Ultraviolet imager for nuclear safeguards inspectors

E. Michael Attas; J. Dennis Chen; Gary J. Young

doi:10.1117/12.60326

1 June 1992 Ultraviolet imager for nuclear safeguards inspectors

E. Michael Attas, J. Dennis Chen, Gary J. Young

Proceedings Volume 1655, Electron Tubes and Image Intensifiers; (1992) https://doi.org/10.1117/12.60326
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

An ultraviolet imaging device has been developed for use in nuclear safeguards. The handheld device detects and amplifies a restricted portion (250 - 350 nm) of the faint Cerenkov glow produced in water around irradiated nuclear fuel stored in used-fuel pools. A 105 mm quartz objective lens, a UV-pass filter and a microchannel-plate image intensifier tube form the real- time visible-light image, which can be photographed or viewed directly through an eyepiece. Normal artificial lighting of the fuel storage bay does not interfere with the Cerenkov-light image. Anomalous fuel assemblies can be detected in the presence of normal assemblies by differences in the Cerenkov-light image. The latest version of this Cerenkov Viewing Device, the Mark IV CVD, is being used routinely by inspectors from the International Atomic Energy Agency to verify declared inventories of irradiated light-water power-reactor fuel. Its design and operation are illustrated and described in this paper, together with plans for further enhancements of the instrumentation.

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E. Michael Attas, J. Dennis Chen, and Gary J. Young "Ultraviolet imager for nuclear safeguards inspectors", Proc. SPIE 1655, Electron Tubes and Image Intensifiers, (1 June 1992); https://doi.org/10.1117/12.60326

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KEYWORDS

Inspection

Chemical vapor deposition

Ultraviolet radiation

Image intensifiers

Electrons

Visible radiation

Light sources and illumination

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