Monte Carlo validation of the irradiator parameters of the Portuguese gamma irradiation facility after its replenishment |
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| Authors: | Luis Portugal João Cardoso Carlos Oliveira |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, Shaanxi Province, China;2. Department of Management Engineering, Qiqihar Institute of Engineering, Qiqihar 161005, Heilongjiang Province, China;1. Health Physics Division, Pakistan Institute of Nuclear Science & Technology, Nilore, Islamabad 45650, Pakistan;2. Department of Physics & Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, Nilore, Islamabad 45650, Pakistan;1. University of Wisconsin-Madison, School of Medicine and Public Health, 1111 Highland Avenue Rm 1005, Madison, WI 53705, USA;1. Department of Physics, University of Malaya, Kuala Lumpur, Malaysia;2. School of Engineering, Taylor’s University, 47500 Subang Jaya, Selangor, Malaysia;3. Flexilicate Sdn. Bhd., University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Clinical Oncology Unit, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia;5. Department of Physics, University of Surrey, Guildford, Surrey, UK;6. Sunway University, Institute for Health Care Development, 46150 Petaling Jaya, Malaysia;1. Centro de Desenvolvimento da Tecnologia Nuclear/Comissão Nacional de Energia Nuclear (CDTN/CNEN), Campus da UFMG, Pampulha, CEP 31270-901 Belo Horizonte, MG, Brazil;2. Universidade Estadual de Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Km 16 Rodovia Ilhéus-Itabuna, CEP 45662-000, Ilhéus, Brazil;3. Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil |
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| Abstract: | In December 2003 the irradiator of the Portuguese 60Co irradiation facility, UTR, was replenished. Monte Carlo simulation studies were used to characterize the facility. Comparison of simulation results with experimental measurements were useful in estimating where the source elements were positioned and what the total activity was. For this purpose the MCNPX code was used. From the experimental point of view ionization chambers and PMMA dosemeters were used.The results indicate that the geometry of the irradiator used for simulation studies shows a shift on the vertical dimension relative to the actual geometry of approximately 8 cm, but with reduced influence on the irradiation process. Considering the uncertainties of the experimental and simulated approaches the activity of the irradiator stated by supplier has been confirmed. |
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