent example its use D-3He promising schemes D-T plasmas, are