Abstract
The gamma ray attribute measurement information barrier discussion directly complements the discussion of gamma ray measurement, presented in the measurements paper by Gosnell and the general discussion of information barriers (IBs) by MacArthur. It focuses on the information barrier features applied specifically to the gamma-ray measurement and attribute analysis system. The FMTT demonstration instrument represents the second application of an IB design paradigm developed in conjunction with the Joint DOE/DoD Information Barriers Working Group (IBWG) as well as representatives from the Russian Federation's delegations to the Trilateral Initiative and meetings on the agreement for transparency at the Mayak Fissile Storage Facility (FMSF). It is also the second evolutionary step in constructing hardware to embody these jointly developed ideas. The first step was the prototype instrument developed for the Trilateral Initiative, the so-called Attribute Verification System with Information Barriers for Plutonium with Classified Characteristics utilizing Neutron Multiplicity Counting and High-Resolution Gamma-ray Spectroscopy (AVNG), that was demonstrated at Los Alamos National Laboratory in June 1999. Several improvements are evident in this second effort, and will be discussed. Improved, though this information barrier may be, it is still a prototype meant only for demonstration purposes. Its evolving specification and design are appropriately a subject for joint discussion and development. Part of that development must include creating components that the respective governments can trust enough to certify.
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