MCNP calculations for container inspection with tagged neutrons

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 241; no. 1-4; pp. 831 - 834
• Main Authors: Boghen, G., Donzella, A., Filippini, V., Fontana, A., Lunardon, M., Moretto, S., Pesente, S., Zenoni, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-12-2005
• Subjects: Associated particle imaging; Cargo inspection; Civil security; Fast neutrons; Tagged neutrons; 25.40.Fq; Fast neutrons; 29.30.Kv; 89.20.Bb; Civil security; Tagged neutrons; Associated particle imaging; Cargo inspection; 28.20.−v; 89.40.−a
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2005.07.200

We are developing an innovative tagged neutrons inspection system (TNIS) for cargo containers: the system will allow us to assay the chemical composition of suspect objects, previously identified by a standard X-ray radiography. The operation of the system is extensively being simulated by using the MCNP Monte Carlo code to study different inspection geometries, cargo loads and hidden threat materials. Preliminary simulations evaluating the signal and the signal over background ratio expected as a function of the system parameters are presented. The results for a selection of cases are briefly discussed and demonstrate that the system can operate successfully in different filling conditions.