Benito D C, McKenzie A L
H H Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL.
Br J Radiol. 2006 Nov;79(947):912-7. doi: 10.1259/bjr/94993761. Epub 2006 Jul 19.
Charts to assist in linear accelerator bunker design have been produced using the Monte Carlo framework, Geant4. These charts assess the amount of forward scatter produced at different angles to the beam axis by concrete and steel barriers irradiated by 6 MV and 10 MV photon beams at normal incidence. These new charts complement existing charts of broad-beam transmission through walls. This is because the existing charts give no indication of the amount of scatter emerging at large angles from the beam axis, for example, towards the maze entrance.
已使用蒙特卡罗框架Geant4制作了用于辅助直线加速器掩体设计的图表。这些图表评估了6兆伏和10兆伏光子束垂直入射时，混凝土和钢屏障在与束轴不同角度产生的前向散射量。这些新图表补充了现有的宽束通过墙壁的透射图表。这是因为现有图表没有给出从束轴大角度出现的散射量的指示，例如，朝向迷宫入口的散射量。
