Dresden 2011 – wissenschaftliches Programm

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AGA: Arbeitsgruppe Physik und Abrüstung

AGA 5: Nuclear Verification and Detection

AGA 5.4: Vortrag

Freitag, 18. März 2011, 12:30–13:00, MENSA Dül

(Beitrag abgesagt, contribution withdrawn) Simulation of portal monitors for the detection of illicit trafficking of anthropogenic radioactivity — •Alexander Ramseger — ZNF, Universität Hamburg, Deutschland

The estimate the room for improvement of radiation portal monitors (RPM), simulations with MCNP were conducted after measurements under field conditions. The best working detection conditions were determined studying the application of sodium-iodide and plastic scintillators in an RPM. In the scenario certain radionuclides (e.g. Cs-137) were located in cargo containers. The containers were inspected with an RPM. The radiation of the nuclides was attenuated by different types of cargo (3) filled in the containers. These cargo types were derived from statistics of US-American and German ports. Every cargo type is related to a certain amount of cargo containers imported and exported. The radiation background was simulated as well to determine the minimum detectable activities. The room for improvement was evaluated regarding the measurement time and the number of used detectors in relation to a certain amount of sufficiently inspected containers.