High-level neutron coincidence counter maintenance manual

Swansen, J.E.; Collinsworth, P.R.

doi:10.2172/6057583

Cited by 4 publications

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“…The output of the OR circuit is a 50-ns-wide logic pulse that is fed to the input of the shift-register board. 56 The shift-register time-correlation logic system that we use with the detector is Model HEC-100 produced by IRT Corp.* (Fig. 36).…”

Section: A Detector Design the Detector Unit Consists Of 13mentioning

confidence: 99%

Safeguards and security progress report, January--December 1988

Smith¹,

Jaramillo²

1989

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to the Department of Energy (DOE) and Nuclear Regulatory Commission (NRC) licensee facilities. This assistance includes consultation on materials accounting problems, development of specialized techniques and instruments, and comprehensive participation in the design and implementation of advanced safeguards systems. In addition, a series of training courses in various aspects of safeguards makes the technology more accessible to those who must apply it. Part 2 treats activities aimed at the security of information and computer systems. Our focus this period was on continuing the activities of the Computer Security Center, which provides the basis for encouraging and disseminating this emerging technology, and on the development and demonstration of secure computer systems. Part 3 describes the broad development efforts essential to continuing improvements in the practice of safeguards. Although these projects are properly classified as developmental, they address recognized problems that commonly occur in operating facilities. Finally, Part 4 covers international safeguards activities, including both support to the International Atomic Erievgy Agency and bilateral exchanges. Enrichment plant safeguards, especially those concerning the Gas Centrifuge Enrichment Plant, required a significant portion of our resources. These efforts are beginning to provide substantial returns on our investment in technology transfer, not only in raising the level of safeguards effectiveness but also in benefiting from field experiences in operating environments. While most projects described in this report were sponsored by DOE Office of Safeguards and Security, safeguards-related activities that have other sponsors are reported in Part 5. The final part of this report lists titles and abstracts of Los Alamos safeguards R&D reports, technical journal articles, and conference papers that were published in 1984.

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Section: A Detector Design the Detector Unit Consists Of 13mentioning

confidence: 99%

Safeguards and security progress report, January--December 1988

Smith¹,

Jaramillo²

1989

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show abstract

“…Three variables exist in the gen-been describedin detail. [5,6] Briefly, coincidence neucons are eration of coincidence neutrons: sample mass, (ct,n) interac-emitted from a sample into a detector. The neutronsbounce tions, and multiplication, about in the polyethylene of the detector, lose energy, and are A classical limitation of coincidence counting assay has absorbedby 3Hetubes, cadmium, orpolyethylene in the detecbeen that only two independent quantities are measured: total tct.…”

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confidence: 99%