高能质子加速器治疗系统应用中的环境安全问题  

The Problems of Environmental Safety for Applicationof High Energy Proton Accelerator Therapy System

作　　者：刘原中[1] 唐鄂生[2] 李建平[2] 顾洪坤[3] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]中国科学院高能物理研究所,北京100039 [3]北京市辐射环境管理中心,北京100037

出　　处：《原子能科学技术》2004年第z1期192-196,共5页Atomic Energy Science and Technology

摘　　要：通过对1台能量为235MeV的质子加速器治疗系统的辐射安全分析,阐明了高能质子加速器运行时可能带来的一些环境安全问题。分析表明,高能质子加速器运行可能带来的主要环境影响有:中子和γ射线引起的辐射剂量、空气的活化、设备冷却水的活化、土壤(及地下水)的活化、加速器结构材料的活化以及臭氧等有害气体的产生等。计算结果表明,只要整个系统的设计具有良好的屏蔽系统、通风系统以及防止人员误入强辐射区的安全联锁系统,高能质子加速器治疗系统的运行对周围公众的安全是能得到保障的。The environment safety problems resulted from the operation of high energy proton accelerator are described based on the analysis of radiation safety for a 235 MeV proton accelerator therapy system in the paper. The primary environmental impact resulted from the operation of high energy proton accelerator is as follows: 1)radiation dose from neutron and γ-ray to men; 2) the activation of air; 3) the activation of component cooling water of accelerator; 4) the activation of soil ( and groundwater ); 5) the activation of material of accelerator components; 6) producing harmful gases ( such as O_(3),NO_(2) and HNO_(3)). The calculated results show that the safety of men around the accelerator can be ensured during high energy proton accelerator therapy system operation, so long as it has fine design and construction for shield system ,and ventilation system ,and safety interlock system which it is used to protect person going incidentally into the high radiation area.

关 键 词：质子加速器 医疗系统 环境影响 

分 类 号：X837[环境科学与工程—环境工程]