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http://dx.doi.org/10.7742/jksr.2017.11.4.197

Analysis of the Photon Beam Characteristics by Medical Linear Accelerator According to Various Target Materials using MCNP-code  

Lee, Dong-Yeon (Department of Radiation Oncology, Dongnam Inst. of Radiological & Medical Science)
Park, Eun-Tae (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Kim, Jung-Hoon (Department of Radiological Science, College of Health Sciences, Catholic University of Pusan)
Publication Information
Journal of the Korean Society of Radiology / v.11, no.4, 2017 , pp. 197-203 More about this Journal
Abstract
This study purpose is propose the basic data for selecting the optimal target material by analyzing the photon characteristics of various materials which was located in the head of medical linear accelerator. In this study, energy spectrum of 6, 15 MV photon beams were compared and analyzed for 13 target materials using MCNPX of Monte Carlo method. The mean energy for the 6 MV energy spectrum was 1.69 ~ 1.84 MeV and that for the 15 MV was 3.38 ~ 3.56 MeV, according to the target material. The flux for the 6 MV energy spectrum was $1.64{\times}10^{-5}{\sim}1.80{\times}10^{-5}{\sharp}/cm^2/e$ and that for the 15 MV was $1.76{\times}10^{-4}{\sim}1.85{\times}10^{-4}{\sharp}/cm^2/e$. The analysis shows that the average energy and flux increase with higher atomic number of the target material. Based on this study, it is possible to present the basic data about the physical characteristics of the photon, and it will be possible to select the target later considering economic, efficiency and physical aspect.
Keywords
Target; MCNPX; Energy spectrum; Mean energy; Flux;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 N. Juntong, K. Pharanphan, "The Optimized X-ray Target of Electron Linear Accelerator for Radiotherapy," JACoW of IPAC 2016, pp. 1933-1935, 2016.
2 J. K. Kim, J. H. Kim, B. K. Kim, “Energy Distribution of X-rays from Medical Linear Accelerator,” Korean Journal of Medical Physics, Vol. 2, No. 1, pp. 29-35, 1991.
3 Chibani O, MA CMC, "Photonuclear dose calculations for high-energy photon beams from Simens and Varian linacs". Medical Physics, Vol.30, No.8, pp.1990-2000, 2003.   DOI
4 Julian B, "Simulation of neutron production at a medical linear accelerator", Institute of Experimental Physics University of Hamburg, 2007.
5 Rawlinson, J.A., Islam, M.K., Galbraith, D.M., "Dose to radiation therapists from activation at high-energy accelerators used for conventional and intensity-modulated radiation therapy" Medical Physics, Vol.29, No. 4, pp.598-608, 2002.   DOI
6 S. J. An, C. L. Lee, C. H. Baek, “Monte Carlo Simulation of a Varian 21EX Clinac 6 MV Photon Beam Characteristics Using GATE6,” Journal of radiological science and technology, Vol. 39, No. 4, pp. 571-575, 2016.   DOI
7 D. Sheikh-Baghen, D. W. O. Rogers, “Monte Carlo calculation of nine megavoltage photon beam spectra using the BEAM code,” Medical Physics, Vol. 29, No. 3, pp. 391-402, 2002.   DOI
8 E. T. Park, S. J. Ko, J. H. Kim, S. S. Kang, “Evaluation of Photoneutron Energy Distribution in the Radiotherapy Room,” Journal of radiological science and technology, Vol. 37, No. 3, pp. 223-231, 2014.
9 Y. H. Kim, "Dose Distribution Calculation Using MCNPX Code in the Gamma-ray Irradiation Cell," Department of Nuclear & Energy Engineering Graduate School Cheju National University, 2008.
10 Pelowitz, Denise B., MCNPXTM User's manual version 2.5.0, Los Alamos National Laboratory, 2005.
11 Qiang Gao, Hao Zha, Huaibi Chen, "Design and Optimization of the Target in Electron Linear Accelerator," JACoW of IPAC 2013, pp. 3663-3665, 2013.
12 J. K. Baek, H. S. Jang, Y. K. Oh, “Monte Carlo Simulation of the Generation of 25 to 150 keV Photon Beams by Using GEANT4,” New Physics: Sae Mulli, Vol. 66, No. 11, pp. 1450-1456, 2016.   DOI
13 Xu Hai-Bo, Peng Xian-Ke, Chen Chao-Bin, "Monte Carlo simulation for bremsstrahlung and photoneutron yields in high-energy X-ray radiography," Chinese Physics B, Vol. 19, No. 6, 2010.
14 M. Mamtimin, F. Harmon, V. N. Starovoitova, "Sc-47 Production from Titanium Targets using Electron linacs," Applied Radiation and Isotopes 102, pp. 1-4, 2015.   DOI
15 V. N. Bhorasker, B. J. Patil, A. J. Patil et. al, "FLU KA simulation of 15 MeV linear accelerator based thermal neutron source for radiography," Indian Journal of Pure & Applied Physics, Vol. 50, pp. 814-817, 2012.
16 A. R. Lipski, L. A. Orozco, M. R. Pearson et. al, "Gold and isotopocally enriched platinium targets for the production of radioactive beams of francium," Nuclear Instruments and Methods in Physics Research A 438, pp. 217-220, 1999.   DOI
17 B. J. Patil, "Stuides on ( i ) Characterization of bremsstrahlung radiations for 6 to 18 MeV electron beam from different Z elements and ( ii ) Devleopment of neutron source using MeV pulsed electron beam and their applications," The Partial Fulfillment for the Degree of Doctor of Philosophy in Department of Physics University of Pune, 2010.
18 B. S. Park, J. H. Ahn, D. Y. Kwon, “The Effect of Photoneutron Dose in High Energy Radiotherapy,” The journal of the korean society for radiotherapeutic technology, Vol. 25, No. 1, pp. 9-14, 2013.
19 D. I. Thwaltes, J. B. Tuohy, "Back to the Future : the History and Development of the Clinical Linear Accelerator," Physics in Medicine and Biology, Vol. 51, pp. 343-362, 2006.   DOI
20 E. T. Park, "Study on the Characteristics of Photoneutron Produced in Medical Linear Accelerators," Dept. of Radiological Science, Graduate School, Catholic University of Pusan, 2015.
21 K. R. Seo, S. A. Kim, B. S. Kang, “Monte Carlo Simulation for Photon Spectrum of 6 MeV Electron Accelerator with different Target/Filter in thickness,” Journal of the Korean Society of Radiology, Vol. 9, No. 1, pp. 145-149, 2015.
22 J. O. Lee, D. H. Jeong, S. R. Mun, "Calculation of Photon Spectra from the Tungsten Target for 10 MeV Electron Beam," Korean Journal of Medical Physics, Vol. 10, No. 1, pp. 55-62, 1999.
23 J. O. Lee, D. H. Jeong, “Calculation of Energy Spectra for 6 MeV Electron Beam of LINAC Using MCNPX,” Korean Journal of Medical Physics, Vol. 17, No. 4, pp. 224-231, 2006.
24 S. S. Kang, D. K. Kweon, K. K. Kim, Radiation Equipment 2nd edition, Chunggu munhwasa, 2013.
25 S. S. Kang, Y. H. Ko, K. J. Kim, Radiation Therapeutics 3rd edition, Chunggu munhwasa, 2014.