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  • Title: Monte Carlo simulation of the IRSN CANEL/T400 realistic mixed neutron-photon radiation field.
    Author: Lacoste V, Gressier V, Institut de Radioprotection et de Sûreté Nucléaire.
    Journal: Radiat Prot Dosimetry; 2004; 110(1-4):123-7. PubMed ID: 15353634.
    Abstract:
    The calibration of dosemeters and spectrometers in realistic neutron fields simulating those encountered at workplaces is of high necessity to provide true and reliable dosimetric information to the exposed nuclear workers. The CANEL assembly was set-up at IRSN to produce such neutron fields. It comprises a depleted uranium shell, to produce fission neutrons, then iron and water to moderate them and a polyethylene duct. The new presented CANEL facility is used with 3.3 MeV neutrons. Calculations were performed with the MCNP4C code to characterise this mixed neutron-photon expanded radiation field at the position where calibrations are usually performed. The neutron fluence energy and the direction distributions were calculated and the operational quantities were derived from these distributions. The photon fluence and corresponding ambient dose equivalent were also estimated. Comparison with experimental results showed an overall good agreement.
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