The shielding design of distributed X-ray tube

TANG Huaping; CHEN Zhiqiang; LI Guoyu; HE Wu; WANG Biao; LAI Sheng

doi:10.3724/j.0253-3219.2026.hjs.49.250040

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The shielding design of distributed X-ray tube

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | 更新时间：2026-02-13

- The shielding design of distributed X-ray tube
- NUCLEAR TECHNIQUES Vol. 49, Issue 2, Article number: 020201(2026)
- 作者机构：
  
  1.清华大学工程物理系北京 100084
  2.新鸿电子有限公司常州 213000
- 作者简介：
  
  TANG Huaping, male, born in 1976, graduated from Tsinghua University with a master's degree in 2002, focusing on electron linear accelerator and carbon nanotube cathode X-ray sources
  CHEN Zhiqiang, E-mail: czq@mail.tsinghua.edu.cn
- 基金信息：
  
  National Natural Science Foundation of China(12327809)
- DOI：10.3724/j.0253-3219.2026.hjs.49.250040
  CLC： TL99
- Received：23 January 2025，
  
  Revised：2025-09-01，
  
  Published：15 February 2026
- 稿件说明：
移动端阅览
唐华平,陈志强,李国宇等.新型分布式X射线管屏蔽结构研究[J].核技术,2026,49(02):020201.

TANG Huaping,CHEN Zhiqiang,LI Guoyu,et al.The shielding design of distributed X-ray tube[J].NUCLEAR TECHNIQUES,2026,49(02):020201.
唐华平,陈志强,李国宇等.新型分布式X射线管屏蔽结构研究[J].核技术,2026,49(02):020201. DOI： 10.3724/j.0253-3219.2026.hjs.49.250040. CSTR： 32193.14.hjs.CN31-1342/TL.2026.49.250040.

TANG Huaping,CHEN Zhiqiang,LI Guoyu,et al.The shielding design of distributed X-ray tube[J].NUCLEAR TECHNIQUES,2026,49(02):020201. DOI： 10.3724/j.0253-3219.2026.hjs.49.250040. CSTR： 32193.14.hjs.CN31-1342/TL.2026.49.250040.

摘要

不同于传统单焦点X射线管的结构特征，分布式多焦点X射线管的辐射防护和屏蔽设计需要开展针对性研究。本文采用蒙特卡罗模拟计算方法对分布式多焦点X射线管的辐射场和屏蔽结构进行模拟和研究，模拟计算结果表明分布式多焦点X射线源具有线源特性，提出了各屏蔽面特别是沿焦点分布方向采用均匀厚度的屏蔽体设计方法。通过模拟各屏蔽面在不同屏蔽厚度下的漏剂量率水平，设计了一款各面分别为5~6 mm等厚的铅屏蔽结构并与X射线管装配，在阳极高压160 kV、阳极电流15 mA条件下，开展漏剂量率测试与屏蔽性能评估。结果表明，对新型分布式X射线管，在各屏蔽面特别是焦点分布方向上采用均一厚度的屏蔽设计是可行的；各点位的实际测量与蒙特卡罗模拟计算结果偏差小于25%，偏小为主，一致性较好；漏剂量率较大的点位在前下中部和后下中部，分别为2.4 μGy·h

-1

和2.92 μGy·h

-1

，顶底和左右的漏剂量率分别低于2 μGy·h

-1

和1 μGy·h

-1

；X射线管采用各面均匀厚度的屏蔽结构后，各点位的漏剂量率均满足低于5 μGy·h

-1

的漏剂量率限值要求。

Abstract

Background

Different from traditional single-focus X-ray tubes

distributed X-ray tubes with multiple focal spots require targeted research on radiation protection and shielding design.

Purpose

This study aims to design and validate an effective shielding structure for distributed X-ray tube with uniform thickness to ensure radiation safety.

Methods

Firstly

Monte Carlo simulation was performed to analyze the radiation field characteristics of a 45-focal-spot distributed X-ray tube operating at 160 kV anode voltage and 15 mA anode current. Then

the leakage dose rates were calculated for lead shielding thicknesses ranging from 1 mm to 6 mm on all shielding surfaces. Finally

a shielding structure with uniform thickness of 5~6 mm on each surface was designed and assembled with the X-ray tube for experimental validation.

