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A comparison of different neutron spectroscopy systems at the reactor facility VENUS

Vanhavere F., Vermeersch F., Chartier J-L., Itie C., Rosenstock W.; Koble T., d'Errico F. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 476(1-2), 395-399

Document type > *Article de revue

Keywords > external dosimetry, methodology, neutrons

Research Unit > LRDE (External dosimetry research laboratory)

Authors > ITIE Christian

Publication Date > 01/01/2002

Summary

The VENUS facility is a zero-power research reactor mainly devoted to studies on LWR fuels. Localised high-neutron rates were found around the reactor, with a neutron/gamma dose equivalent rate ratio as high as three. Therefore, a study of the neutron dosimetry around the reactor was started some years ago. During this study, several methods of neutron spectroscopy were employed and a study of individual and ambient dosemeters was performed. A first spectrometric measurement was done with the IPSN multisphere spectrometer in three positions around the reactor. Secondly, the ROSPEC spectrometer from the Fraunhofer Institut was used. The spectra were also measured with the bubble interactive neutron spectrometer. These measurements were compared with a numerical simulation of the neutron field made with the code TRIPOLI-3. Dosimetric measurements were made with three types of personal neutron dosemeters: an albedo type, a track etch detector and a bubble detector. (C) 2002 Elsevier Science B.V. All rights reserved.

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