title: Monte Carlo studies of the Tunisian gamma irradiation facility using GEANT4 code.
abstract: This paper describes a complete Monte Carlo study of the Tunisian gamma irradiation facility (CNSTN) using the GEANT4 CERN's code. The work focused on the optimization of the absorbed dose distribution inside the irradiation cell, with and without product. For this purpose, 32 different points at the middle plane of the source rack, 29 positions along Z axis and 7 critical points, were carried out using PMMA dosimeters. Then, to achieve a given bulk density, boxes loaded with "dummy" product were used. Simulated and experimental results are compared and good agreement is observed. It is shown that Monte Carlo simulation improves process understanding, predicts absorbed dose distributions and calculates dose uniformity within product.
authors.affiliation: National Center for Nuclear Sciences and Technologies, 2020 Tunis, Tunisia. omrane.kadri@cnstn.rnrt.tn
authors.forename: O
authors.initials: O
authors.lastname: Kadri
authors.forename: F
authors.initials: F
authors.lastname: Gharbi
authors.forename: K
authors.initials: K
authors.lastname: Farah
authors.forename: K
authors.initials: K
authors.lastname: Mannai
authors.forename: A
authors.initials: A
authors.lastname: Trabelsi