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RIKEN Compact Neutron Systems with Fast and Slow Neutrons

机译：具有快中子和慢中子的RIKEN紧凑中子系统

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RIKEN has developed accelerator-driven compact pulse neutron systems for practical use in industrial applications and non-destructive infrastructure inspection that are called RIKEN accelerator-driven compact neutron source (RANS) and RANS2. The visualization method for corrosion, the corrosion's related water movement in painted steels, the analytical method for the quantitative estimation of the water movement in painted steels, a neutron engineering diffractometer for texture evaluation, and the austenite volume fraction estimation of iron and steel have been successfully observed through slow neutron applications. For fast neutron imaging applications, a pixel imaging detector for fast neutrons with energy levels above 1 MeV has been developed and used to produce images of a steel bar and an air gap through 30 cm of concrete. The salt concentrations of 4-cm and 5-cm thick mortar blocks have been measured, and a correlation diagram was obtained for a density of up to 1 kg/m3. RANS2 is now undergoing further development, particularly for outdoor use, as the first test model of an on-site compact neutron system. In this development, RANS2 is equipped with a 2.49-MeV three-fold proton accelerator with an RFQ of 200 MHz.
机译：RIKEN开发了用于工业应用和无损基础设施检查的加速器驱动的紧凑型脉冲中子系统，称为RIKEN加速器驱动的紧凑型中子源（RANS）和RANS2。腐蚀的可视化方法，油漆中腐蚀相关的水运动，油漆中水运动定量估计的分析方法，用于质地评估的中子工程衍射仪以及钢铁的奥氏体体积分数估算方法通过慢速中子应用成功观察到。对于快速中子成像应用，已经开发了一种能级高于1 MeV的快速中子像素成像探测器，并用于产生钢筋和30 cm混凝土中的气隙的图像。测量了4厘米和5厘米厚的砂浆块的盐浓度，并获得了密度高达1 kg / m3时的相关图。作为现场紧凑中子系统的第一个测试模型，RANS2现在正在进一步开发，特别是在室外使用。在此开发中，RANS2配备了2.49 MeV三重质子加速器，RFQ为200 MHz。

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