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Design of a Collimator System of a Neutron Beam Line for Neutron-Nucleus Reaction Measurements

Koichi Kino, Fujio Hiraga, Michihiro Furusaka, Yoshiaki Kiyanagi, Masayuki Igashira, Motoharu Mizumoto, Tatsuya Katabuchi

Nuclear Technology / Volume 168 / Number 2 / November 2009 / Pages 317-321

Neutron Measurements / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Protection /

A collimator system of a neutron beam line that is used for neutron-nucleus reaction measurements has been designed. Collimators in the middle region are optimized using a Monte Carlo simulation so that the neutron dose in the shielded area is as small as possible. A collimator closest to the experimental target is designed based on several origins of neutron backgrounds studied by the simulation. The simulation data finally obtained show a favorable background level and an expected neutron beam at the target position.

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