• H.-J. Kwon, E.-M. An, Y.-S. Cho, I.-S. Hong, J.-H. Jang, D.I. Kim, H.S. Kim, K. Min, B.-S. Park, K.T. Seol, Y.-G. Song, S.P. Yun
  KAERI, Daejon

The 20MeV proton accelerator has been operating since 2007 when it got an operational license at Korea Atomic Energy Research Institute (KAERI) by Proton Engineering Frontier Project (PEFP). Beam property such as an emittnace was measured at the low energy beam transport (LEBT) to characterize the beam into the RFQ. In addition, several parts were modified to test the adaptability of those which would be used for the 100MeV linac. The modulator for the 100MeV linac was installed and tested in the 20MeV linac test bench. In addition, low level RF (LLRF) system was modified in the overall configuration and the operator interface (OPI) with EPICS. In this paper, the beam property measurement results and modification of the linac are presented.