[1M07-13] Radiation Behaviors

[1M13] Shielding Experiment with 24 GeV Protons at CERN/CHARM

(12) Measurement and simulation of neutron attenuation through steel and concrete shielding with using activation detectors

*Noriaki Nakao¹, Toshiya Sanami², Tsuyoshi Kajimoto³, Hiroshi Yashima⁴, Robert Froeschl⁵, Davide Bozzato, Elpida Iliopoulou⁵, Angelo Infantino⁵, Eunji Lee², Takahiro Oyama² (1. Institute of Technology, Shimizu Corporation, 2. KEK, 3. Hiroshima Univ., 4. Kyoto Univ. , 5. CERN)

Keywords:CHARM, High energy accelerator, Shielding experiment, Activation detector, Neutron attenuation, Monte Carlo

A shielding experiment using activation detectors was performed at the CERN High-energy AcceleRator Mixed-field (CHARM) facility using protons of 24 GeV/c. Neutrons produced at a copper target were transmitted through various thickness of steel and concrete shields located vertically upward from the target. Benchmark calculations by Monte Carlo codes of FLUKA, PHITS and GEANT4 were also performed, and the simulated results were compared with the measured one.