均整器及辐射防护设计
周 霖1,陈 浩1,刘勇涛2,许 州1*,黄 红3
(1. 西华大学军民融合协同创新中心,四川 成都 610039;2. 西华大学理学院,四川 成都 610039;3. 四川大学原子核科学技术研
究所,四川 成都 610065)
摘 要:根据新型冠状病毒肺炎疫情的需求及血液辐照仪的技术要求,采用蒙特卡罗软件
FLUKA 对一种2.5 MeV 电子加速器X 射线血液辐照仪的均整器和辐射防护进行了设计与仿真。仿
真结果表明:均整后,照射区域内的吸收剂量率最大差异为7.6%,射线中心剂量率为均整前的
57.6%,辐照仪整机外围5 cm 处的剂量率最大为1 μSv/h ,优于血液辐照仪的使用标准;经估算,要保
证血液吸收剂量为25 Gy ,只需要照射4.5 min 。
关键词:新型冠状病毒肺炎;电子加速器;均整器;屏蔽设计;血液辐照仪
中图分类号:TH789;R197.39 文献标志码:A 文章编号:1673–159X(2020)05 − 0118 − 04
背光片
doi :10.12198/j.issn.1673 − 159X.3816
X-ray Flattening Filter and Radiation Protection Designing for 2.5
MeV Electron Linear Accelerator Used for Blood Irradiator
ZHOU Lin 1,CHEN Hao 1,LIU Yongtao 2,XU Zhou 1*,HUANG Hong 3
电力线适配器(1. Collaborative Innovation Center for Civil-Military Integration , Xihua University , Chengdu 610039 China ;
2. School of Science , Xihua University , Chengdu 610039 China ;
3. Institute of Nuclear Science and Technology , Sichuan University , Chengdu 610065 China )
Abstract: According to the current situation of the COVID-19 and the technical requirements of blood
irradiators, this paper proposes a 2.5 MeV electron accelerator X-ray blood irradiator and designs its
flatten-
ing filter and shielding structure. After detailed simulation design, the maximum difference of absorbed
消息队列实现
dose rate was about 7.6%, and the central absorbed dose rate was 57.6% as much as before. Meanwhile, the采销互联
maximum dose rate at 5 cm outside the whole irradiator was 1 μSv/h, which could fully meet the require-
ments of blood irradiator. It was estimated that only 4.5 minutes of exposure was needed to ensure the blood
exposure dose of 25 Gy.
Keywords: coronavirus disease2019(COVID-19);electron accelerator ;flattening filter ;shieldingsesedy
design ;blood irradiator
网络视频传输
收稿日期:2020 − 08 − 30
基金项目:国防科工局项目核技术应用项目(科工二司[2020] 343号)。
* 通信作者:许州(1965—),男,研究员,博士,主要研究方向为加速器物理、高功率微波。
ORCID :0000 − 0001 − 7840 − 9488 E-mail :********************
引用格式:周霖,陈浩,刘勇涛,等. 2.5 MeV 电子加速器X 射线血液辐照仪的均整器及辐射防护设计[J ]. 西华大学学报(自然科学版),
2020,39(5):118 − 121.
ZHOU Lin, CHEN Hao, LIU Yongtao, et al. X-ray Flattening Filter and Radiation Protection Designing for 2.5 MeV Electron Linear Accelerator Used for Blood Irradiator [J ]. Journal of Xihua University (Natural Science Edition ), 2020, 39(5): 118 − 121.第39 卷第5期西华大学学报(自然科学版)2020 年 9 月
Vol. 39,No. 5Journal of Xihua University (Natural Science Edition )Sep. 2020