[2G14-19] LLFP, DPA Cross Section

[2G18] Development of cryogenic proton irradiation device and measurement of displacement cross sections with 200 MeV protons

*Yosuke Iwamoto¹, Makoto Yoshida², Toshimasa Yoshiie³, Daiki Satoh¹, Hiroshi Yashima³, Hiroki Matsuda¹, Shin-ichiro Meigo¹, Tatsushi Shima⁴ (1. JAEA, 2. KEK, 3. KURRI, 4. RCNP, Osaka Univ.)

Keywords:displacement cross section, cryogenic irradiation experiment, electrical resistance, proton, PHITS

To validate radiation transport code, PHITS, used for the estimation of radiation damages at accelerator facilities, we measured electrical resistivity increase of aluminum and copper induced by radiation defects under cryogenic 200 MeV proton irradiation. As a result, we measured electrical resistances of samples keeping with beam current of below 3 nA and temperature of below 5 K. The experimental displacement cross sections of aluminum and copper agreed with results calculated by PHITS with the defect production efficiency.