PROBLEM TO BE SOLVED: To provide a neutron generation target device capable of improving an intensity of proton beams by sufficiently removing heat of a thermal load of a target material.SOLUTION: A neutron generation target device 3 comprises: a target material 9 which is irradiated with proton beams 7 and generates neutrons and a liquid metal outgoing path 16 and a liquid metal incoming path 17 which are provided at an opposite side of a surface of the target material 9 to be irradiated with the proton beams 7 and in which a liquid metal 13 flows. The target material 9 is made thinner than the range of the proton beams 7 and set to such thickness that energy equal to or more than threshold energy that generates neutrons with the liquid metal 13 can be applied to the liquid metal 13.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】ターゲット材の熱負荷を十分に除熱することで、陽子ビームの強度を高めることが可能な中性子発生標的装置を提供する。【解決手段】実施形態によれば、中性子発生標的装置3は、陽子ビーム7の照射を受けて中性子を発生するターゲット材9と、ターゲット材9の陽子ビーム7の照射を受ける面と反対側に設けられ、液体金属13を流動させる液体金属往路16,液体金属復路17と、を備える。また、ターゲット材9の厚さは、陽子ビーム7の飛程よりも薄く、かつ液体金属13で中性子を発生させる閾値エネルギー以上のエネルギーを液体金属13に与えられる厚さにする。【選択図】図1
