High Intensity Neutron Source

9320458贝莱斯这项SBIR第二阶段提案旨在解决开发一种新型的、密封的14 MeV(或2.5 MeV)中子源的问题，这种中子源可以在高输出通量下长时间运行。强流脉冲放电(IPD)中子源使用简单的冷阴极离子发生器和分布式离子引出几何结构，以200keV的能量向氚加载的靶发射高比例的原子重离子。能量在14 MeV范围内的中子是通过D-T(T(D，n)4He)聚变反应产生的；SBIR第一阶段项目论证了IPD中子源概念的基本可行性，该项目包括离子束实验和概念设计开发。第二阶段将通过建造和运行200千伏的IPD实验室原型中子源系统来完成可行性论证。该项目包括：(1)离子发生器的优化；(2)密封式200千伏IPD中子源的设计和组装；(3)氢中子源的表征；(4)用氢操作和测量D-D反应产生的2.5 MeV中子通量(可由此推算出14 MeV通量)；以及(5)寿命试验，目标是在D-T中子通量为5x10 12n/秒(比商业密封源提供的通量高50倍)和通量密度为3x10 10n/cm2-sec的条件下进行300小时的寿命试验。***

9320458 Bayless This SBIR Phase II proposal addresses the problem of developing a novel, sealed, source of 14 MeV (or 2.5 MeV) neutrons which can operate at high output flux with long life. The Intense Pulsed Discharge (IPD) neutron source uses a simple cold-cathode ion generator and a distributed ion extraction geometry to deliver a high fraction of atomic deuterium ions at energies of 200 keV to a tritium-loaded target. Neutrons with energies in the range of 14 MeV are generated through D-T (T(D, n)4 He) fusion reactions; 2.5 MeV deuterium-loaded target. The basic feasibility of the IPD neutron source concept was demonstrated in a SBIR Phase I project that included ion beam experiments and conceptual design development. Phase II will complete the feasibility demonstration by constructing and operating a 200 kV laboratory prototype IPD neutron source system. This project includes: (1) optimization of the ion generator; (2) design and assembly of a sealed 200 kV IPD neutron source; (3) source characterization with hydrogen; (4) operation with deuterium and measurement of the 2.5 MeV neutron flux resulting from D-D reactions (the 14 MeV flux can be projected from this); and (5) life testing with the goal of operational life of 300 hours under conditions representative of a D-T neutron flux of 5x10 12 n/sec (50 times greater than available with commercial sealed sources) and a flux density of 3x10 10 n/cm2-sec. ***