title: French comparison exercise with the rotating neutron spectrometer, 'ROSPEC'.
abstract: 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.
authors.affiliation: CEA/DSTA/SPR, Centre de Valduc, 21120 Is sur Tille, France.
authors.forename: P
authors.initials: P
authors.lastname: Crovisier
authors.forename: B
authors.initials: B
authors.lastname: Asselineau
authors.forename: G
authors.initials: G
authors.lastname: Pelcot
authors.forename: L
authors.initials: L
authors.lastname: Van-Ryckeghem
authors.forename: A
authors.initials: A
authors.lastname: Cadiou
authors.forename: H
authors.initials: H
authors.lastname: Truffert
authors.forename: J E
authors.initials: JE
authors.lastname: Groetz
authors.forename: M
authors.initials: M
authors.lastname: Benmosbah
mesh_terms: D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000592:standards; D005602:France; D009502:Neutrons; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis* / Q000592:standards; D011874:Radiometry / Q000295:instrumentation* / Q000592:standards; D012399:Rotation; D012680:Sensitivity and Specificity; D013057:Spectrum Analysis / Q000379:methods* / Q000592:standards
chemical_list: D011868:Radioisotopes