Development of a Large Beam Facility for the Application of High Power Ion Beams

A large beam facility for the application of high power ion beams has been developed at the Korean Atomic Energy Research Institute (KAERI). The primary usage of this facility is to develop an 8 MW neutral beam heating system for a tokamak, but other applications using a large beam would also be possible in the near future. The facility is composed of a bucket ion source (100 kV, 55 A), related beam line components including a large vacuum chamber (3 m x 4 m x 5 m), power supplies for the ion source, control and DAS system (PXI based), beam diagnostics system (optical multichannel analyzer), and a water circulation system (2 MW) for cooling of the beam line components. The maximum beam parameters at present are a beam energy of 95 keV and a beam current of 36 A with the beam size of 13 x 45 cm2. A maximum pulse length of 200 seconds can be achieved with a 1 MW beam power. The beam power with hydrogen ions will be increased up to 5.5 MW during 20 seconds. (author)