Characterization of the DD-neutron source for the 80 degrees beam line of the Fusion Neutronics Source (FNS)

Kondo, Keitaro; Ochiai, Kentaro; Kutsukake, Chuzo; Konno, Chikara  

In order to utilize the d-D neutron source with a titanium deuteride target of the FNS facility for fusion neutronics researchs, the specification of the d-D neutron source was investigated. The characteristic of neutrons produced by the d-D reaction was described based on the reaction kinematics and the target assembly of the accelarator was detailedly modeled for the MCNP calculation. In order to validate the MCNP model, the angular distribution of the neutron strength was measured with the foil activation method. The measured reaction rates were well predicted by the MCNP calculation and the validity of the present model was confirmed. Based on the model, a MCNP source term was prepared for usual analysis calculations of experiments with DD neutrons.