Results

The simulation results show that the distributed X-

ray source exhibits line-source characteristics. The designed shielding structure with uniform thickness of 5~6 mm lead on each surface achieves leakage dose rates below 5 μGy·h

-1

at all measurement points. The deviation between simulation and actual measurements is consistently below 25%

with most measured values being lower than simulated ones. The highest leakage rates of 2.4 μGy·h

-1

and 2.92 μGy·h

-1

occur at the front lower middle and rear lower middle positions

respectively

which is consistent with the line-source characteristics and reflection target structure.

Conclusions

The uniform thickness shielding design proposed in this study is feasible and effective for distributed X-ray tubes. The Monte Carlo simulation method can reliably guide the shielding structure design

and all measurement points meet the radiation protection requirement of leakage dose rate below 5 μGy·h

-1

关键词

Keywords

references

唐华平 . 分布式X射线源的发展历史和最新进展 [J ] . 真空电子技术 , 2023 ( 6 ): 1 – 9 . DOI: 10.16540/j.cnki.cn11-2485 http://dx.doi.org/10.16540/j.cnki.cn11-2485 .

TANG Huaping . History and recent advances of distributed X-ray sources [J ] . Vacuum Electronics , 2023 ( 6 ): 1 – 9 . DOI: 10.16540/j.cnki.cn11-2485 http://dx.doi.org/10.16540/j.cnki.cn11-2485 .

金鑫 , 张思远 , 李亮 , 等 . 一种基于双平面扫描方式的双能静态CT系统 [J ] . CT理论与应用研究 , 2020 , 29 ( 1 ): 31 – 37 . DOI: 10.15953/j.1004-4140.2020.29.01.04 http://dx.doi.org/10.15953/j.1004-4140.2020.29.01.04 .

JIN Xin , ZHANG Siyuan , LI Liang , et al . A dual-energy stationary CT system based on dual-plane scanning mode [J ] . Computerized Tomography Theory and Applications , 2020 , 29 ( 1 ): 31 – 37 . DOI: 10.15953/j.1004-4140.2020.29.01.04 http://dx.doi.org/10.15953/j.1004-4140.2020.29.01.04 .

Puett C , Inscoe C , Lee Y Z , et al . Phantom-based study exploring the effects of different scatter correction approaches on the reconstructed images generated by contrast-enhanced stationary digital breast tomosynthesis [J ] . Journal of Medical Imaging , 2018 , 5 ( 1 ): 1 . DOI: 10.1117/1.jmi.5.1.013502 http://dx.doi.org/10.1117/1.jmi.5.1.013502 .

Schwoebel P R , Boone J M , Shao J . Studies of a prototype linear stationary X-ray source for tomosynthesis imaging [J ] . Physics in Medicine and Biology , 2014 , 59 ( 10 ): 2393 – 2413 . DOI: 10.1088/0031-9155/59/10/2393 http://dx.doi.org/10.1088/0031-9155/59/10/2393 .

Park J , Jung J , Gupta A P , et al . Multi-beam X-ray sources with carbon nanotube emitter for tomosynthesis system [J ] . Proceedings of SPIE , 2020 , 11312 : 113122E . DOI: 10.1117/12.2550142 http://dx.doi.org/10.1117/12.2550142 .

Tan C J , Tang C X , Huang W H , et al . Beam simulation and experiment of multi-focal spot electron Gun for distributed X-ray sources [J ] . Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2019 , 920 : 43 – 49 . DOI: 10.1016/j.nima.2018.11.039 http://dx.doi.org/10.1016/j.nima.2018.11.039 .

张利 , 陈旎 , 曾德高 . 不同方法对 X 射线机房的屏蔽优化分析 [J ] . 中国卫生产业 , 2015 , 12 ( 15 ): 79 – 82 .

