Characteristic analysis of a photon converter in a medical LINAC using GEANT4
Medical LINACs (Linear Accelerators) use high energy photon beams to treat deeply located tumors.Generally, neutrons are produced by photonuclear reactions in the head of a medical LINAC using photon beams over 8 MV.Neutrons with high relative biological effectiveness and high permeability can cause many problems in terms of radiation protection.The threshold energy of photons producing neutrons in the head of a medical LINAC is 13.06 MV (Aluminum), 13.38 MV (Iron), 8.06 MV (Gold), and 7.41 MV (Tungsten).In this paper, we aim to analyze the characteristics of a photon converter in a medical LINAC using GEANT4 (Geometry and Tracking).For this, the photon and neutron spectrums of the optimized photon converter with tungsten were simulated with 2-24 MeV electron beams, and the ratio of photons with energies over 7.41 MV was analyzed.
photon converter photon target medical LINAC GEANT4
Junho Ko Beom Yeong Kim Yoon Sang Kim
School of Computer Science and Engineering, Korea University of Technology and Education,Cheonan, Re School of Computer Science and Engineering, Korea University of Technology and Education,Cheonan, Re
国际会议
The 28th International Conference on Vibroengineering (第28届国际振动工程会议)
北京
英文
256-259
2017-10-19（万方平台首次上网日期，不代表论文的发表时间）