French comparison exercise with the rotating neutron spectrometer, 'ROSPEC'
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, (252Cf+D2 O)/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.
Mots clés
americium 241
californium 252
lead
article
controlled study
dosimetry
France
neutron radiation
radiation detector
radiation energy
spectrometer
standardization
thermal analysis
Dose-Response Relationship
Radiation
Equipment Design
Equipment Failure Analysis
Neutrons
Radiation Dosage
Radioisotopes
Radiometry
Rotation
Sensitivity and Specificity
Spectrum Analysis