Experimental study on domestic C-band miniaturized accelerator
-
摘要: 为了在国产化配套条件下,开展C波段小型化加速器整机技术研究,中国工程物理研究院应用电子学研究所在研制出了多种C波段小型化驻波加速管的基础上,建立了以国产零部件(磁控管、环形器、高压电源等)为主要构件的C波段加速器X射线源整机系统,并进一步利用该加速器X射线源整机系统作为测试平台,开展了大功率热测实验工作。在热测实验中,按照国标《GB/T 20129-2015无损检测用电子直线加速器》规定的测试原理和方法,测试了加速器的主要性能指标:利用钢衰减法测试了加速器的能量、利用“三明治”测试了加速器的焦点尺寸等。最终的测试结果表明,加速器焦点尺寸约为1.2 mm,加速器的能量在3~4 MeV范围可实现连续可调,20 min内加速器的剂量率波动小于±3%。该研究结果表明,国内C波段小型化加速器整机配套环境和整机性能已经基本上可以满足当前部分能量段的小型化加速器整机系统的研制和使用需求。Abstract: To carry out research on the overall technology of C-band miniaturized accelerators under localization conditions, the Institute of Applied Electronics of the Chinese Academy of Engineering Physics has developed various C-band miniaturized standing wave accelerator tubes. At the same time, a C-band accelerator X-ray source system with mainly domestic components (magnetron, ring resonator, high-voltage power supply, etc.) has been established, and further high-power hot test experiments have been carried out using the accelerator as a testing platform. In the hot test experiment, the main performance indicators of the accelerator were tested according to the testing principles and methods specified in the national standard “GB/T 20129-2015 Electron Linear Accelerator for Non-destructive Testing”. The energy of the accelerator was tested using the steel attenuation method, and the focal size of the accelerator was tested using the “sandwich” method. The final test results indicate that the accelerator focal size is approximately 1.2 mm, and the accelerator’s energy can be continuously adjusted within the range of 3-4 MeV. The dose rate fluctuation of the accelerator within 20 minutes is less than ± 3%. The research results indicate that the supporting environment and overall performance of domestic C-band miniaturized accelerator can basically meet the development and use requirements of miniaturized accelerator systems.
-
Key words:
- C-band /
- accelerator /
- X-ray source /
- domestication /
- miniaturization
-
表 1 测焦点尺寸的“三明治”法测试结果
Table 1. Test results of “sandwich” method for measuring focus size
position distance from target/mm spot diameter/mm position 1 300 1.5 position 2 500 1.8 position 3 800 2.1 -
[1] Shintake T, Matsumoto H, Akasaka N, et al. The first wakefield test on the C-band choke-mode accelerating structure[C]//Proceedings of the 1999 Particle Accelerator Conference. 1999: 3411-3413. [2] Tanabe E, Fineberg Y, Matsumoto H, et al. Medical applications of C-band accelerator technologies[R]. 1998: 627-629. [3] 姚充国. 电子直线加速器[M]. 北京: 科学出版社, 1986Yao Chongguo. Electron linear accelerator[M]. Beijing: Science Press, 1986 [4] 周文振, 章向阳, 丁书琳, 等. C波段全密封加速管的研制[J]. 强激光与粒子束, 1999, 11(3):347-349Zhou Wenzhen, Zhang Xiangyang, Ding Shulin, et al. The development for c-band whole sealed vacuum accelerating tuber[J]. High Power Laser and Particle Beams, 1999, 11(3): 347-349 [5] 柏伟. C波段驻波加速管的物理设计与实验研究[D]. 北京: 中国工程物理研究院, 2005Bai Wei. Physical design and experimental study on a C-band standing wave accelerating tube[D]. Beijing: China Academy of Engineering Physics, 2005 [6] 靳清秀, 童德春, 陶小魁, 等. C波段9 MeV驻波电子直线加速管设计[J]. 核技术, 2008, 31(3):178-180 doi: 10.3321/j.issn:0253-3219.2008.03.005Jin Qingxiu, Tong Dechun, Tao Xiaokui, et al. Development of accelerating structure of 9 MeV C-band electron linac[J]. Nuclear Techniques, 2008, 31(3): 178-180 doi: 10.3321/j.issn:0253-3219.2008.03.005 [7] 杨誉, 杨京鹤, 余国龙, 等. C波段6 MeV轴耦合驻波加速管的研制[J]. 原子能科学技术, 2022, 56(12):2773-2779 doi: 10.7538/yzk.2022.youxian.0179Yang Yu, Yang Jinghe, Yu Guolong, et al. Development of c-band 6 MeV on-axis coupled standing wave accelerating tube[J]. Atomic Energy Science and Technology, 2022, 56(12): 2773-2779 doi: 10.7538/yzk.2022.youxian.0179 [8] 刘勇涛, 胡银富, 盛兴. C波段6 MeV驻波加速管的仿真设计[J]. 真空电子技术, 2018(2):31-36Liu Yongtao, Hu Yinfu, Sheng Xing. Design of a C-band 6 MeV linear accelerating tube[J]. Vacuum Electronics, 2018(2): 31-36 [9] 牛焕焕, 郝聪慧, 万知之. C波段10 MeV驻波电子直线加速管的优化仿真[J]. 真空电子技术, 2023(3):45-49Niu Huanhuan, Hao Conghui, Wan Zhizhi. Optimized simulation of a 10 MeV c-band standing wave linear accelerating tube[J]. Vacuum Electronics, 2023(3): 45-49 [10] Bai Wei, Xu Zhou, Jin Xiao, et al. Physical design and cooling test of C-band standing wave accelerating tube[J]. Chinese Physics, 2006, 15(2): 319-323. doi: 10.1088/1009-1963/15/2/015 -