• C.M. Yim, S. Noh
  POSTECH, Pohang, Kyungbuk
• H.-S. Kang, C. Kim, I.S. Ko
  PAL, Pohang, Kyungbuk

At Pohang Accelerator Laboratory, a femto-second THz facility was constructed for the experiments using femto-second THz radiation. The fs-THz radiation is generated from 60-MeV electron linac which consists of a photocathode RF gun, two accelerating columns, and two magnetic-chicane bunch compressors. The coherent transition radiation (CTR) is used for THz radiation generation. To generate high intensity THz radiation, the electron bunch length should be smaller than 200 fs. We report THz image obtained using IR-CCD　camera and measured beam parameters including bunch length, energy spread, charge, emittance, and transverse beam size.