A low-cost high quality neutron computed tomography system

Using a new inexpensive scientific CMOS camera for astronomy, we have developed a compact minimalistic, but high-quality neutron detector with external shielding and variable field of view. The system can be fully integrated into a professional tomography system, but it can also be used for feasibility tests using a tomography controller based on a Raspberry Pi computer and cheap motion equipment. Using a matte screen and an optical light source, the system may even be used for teaching and training, and for testing the data processing chain. The considerations and details of the construction are presented. (author)