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Radiation Protection Dosimetry 2005 115(1-4):324-328; doi:10.1093/rpd/nci028
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Published by Oxford University Press 2005.

French comparison exercise with the rotating neutron spectrometer, ‘ROSPEC’

P. Crovisier1, B. Asselineau2, G. Pelcot2, L. Van-Ryckeghem2, A. Cadiou3, H. Truffert3, J. E. Groetz4,* and M. Benmosbah4

1 CEA/DSTA/SPR, Centre de Valduc, 21120 Is sur Tille, France
2 IRSN, Laboratoire de Métrologie et de Dosimétrie des Neutrons (LMDN), 13115 Saint Paul Lez Durance, France
3 COGEMA, Service de Prévention et de Radioprotection, 50444 Beaumont, Hague, France
4 Laboratoire de Microanalyses Nucléaires, Université de Franche-Comté, 25030 Besançon, France

* Corresponding author: jean-emmanuel.groetz{at}univ-fcomte.fr

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, (252Cf+D2O)/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.


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M. Benmosbah and B. Asselineau
Energy and fluence calibration of the neutron spectrometer ROSPEC at the IRSN AMANDE facility between 70 keV and 4.5 MeV
Radiat Prot Dosimetry, July 1, 2009; 135(3): 154 - 161.
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