100 MeV HIGH-DUTY-FACTOR PROTON LINAC DEVELOPMENT AT KAERI*

The Proton Engineering Frontier Project (PEFP) is developing a 100MeV high-duty-factor proton linac, which consists of a 50keV proton injector, a 3MeV radio frequency quadrupole, a 20MeV drift tube linac, a 20MeV beam transport line, a 100MeV drift tube linac, and a 100MeV beam transport line. It will supply proton beams of 20MeV and 100MeV to users for proton beam applications with a beam duty factor of 24% and 8% respectively. A 20MeV front-end accelerator with CW RF systems has been constructed at KAERI Daejeon test stand, and the other part of the accelerator is being fabricated and it will be installed at the new site at Gyeongju City. The preliminary results of the 20MeV proton linac and the status of the 100MeV proton linac will be presented.