[2E11-15] Nuclear Data for Transmutation

[2E12] Study on accuracy improvement of fast-neutron capture reaction data of long-lived MA for development of nuclear transmutation systems

(2)Development of a neutron beam filter system at ANNRI in J-PARC

*Gerard Rovira Leveroni¹, Tatsuya Katabuchi², Osamu Iwamoto¹, Atsushi Kimura¹, Shoji Nakamura¹, Nobuyuki Iwamoto¹, Shunsuke Endo¹, Kazushi Terada², Yu Kodama², Hideto Nakano² (1. JAEA, 2. Tokyo Tech)

Keywords:J-PARC, ANNRI, double-bunch, Time-of-flight measurement, Neutron filter, PHITS, fast neutron energy

The double-bunch mode of the J-PARC facility introduces serious ambiguities in the neutron induced cross-section measurement in the fast neutron energy region. The neutron filtering technique is applied in the ANNRI beamline in order to produce quasi-monoenergetic neutron beams. In this work, different filter configurations with Fe and Si were tested and their performance as neutron filter is presented.