The Linear IFMIF (International Fusion Materials Irradiation Facility) Prototype Accelerator (LIPAc) is aiming at demonstrating the low-energy section of a 40 MeV/125 mA IFMIF deuteron accelerator up to 9 MeV with a full beam current in continuous-wave operation. For such a high-power beam, the LIPAc injector is required to produce a beam current of 140 mA and 100 keV D+ beams. The injector commissioning to reach high beam current has been progressing at high duty cycle operation, then stable operation for many hours at a beam condition of 150 mA total extracted current. This result demonstrates that the LIPAc injector can meet the required performance for nominal 125 mA long pulse deuteron beam acceleration.
This paper describes the development of a high-current continuous-wave deuteron injector for the Linear IFMIF Prototype Accelerator (LIPAc), which is a key component of the International Fusion Materials Irradiation Facility. The injector has achieved a stable operation at 150 mA, exceeding the required 125 mA beam current for the IFMIF accelerator, demonstrating its capability to meet the performance needs.