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Application of Nuclear Material Tracking System to nuclear materials control.

机译：核材料跟踪系统在核材料控制中的应用。

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This paper briefly reviews the design concept of the Nuclear Material Tracking System, which is called NTRAK. Subsequently, it provides preliminary estimates of NTRAK detection capability for selected situations and outlines how NTRAK can be used to defend against the insider adversary attempting to steal special nuclear material (SNM). The NTRAK is a special assembly of gamma radiation detectors. The feature of NTRAK which makes it unique is its ability to direction-find and triangulate the position of localized sources of gamma radiation. This capability allows the nuclear safeguards system designer to develop material control procedures based on the position or motion of detected material. This capability was not previously available, because detection systems were unable to determine the direction from the detectors to the nuclear material being monitored. Other features of NTRAK that make it useful for nuclear material control include its abilities to (1) detect SNM at significant ranges from the detectors, (2) verify material quantity, (3) detect theft material traveling piggyback on authorized material, and (4) provide defense in depth against the adversary insider attempting to steal SNM. (ERA citation 15:009462)

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