Profile Measurements of Bremsstrahlung Gamma-Rays from Tungsten Plates for Radioactive Isotope Production via Photonuclear Reaction using a 60 MeV Electron Linac

Ken Takahashi, Hiroyuki Hama, Fujio Hinode, Shigeru Kashiwagi, Hidetoshi Kikunaga, Toshiya Muto, Ikurou Nagasawa, Ken-Ichi Nanbu, Yoshinobu Shibasaki, Toshimi Suda, Chihiro Tokoku, Kyo Tsukada (+5 others)
Radioactive isotopes have been produced via photo-nuclear reaction using a 60 MeV high-power electron linac for research fields of nuclear chemistry and radioac-tive analysis at Research Center for Electron Photon Science (ELPH), Tohoku University. The electron beam with an average current more than 100 μA is transported to an electron-bremsstrahlung gamma-ray converter of 2 mm thickness platinum or tungsten plate at the irradiation station. A target of 10 mm diameter is placed 3 cm behind a
more » ... ed 3 cm behind a converter. It is enclosed with a quartz glass in the water cooling system and is irradiated for photonuclear reaction. Since the correlation between the spatial profile of bremsstrahlung gamma-rays at the target position and accelerator parameters is of our primary interest, nickel thin films are irradiated and the profiles of bremsstrahlung gamma-rays are measured by intensity distribution measurements of 57Ni radioactivity using the phosphorus imaging plate. In the meantime, the beam emittance and Twiss parameters are measured.
doi:10.18429/jacow-ipac2016-tupow011 fatcat:ha35pdhltzdyzmyzaafarjyzoi