强流重离子加速器中由于质子束流损失引起的次级辐射场计算研究

摘要

The second radiation field outside the vacuum tube caused by proton beam loss in high intensity heavy‐ion accelerator facility (HIAF) with Monte Carlo method was calculated .The energy of proton beam is within 50 MeV to 12 GeV .The basic problems such as second particle yield ,energy spectrum and angular distribution were also discussed .T hese results are beneficial to selecting the detector type and its location and determining its dynamic range for beam loss detector ,as well as to building the beam loss monitor system .Furthermore ,they are meaningful in some way for the radia‐tion protection of accelerator .%本文利用蒙特卡罗方法计算了强流重离子加速器中质子能量在50 M eV～12 GeV能量范围内由于束流损失引起的真空管壁外的次级辐射场，分别就次级粒子的产额、能谱及角分布等方面进行了基本研究。本文的研究结果在束流损失探测器的选择、安装位置以及动态范围的确定上有着重要的参考价值，对于束流损失监测系统的建立有着极为重要的意义。同时，对于加速器的辐射防护问题也有一定的参考价值。