Documents / Report
This Defense Intelligence Agency reference document, dated 10 March 2010, covers inertial electrostatic confinement (IEC) fusion. It was produced in FY 2009 under the DIA's Advanced Aerospace Weapon System Applications (AAWSA) program. The report focuses on work at the University of Illinois Urbana-Champaign and reviews IEC basics, experiments, theory and applications such as neutron sources, explosives detection and space propulsion. It concludes by proposing a breakeven experiment for p-11B fusion that uses a hydrogen plasma simulation.
“BEAMS”43 pages
UNCLASSIFIED//F8A 8FFHil.l1k 'JE'lii &Ilk¥ Detector Array and Analysis System The final imaging quality is determined by neutron source yield integrated over the area of coverage by the number of detectors, the detector configuration, the collimated beam size, the acquisition time, and other scan-related parameters. Scintillators such as NaI, Csl, and BGO as well as Plastic Nal (Tl) are candidates for gamma and x-ray detectors. Due to their small size, they can be used in a large array along with TOF spectrometry to provide detailed special information. Recently, UIUC staff has studied use of an advanced thick Hgb detector which appears to be particularly advantageous for this application. Hgb is a room temperature semiconductor material with an excellent stopping power and a relatively large photo-fraction for detecting high energy gamma rays. Assuming successful development, Hgb detectors would provide superior array performance. With the combined sources, the detector array receives a vast amount of information in a short scan time. To handle this flow of data most efficiently, a fuzzy logic system is employed. The development of this advanced fuzzy logic system is patterned after a methodology developed for the diagnosis of abnormal situations in nuclear reactor safety analysis. The knowledge box employs a goal tree (and/or decision tree) for representation. This system will use learning-based rules that evolve from extensive simulation tests to provide training about the simultaneous occurrence of specific elements and embedded object shapes. It will also learn to differentiate between positive and negative data by creating rules from these test runs. Materials listed early in the simulation study discussion would be employed. The advantage of this system is twofold. The broad area scan analysis is optimized for fast through-put of objects while the multiple neutron/x-ray identification reduces the probability of false identification. The fuzzy logic system will pass the integrated item or sound an alert (suspicious object in the container) automatically without human involvement. Humans will only be involved when an alert is sounded. An alert occurs for a range of positive identification of materials on to suspected identification. The multiple source detector array concept is designed to minimize items that fall into the category of "in-between" positive identification and clearance. The overall concept described here is illustrated for an airplane luggage scan in Figure 5.3. Data from the detection system (TNA, PFNA and x-ray) is processed through fuzzy logic system. If the item undergoing inspection passes this test, it continues on its way to baggage claim. If an alert is sounded, the item can either be passed through the machine for a second scan or be manually inspected, depending on the confidence level of the alert. Since the integrated system is modular, the basic components can easily be assembled in a variety of configurations for use at different facilities. An example is the extension to inspection of container ships being unloaded in port as illustrated in Figure 5.4. 52 UNCLASSIFIED/ ,'F8"1 8FFU!lit.l! l!l!il! 8111!¥
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 72 pages are in the text index: search them above, or from the library's search.