2010
DOI: 10.1590/s0103-97332010000100017
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Retrieval of GammaCell 220 irradiator isodose curves with MCNP simulations and experimental measurements

Abstract: Gamma irradiator facilities can be used in a wide range of applications such as biological and chemical researches, sterilization of medical devices and products. Dose mapping must be performed in these equipments in order to establish plant operational parameters, as dose uniformity, source utilization efficiency and maximum and minimum dose positions. The isodoses curves are measured using dosimeters or computer simulations. This work evaluates the absorbed dose in the CDTN/CNEN GammaCell Irradiation Facilit… Show more

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Cited by 9 publications
(3 citation statements)
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“…Following Rodrigues et al . 29 , aluminum and steel shells of 2 mm thickness each were implemented between the sources and the exposure chamber. The 60 Co emission spectrum was simplified to consist of two 1.25 MeV γ-rays.…”
Section: Methodsmentioning
confidence: 99%
“…Following Rodrigues et al . 29 , aluminum and steel shells of 2 mm thickness each were implemented between the sources and the exposure chamber. The 60 Co emission spectrum was simplified to consist of two 1.25 MeV γ-rays.…”
Section: Methodsmentioning
confidence: 99%
“…MCNP has been applied to a wide range of medical physics problems 73 including the modelling of medical linear accelerators, [74][75][76][77][78] and imaging systems such as radiotherapy electronic portal imaging devices (EPIDs), [79][80][81] CT 82 and PET/CT. 83 MCNP has also been used to develop models for kV intraoperative radiotherapy, 84,85 Brachytherapy, [86][87][88] proton therapy 89,90 and gamma irradiator devices 91,92 including the Leksell Gamma Knife 93,94…”
Section: Mcnpmentioning
confidence: 99%
“…One of the additional PMMA slabs of the phantom was modified to fit four alanine pellets placed with center in the corners of a 1 cm × 1 cm square in a 2.5 cm diameter circular ABS holder (see Figure 2 Cobalt-60 reference irradiations are carried out in a Gammacell -a shielded enclosure, with a number of cylindrical cobalt-60 source pencils arranged around the sample at an approximate radial distance of 10 cm and which have an approximate height of 20 cm. The irradiator is very similar to the Nordion GC-220 in design (Hefne, 2000;Rodrigues et al, 2009). The standard ABS holder containing four alanine pellets is placed inside polyether ether ketone (PEEK, C 19 H 12 O 3 ) cylinders inside an aluminium can which is able to have its temperature controlled, which is all placed at the sample position.…”
Section: Irradiation Proceduresmentioning
confidence: 99%