A compact D-D fast neutron generator system was developed with an emphasis on imaging applications. It is equipped with an electron cyclotron resonance microwave ion source, an electric field method electron suppression electrode, and a rotating beam target. The design, mechanical assembling, and initial performance of the system is presented in this work. Electrostatics and charged particle tracing simulations were employed to dimension components in the vacuum system and estimate the size of the ion beam spot on the target surface. Stable operation of the neutron generator was possible with accelerating potentials of up to −120 kV and an estimated averaged ion beam current of around 0.5 mA. At these conditions, the neutron yield was estimated to 6 $\cdot$ 10⁷ s⁻¹ based on a combination of detailed Monte Carlo MCNP6 models and the ambient dose rate reading of an LB6411 neutron probe. The neutron emitting spot size was compared to the ion beam spot size and experimentally determined with an attenuating edge technique to be between 1.7 and 2.6 mm. With these neutron yield and emitting spot size values, the system compares favorably with commercially available neutron generators, and this context is also presented.

开发了紧凑型DD快速中子发生器系统，重点是成像应用。它配备有电子回旋共振微波离子源，电场法电子抑制电极和旋转束靶。这项工作介绍了系统的设计，机械组装和初始性能。静电和带电粒子跟踪模拟用于确定真空系统中组件的尺寸，并估计目标表面上离子束斑点的大小。中子发生器可以稳定运行，加速电位可达-120 kV，估计的平均离子束电流约为0.5 mA。在这些条件下，中子产率估计为6$\cdot$10 ⁷ s ^-1是基于详细的蒙特卡洛MCNP6模型和LB6411中子探针的环境剂量率读数的组合。将中子发射光斑尺寸与离子束光斑尺寸进行比较，并通过衰减边缘技术实验确定其在1.7到2.6 mm之间。具有这些中子产率和发射点尺寸值，该系统可与市售中子发生器相媲美，并且也介绍了这种情况。