GAMOS/GEANT4 simulation and comparison study of X-ray narrow-spectrum series at the national Secondary Standard Dosimetry Laboratory of Morocco.

Autor: Al-Tuweity J; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco. Electronic address: jaltuweity@uit.ac.ma., Sadiq Y; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco; SSDL, National Center of Radiation Protection (CNRP), Ministry of Health, Salé, Morocco., Mouktafi A; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco., Arce P; Medical Applications Unit, Division of Scientific Instrumentation, Department of Technology, CIEMAT, Madrid, Spain., Fathi I; Laboratory of Sciences and Health Technologies, Higher Institute of Health Sciences, Université Hassan 1, Settat, Morocco., Mohammed M; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco., Azougagh M; ENSET, Université Mohammed V, Rabat, Morocco., Alibrahmi EM; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco., Boukhal H; Faculty of Science, Université Abdelmalek Saadi, Tétouan, Morocco., Chakir EM; LPMS, Faculty of Sciences, University of Ibn Tofail, Kenitra, Morocco.
Jazyk: angličtina
Zdroj: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2021 Sep; Vol. 175, pp. 109789. Date of Electronic Publication: 2021 May 27.
DOI: 10.1016/j.apradiso.2021.109789
Abstrakt: This study aimed to simulate the X-ray Irradiator narrow-spectrum series and compare the results with experimental and recommended values in ISO standards. X-Ray beam qualities of N-40 to N-300 were established experimentally at the national Secondary Standard Dosimetry Laboratory (SSDL) of Morocco in purpose of calibrating radiation protection- level. The variations between the first half-value layer (1 st HVL) and the second (2 nd HVL) for experimental were within 5%. Also, homogeneity coefficients h were mostly between 0.75 and 1 according to ISO. GAMOS Monte Carlo code was used to simulate the radiation quality of narrow-spectrum series between N-40 to N-150. All 1 st HVL, 2 nd HVL, and h simulation values were compare with experimental and ISO values. In MC codes and GAMOS, there is no direct way to generate the X-ray spectrum if we do not have details of the X-ray tube geometry, dimensions and materials. Therefore, Institute of Physics and Engineering in Medicine report number 78 was used to generate the X-ray spectrums in purpose to test this method accuracy. The simulation results for the 1 st HVL and 2 nd HVL showed a good agreement with experimental data and with ISO 4037-1:1996 given values. Also, the comparison results showed that most of the homogeneity coefficients are within the ISO standard range.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: