Development of the first-generation associated particle tube
-
摘要: 研究伴随粒子成像技术(API)，就必须研制带有伴随粒子探测器的伴随粒子靶管，因而对D-T反应及其产物中子与α粒子的关系、伴随α粒子探测器及其输出电路等关键技术进行了研究。综合考虑不同类型的D-T中子发生器，制作了一个相对可靠、安全的D-T中子发生器。通过实验测试了多阳极光电倍增管(PSPMT)及其两种输出电路的性能，证明了SCDC输出电路路具有比DPC输出电更小的畸变和更高的位置分辨。实验验证了第一代带伴随粒子探测器的伴随粒子靶管的设计方案的可行性，测得伴随α粒子与中子在时间和位置上的关联，中子角度不确定度为7°，与理论相符。Abstract: In order to study the associated particle imaging technique, it is necessary to develop the first-generation associated particle tube with the associated particle detector. Therefore, the key techniques, such as D-T generator, the relationship between neutrons and alpha particles in D-T reaction, associated particle detector and readout circuit, are studied. The performance of the position sensitive photomultiplier (PSPMT)and two readout circuits are tested in the experiment and design of the first-generation associated particle tube with the associated particle detector. It is proved that the SCDC readout circuit has smaller distortion and higher position resolution than the DPC readout circuit. The association between alpha particles and neutrons in time and position is measured, and the neutron angle uncertainty is about 7°, which is consistent with the theory ethical value.
-
Key words:
- associated particle imaging /
- associated particle detector /
- tube
-
图 1 中子和α粒子在COM与LAB的出射角度
Figure 1. Exit angle of neutron and alpha particles in COM and LAB
图 6 离散位置读出电路读出法的电阻网络[11]
Figure 6. Resistor network for discretized position readout circuit
表 1 两种粒子在铝膜中的模拟结果
Table 1. Simulation results of two kinds of particles in aluminum film
particle type energy/MeV target range/μm error/μm D 0.13 Al 1.18 0.12 4He 3.5 Al 13.1 0.26 
下载: 导出CSV
-
[1] Beyerle A, Hurley J P. Design of an associated particle imaging system[J]. Nucl Instr and Meth A, 1990, 299: 458-460. doi: 10.1016/0168-9002(90)90825-Q [2] Beyerle A, Durkee R, Headley G, et al. Associated particle imaging[C]//Nuclear Science Symposium and Medical Imaging Conference. 1991. [3] Ussery L E, Hollas C L. Design and development of the associated-particle three-dimensional imaging technique[R]. LA-12847-MS, 1995. [4] Herman B P M W. National Nuclear Data Center: A worldwide user facility[J]. Nuclear Physics News, 2012, 22(3): 23-26. doi: 10.1080/10619127.2012.683724 [5] Grogan B R. The development of a parameterized scatter removal algorithm for nuclear materials identification system imaging[D]. Knoxville: The University of Tennessee, 2010: 17-19. [6] Henry A F, Scott C C, Moorthy S. Nuclear reactor analysis[J]. Physics Today, 1977, 24(6): 2566-2567. [7] Cates J W. Investigation of time and position resolved Alpha transducers for multi-modal imaging with a DT neutron generator[J]. 2013, 13: 18-20. [8] Chichester D L, Lemchak M, Simpson J D. The API 120: A portable neutron generator for the associated particle technique[J]. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2005, 241(1/4): 753-758. [9] Datasheet: Hamamatsu tube assembly H13700[EB/OL]. http://www.hamamatsu.com/20180812. [10] 赵翠兰, 漆玉金, 施亮, 等. 多阳极位置灵敏光电倍增管位置读出电路的设计实现[J]. 原子核物理评论, 2010, 27(1): 63-67. https://www.cnki.com.cn/Article/CJFDTOTAL-HWDT201001010.htmZhao Cuilan, Qi Yujin, Shi Liang, et al. Design and implementation of simplified readout circuits for multi-anode position-sensitive photomultiplier tubes. Nuclear Physics Review, 2010, 27(1): 63-67 https://www.cnki.com.cn/Article/CJFDTOTAL-HWDT201001010.htm [11] Siegel S, Silverman R W, Shao Y, et al. Simple charge division readouts for imaging scintillator arrays using a multi-channel PMT[J]. IEEE Trans Nuclear Science, 1996, 43(3): 1634-1641. doi: 10.1109/23.507162 -
点击查看大图
图(13) / 表(1)
计量
- 文章访问数: 1089
- HTML全文浏览量: 161
- PDF下载量: 101
- 被引次数: 0