ZHANG Li , CHEN Ni , ZENG Degao . Different methods of X-ray room shielding optimization analysis [J ] . China Health Industry , 2015 , 12 ( 15 ): 79 – 82 .

郑琳子 . 工业X射线探伤室辐射屏蔽计算方法探讨 [J ] . 工业安全与环保 , 2020 , 46 ( 11 ): 89 – 92 . DOI: 10.3969/j.issn.1001-425X.2020.11.022 http://dx.doi.org/10.3969/j.issn.1001-425X.2020.11.022 .

ZHENG Linzi . Study on the radiation shielding calculation method for industrial X-ray radiography room [J ] . Industrial Safety and Environmental Protection , 2020 , 46 ( 11 ): 89 – 92 . DOI: 10.3969/j.issn.1001-425X.2020.11.022 http://dx.doi.org/10.3969/j.issn.1001-425X.2020.11.022 .

刘睿 , 于华伟 , 祝倩 , 等 . X射线密度测井屏蔽体的蒙特卡罗模拟研究 [J ] . 核技术 , 2024 , 47 ( 8 ): 080202 . DOI: 10.11889/j.0253-3219.2024.hjs.47.080202 http://dx.doi.org/10.11889/j.0253-3219.2024.hjs.47.080202 .

LIU Rui , YU Huawei , ZHU Qian , et al . Monte Carlo simulation analysis of X-ray density logging shields [J ] . Nuclear Techniques , 2024 , 47 ( 8 ): 080202 . DOI: 10.11889/j.0253-3219.2024.hjs.47.080202 http://dx.doi.org/10.11889/j.0253-3219.2024.hjs.47.080202 .

朱忠华 , 罗威 , 柴凡超 , 等 . 医疗诊断X射线场的MC模拟及复合屏蔽材料优化设计 [J ] . 东华理工大学学报(自然科学版) , 2019 , 42 ( 2 ): 169 – 172 . DOI: 10.3969/j.issn. 1674-3504.2019.02.010 http://dx.doi.org/10.3969/j.issn.1674-3504.2019.02.010 .

ZHU Zhonghua , LUO Wei , CHAI Fanchao , et al . MC simulation of medical diagnostic X-rays and optimization design of composite shielding materials [J ] . Journal of East China University of Technology (Natural Science) , 2019 , 42 ( 2 ): 169 – 172 . DOI: 10.3969/j.issn.1674-3504.2019.02.010 http://dx.doi.org/10.3969/j.issn.1674-3504.2019.02.010 .

Yang H W , Xun T , GAO J M , et al . X-ray shielding estimations for rep-rate high power microwave accelerators [J ] . High Power Laser and Particle Beams , 2018 , 30 ( 7 ): 073005 . DOI: 10.11884/HPLPB201830. 170532 http://dx.doi.org/10.11884/HPLPB201830.170532 .

王研 , 刘鑫 , 黄万霞 , 等 . 线焦斑X射线源成像 [J ] . 物理学报 , 2016 , 65 ( 21 ): 219501 . DOI: 10.7498/aps.65.219501 http://dx.doi.org/10.7498/aps.65.219501 .

WANG Yan , LIU Xin , HUANG Wanxia , et al . Line focal X-ray source imaging [J ] . Acta Physica Sinica , 2016 , 65 ( 21 ): 219501 . DOI: 10.7498/aps.65.219501 http://dx.doi.org/10.7498/aps.65.219501 .

聂星辰 , 李佳 , 赵平辉 , 等 . 深穿透屏蔽计算中MCNP减方差技巧应用及比较 [J ] . 核电子学与探测技术 , 2016 , 36 ( 7 ): 729 – 733 . DOI: 10.3969/j.issn.0258-0934.2016.07.016 http://dx.doi.org/10.3969/j.issn.0258-0934.2016.07.016 .

NIE Xingchen , LI Jia , ZHAO Pinghui , et al . Application and comparison of MCNP variance reduction techniques for deep penetration shielding calculation [J ] . Nuclear Electronics Detection Technology , 2016 , 36 ( 7 ): 729 – 733 . DOI: 10.3969/j.issn.0258-0934.2016.07.016 http://dx.doi.org/10.3969/j.issn.0258-0934.2016.07.016 .

