Physical design and evaluation of a high-intensity accelerator-based D-D/D-T fusion neutron source
Physical design and evaluation of a high-intensity accelerator-based D-D/D-T fusion neutron source
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基于高强度加速器的D-D/D-T聚变中子源的物理设计与评估
DOI：
10.1140/epja/i2019-12848-5
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发表时间：
2019
影响因子：
2.7
通讯作者：
Xu D. P.
中科院分区：
文献类型：
--
作者：
Wei Z.;Han C.;Peng S. H.;Bai X. H.;Liu C. Q.;Ma Z. W.;Huang Z. W.;Zhang S. J.;Li W. M.;Yang Y.;Yao Z. E.;Wu W. S.;Zhang Y.;Lu X. L.;Wang J. R.;Su X. D.;Xu D. P.
设计了一种基于强流加速器的厚吸附靶D-D/D-T聚变中子源（ZF-400）。使用高电流微波离子源来产生大电流氘束，并且通过将氘束照射在氘吸附靶或氚吸附靶上来产生中子。根据PIC程序，整个强流D+束流传输线长度为500 cm，D+束流传输效率高达96%，各种组件可以相互匹配。在旋转靶上，D+束斑尺寸约为20.0 mm，能量为450 keV。基于热传导理论，水冷式厚吸附旋转靶可承受450 kV/50 mA的D+离子束，并确保温度低于200°C。根据多层计算模型，可以高精度地计算厚靶的中子能谱、角分布和产额。ZF-400中子发生器的中子能谱为非单能中子，中子角分布为各向异性分布，能提供强度分别为n/s（D-D）和n/s（D-T）的中子，氘核能量为450 keV/50 mA。
A high-intensity accelerator-based D-D/D-T fusion neutron source (ZF-400) with a thick adsorption target is designed with an intensity ofn/s. A high-current microwave ion source is used to produce a large current deuteron beam, and neutrons are generated by irradiating the deuteron beam on a deuterium-adsorption target or tritium-adsorption target. According to the particle-in-cell (PIC) code, the length of the whole high-current D+beam transport line is 500cm, the D+beam transfer efficiency is up to 96%, and various components can match each other. On the rotating target, the D+beam spot size is about 20.0 mm with energy of 450 keV. Based on the heat conduction theory, the thick adsorption rotating target with water-cooling can withstand the D+ions beam with 450 kV/50 mA and ensure that the temperature is less than 200°C. According to the multi-layer computing model, neutron energy spectra, angular distributions and yields for the thick target can be calculated with remarkable precision. The neutron energy spectra are non-mono-energetic neutrons for the ZF-400 neutron generator, the neutron angular distributions are anisotropic distributions, and they can provide neutrons with an intensity ofn/s (D-D) andn/s (D-T), respectively, with the deuteron of 450 keV/50 mA.