| 练德幸,张震,张庆召,张奇,朱卫国,梁婧,侯长松.蒙特卡罗方法在质子重离子加速器治疗场所屏蔽计算中的应用[J].中华放射医学与防护杂志,2016,36(8):634-638 |
| 蒙特卡罗方法在质子重离子加速器治疗场所屏蔽计算中的应用 |
| Monte Carlo method for proton and heavy ion treatment room shielding calculation |
| 投稿时间：2016-03-18 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.08.016 |
| 中文关键词: 质子重离子加速器 屏蔽计算 蒙特卡罗方法 |
| 英文关键词:Proton and heavy ion accelerator Shielding calculation Monte Carlo method |
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| 中文摘要: |
| 目的 利用蒙特卡罗方法建立质子重离子加速器治疗场所的屏蔽计算模型,为治疗场所的屏蔽设计提供可靠的计算方法。方法 采用基于蒙特卡罗方法的FLUKA程序建立质子重离子治疗场所的屏蔽计算模型,模拟质子重离子加速器治疗场所辐射场的分布,通过对质子重离子加速器治疗场所的检测,验证计算模型。结果 FLUKA程序模拟计算结果与现场检测结果具有较好的符合性。结论 FLUKA程序建立的质子重离子加速器治疗场所屏蔽计算模型能够模拟质子重离子产生的辐射场。基于FLUKA程序建立的屏蔽计算模型,质子重离子治疗场所屏蔽设计应根据加速器最高可达的束流强度及能量进行计算。在质子和重离子加速器运行时的治疗室辐射场中,中子对剂量当量的贡献是主要的,因此,屏蔽设计中应重点考虑中子的屏蔽。 |
| 英文摘要: |
| Objective To use Monte Carlo method to build a shielding calculation model for the proton and heavy ion treatment room, and to provide a reliable calculation method for shielding design.Methods A Monte Carlo-based FLUKA code was adopted to build the shielding calculation model for the proton and heavy ion treatment room, and to simulate the radiation field distribution in the proton and heavy ion treatment room. The calculation model was verified through the radiation detection around the proton and heavy ions treatment room. Results The FLUKA code-based simulation results were consistent with the radiation detection. Conclusions The shielding calculation model based on FLUKA code can simulate the radiation field from proton and heavy ions. Among the secondary particles, secondary neutrons are the dominant component and the main concern of accelerator shielding design. In shielding calculation, the emphasis should be put on both beam intensity and energy. |
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