2016年秋の大会

講演情報

一般セッション

II. 放射線工学と加速器・ビーム科学 » 202-3 中性子源・中性子工学

[1O01-03] 小型中性子源とその応用

2016年9月7日(水) 14:45 〜 15:35 O会場 (くるめりあ六ツ門 セミナー室)

座長:前畑 京介(九大)

15:15 〜 15:30

[1O03] Modified Design of Mobile 3.95 MeV X-band Linac Neutron Source

*Jean-Michel Antoine Bereder1, Yuki Mitsuya1, Mitsuru Uesaka1, Yoshichika Seki2 (1.NEM, The University of Tokyo, 2.JAEA J-PARC Center)

キーワード:Neutron Source, Mobile Electron Linear Accelerator, Social Infrastructure Inspection, Moisture Inspection

The existing non-destructive inspection method using high energy X-ray for social infrastructures is aimed to detect the inner flaw in concrete structure and iron rods. In addition to the conventional method, development of an innovative inspection system using mobile neutron source to perform neutron backscatter moisture detection to measure moisture distribution in concrete structure is progressing, in order to estimate the corrosion probability distribution of iron rods.
We developed the mobile linac driven neutron source using (γ, n) reaction of beryllium and succeeded in moisture detection experiment. In the new design, we downsized the target by reducing its neutron and gamma ray shield. The neutron flux has increased by a factor of 10 compared to the former design so that the estimated detection time is shortened to about 1 minute, and the target weight is reduced to 70kg, making it much more manageable in actual use.