Numerical modeling of nonintrusive inspection systems

James M. Hall; James F. Morgan; Kenneth E. Sale

doi:10.1117/12.171253

28 March 1994 Numerical modeling of nonintrusive inspection systems

James M. Hall, James F. Morgan, Kenneth E. Sale

Proceedings Volume 2092, Substance Detection Systems; (1994) https://doi.org/10.1117/12.171253
Event: Substance Identification Technologies, 1993, Innsbruck, Austria

Abstract

A wide variety of nonintrusive inspection systems have been proposed in the past several years for the detection of hidden contraband in airline luggage and shipping containers. The majority of these proposed techniques depend on the interaction of radiation with matter to produce a signature specific to the contraband of interest, whether drugs or explosives. L-Division of the LLNL has developed a unique expertise in the combined numerical and experimental modeling of these types of systems. Based on our experience, we are convinced that detailed numerical modeling provides a much more accurate estimate of the actual performance of complex experiments than simple analytical modeling. Furthermore, the construction of detailed numerical prototypes allows experimenters to explore the entire region of parameter space available to them before committing their ideas to hardware. This sort of systematic analysis has often lead to improved experimental designs and reductions in fielding costs. L-Division has developed an extensive suite of computer codes to model proposed experiments and possible background interactions. These codes allow us to simulate complex radiation sources, model 3D system geometries with `real world' complexity, specify detailed elemental distributions, and predict the response of almost any type of detector. In this work, we will present several examples illustrating the use of these codes in modeling experimental systems at LLNL and discuss their potential usefulness in evaluating nonintrusive inspection systems.

Citation Download Citation

James M. Hall, James F. Morgan, and Kenneth E. Sale "Numerical modeling of nonintrusive inspection systems", Proc. SPIE 2092, Substance Detection Systems, (28 March 1994); https://doi.org/10.1117/12.171253

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available