Introduction of an Electronic Van Module for Use in MCNP

R.J. McConn Jr; E.R. Siciliano; and J.E. Schweppe (Pacific Northwest National Lab)

A detailed theoretical model of an average-sized, privately-owned vehicle is created for use in the MCNP radiation transport software. This model is constructed to simulate the shielding effects that such a vehicle would have on a small, but finite radioactive source located within or beneath the vehicle. It is based on the geometry of a Ford Econoline van, with the specific component dimensions representing a composite of the E-150/250/350 models for the model year 2000. The model development objective is to include, with sufficient detail, all the structural features of a realistic van that would affect detection of photon and neutron radiation. Accordingly, the undercarriage, which offers the greatest amount of shielding intrinsic to the vehicle, is described in a high level of detail. This presentation provides an introduction to the van model components that are modeled and gives the appropriate reference information. Potential uses of this van model are covered as is the historical reason for choosing the Ford Econoline van. *Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by Battelle under Contract DE-AC06-76RLO 1830.

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