Optimal design of coded aperture used for Z-Pinch driven fusion
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Optimal design of coded aperture used for Z-Pinch driven fusion
- 发表刊物：
- SCIENCE CHINA Technological Sciences
- 摘要：
- 1 Institute of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;
2 State Environmental Protection Administration (SEPA), Nuclear and Radiation Safety Centre, Beijing 100082, China;
3 Research Center of Laser Fusion, China Academy of Engineering Physics, Sichuan 621900, China
[Abstract]
Currently, the neutron yield of Z-Pinch is lower than that of laser driven fusion. In the neutron imaging for this facility, the signal to noise ratio (SNR) has a significant influence on the expected spatial resolution of the reconstructed fusion core, especially in the condition of low neutron yield. In this paper, mathematical model is purposed to describe the dependence of aperture parameters on the imaging SNR. The investigation shows that the imaging SNR is closely related to the size of contrast boundary on the point spread function. According to this, a novel non-uniform redundancy penumbra apertures array is designed. In addition, the imaging performances of this novel coded aperture, penumbra aperture and ring aperture are evaluated
and compared by Monte Carlo method. The comparison shows that this novel aperture has significant advantage compared to the penumbra aperture which is commonly used for neutron imaging with low yield. The encouraging results can provide reference for the optimal design of the coded aperture used in the neutron imaging for Z-pinch driven fusion with low neutron yield.
[Keywords]
Z-pinch driven fusion, neutron imaging, coded aperture, signal to noise ratio, low neutron yield
Citation: Jia Q G, Hu H S, Zheng X Y, et al. Optimal design of coded aperture used for Z-Pinch driven fusion neutron imaging. Sci China Tech Sci, 2015, 58 (7): 1289–1293,
doi: 10.1007/s11431-015-5807-2
*Corresponding author (email: Huasi_hu@mail.xjtu.edu.cn)
© Science China Press and Springer-Verlag Berlin Heidelberg 2015
tech.scichina.com link.springer.com
- 合写作者：
- JIA QingGang1, HU HuaSi1*, ZHENG XiangYang2, ZHANG FengNa1, WANG DongMing1,et al
- 卷号：
- 58 (7)
- 页面范围：
- 1289–1293
- 是否译文：
- 否
- 发表时间：
- 2015-07-01