Tang H P , Lai S , Li G Y , et al . Research on the characteristics of radiation field of multi-beam X-ray source [J ] . Radiation Detection Technology and Methods , 2026 , 10 : s41605 - 026 -00642-z. DOI: 10.1007/s41605-026-00642-z http://dx.doi.org/10.1007/s41605-026-00642-z .

唐华平 , 陈志强 , 何武 , 等 . 160 kV碳纳米管阴极分布式X射线管研制及应用探讨 [J ] . 真空电子技术 , 2024 ( 4 ): 26 – 32 . DOI: 10.16540/j.cnki.cn11-2485/tn.2024.04.06 http://dx.doi.org/10.16540/j.cnki.cn11-2485/tn.2024.04.06 .

TANG Huaping , CHEN Zhiqiang , HE Wu , et al . Development and application of a 160 kV distributed X-ray tube based on carbon nanotube cathodes [J ] . Vacuum Electronics , 2024 ( 4 ): 26 – 32 . DOI: 10.16540/j.cnki.cn11-2485/tn.2024.04.06 http://dx.doi.org/10.16540/j.cnki.cn11-2485/tn.2024.04.06 .

李伟伟 , 王立强 . 反射式X射线管阳极钨靶的模拟优化设计 [J ] . 真空电子技术 , 2023 ( 4 ): 26 – 31 . DOI: 10.16540/j.cnki.cn11-2485/tn.2023.04.05 http://dx.doi.org/10.16540/j.cnki.cn11-2485/tn.2023.04.05 .

LI Weiwei , WANG Liqiang . Simulation optimization design of tungsten anode target in reflection type X-ray tubes [J ] . Vacuum Electronics , 2023 ( 4 ): 26 – 31 . DOI: 10.16540/j.cnki.cn11-2485/tn.2023.04.05 http://dx.doi.org/10.16540/j.cnki.cn11-2485/tn.2023.04.05 .

赵扬 . 基于MCNP方法的不同材料X射线谱分布模拟 [J ] . 材料科学 , 2023 , 13 ( 12 ): 1095 – 1101 . DOI: 10.12677/ms.2023.1312122 http://dx.doi.org/10.12677/ms.2023.1312122 .

ZHAO Yang . Simulation of X-ray fluorescence spectrum distribution in different materials based on monte carlo method [J ] . Material Sciences , 2023 , 13 ( 12 ): 1095 – 1101 . DOI: 10.12677/ms.2023.1312122 http://dx.doi.org/10.12677/ms.2023.1312122 .

项安 , 梁鲁 , 陈瑞焘 . X射线管足跟效应的蒙特卡罗模拟与分析 [J ] . 核技术 , 2016 , 39 ( 6 ): 060202 . DOI: 10.11889.0253-3219.2016.hjs.39.060202 http://dx.doi.org/10.11889.0253-3219.2016.hjs.39.060202 .

XIANG An , LIANG Lu , CHEN Ruitao . Monte Carlo simulation and analysis of X-ray tube's heel effect [J ] . Nuclear Techniques , 2016 , 39 ( 6 ): 060202 . DOI: 10.11889.0253-3219.2016.his.39.060202 http://dx.doi.org/10.11889.0253-3219.2016.his.39.060202 .

刘川凤 , 李德红 , 郝光辉 , 等 . 蒙卡方法对新型移动式低能X射线剂量特性研究 [J ] . 中国测试 , 2024 , 50 ( 9 ): 174 – 180 . DOI: 10.11857/j.issn.1674-5124.2022070134 http://dx.doi.org/10.11857/j.issn.1674-5124.2022070134 .

LIU Chuanfeng , LI Dehong , HAO Guanghui , et al . Research on the dosimetric characterize of the new mobile low energy X ray based on Monte Carlo [J ] . China Measurement & Test , 2024 , 50 ( 9 ): 174 – 180 . DOI: 10.11857/j.issn.1674-5124.2022070134 http://dx.doi.org/10.11857/j.issn.1674-5124.2022070134 .

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