Calculation of dose uniformity ratio in irradiation cell of GC-220 using analytical method based on multipole moment expansion‎

‎Rezaeian, ‎P‎eiman; ‎Ataenia, ‎V‎ahideh; ‎Shafiei, ‎S‎epideh

doi:10.22034/rpe.2020.57886

Document Type : Research Article

Authors

¹ Radiation Applications Research School‎, ‎Nuclear Science and Technology Research Institute‎, ‎AEOI‎, ‎PO Box 11365-3486‎, ‎Tehran‎, ‎Iran

² Physics and Accelerators Research School‎, ‎Nuclear Science and Technology Research Institute‎, ‎AEOI‎, ‎PO Box 11365-3486‎, ‎Tehran‎, ‎Iran‎

https://doi.org/10.22034/rpe.2020.57886

Abstract

‎In this paper‎, ‎dose uniformity ratio in irradiation cell of GC-220 is specifiedutilizing an analytical method based on the multipole moment expansion‎. ‎In this method‎, ‎the values of monople‎, ‎dipole and quadrupole moments for source arrangements of GC-220 are calculated by numerical integrating‎. ‎Appling these values‎, ‎the dose uniformity ratio in the irradiation cell of GC-220 is calculated equal to 1.92‎. ‎Monte Carlo simulation is applied to validate calculations‎. ‎There is a relative difference about 12% between the results obtained from the analytical calculation and Monte Carlo simulation‎, ‎which confirm the used method‎. ‎In comparison with Monte Carlo methods‎, ‎this method is not time consuming‎, ‎so‎, ‎this method can be used for the conceptual designing and the source load planning of irradiators‎.

Highlights

The dose uniformity ratio DUR is calculated using the analytical method.
The analytical method was based on multipole moment expansion.
The DUR in radiation cell of GC-220 was calculated using Monte Carlo simulations.
The dierence between values of DUR calculated by the analytical and simulation is less than 12%.
The consistency between calculations and Monte Carlo simulations validates the presented method.

Keywords

20.1001.1.26456397.2020.1.1.5.8

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Radiation Physics and Engineering

Calculation of dose uniformity ratio in irradiation cell of GC-220 using analytical method based on multipole moment expansion‎

References

References

Volume 1, Issue 1
January 2020
Pages 29-32

Calculation of dose uniformity ratio in irradiation cell of GC-220 using analytical method based on multipole moment expansion‎

References

References

Volume 1, Issue 1January 2020Pages 29-32

Volume 1, Issue 1
January 2020
Pages 29-32