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French comparison exercice with the rotating neutron spectrometer, 'ROSPEC'


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Titre de la revue : Radiation Protection Dosimetry Volume : 115 N° : 1-4 Pagination : 324-328 Date de publication : 20/12/2005

Type de document > *Article de revue

Mots clés >

Unité de recherche > IRSN/DRPH/SDE/LMDN

Auteurs > ASSELINEAU Bruno, BEN MOSBAH Mehdi, CADIOU A., CROVISIER Philippe, GROETZ Jean Emmanuel, PELCOT Gérard, TRUFFERT H., VAN-RYCKEGHEM Laurent

Date de publication > 20/12/2005

Résumé

The French laboratories in charge of 'neutron' dosimetry using the spectrometer 'ROSPEC', formed a working group in 2001. The participants began to study the behaviour of the instrument with a comparison exercise in broad energy neutron fields recommended by the International Organisation for Standardisation (ISO) and available at the LMDN in Cadarache. The complete version of the ROSPEC is made up of six spherical proportional counters fixed to a rotating platform. These counters cover different energy ranges which overlap each other to provide a link between the detectors, within the energy range from thermal neutrons to 4.5 MeV. The irradiation configurations chosen were ISO standard sources (252Cf, (252CfþD2O)/Cd, 241Am-Be) and the SIGMA facility. The results show that the 'thermal and epithermal' neutron fluence was widely overestimated by the spectrometer in all configurations.