Skip to main content
SpringerLink
Log in

Optimal design of coded aperture used for Z-Pinch driven fusion neutron imaging

  • Article
  • Published:
Science China Technological Sciences Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Nugent K A, Lutherdavies B. Application of penumbral imaging to thermonuclear neutrons. J Appl Phys, 1985, 58: 2508–2515

    Article  Google Scholar 

  2. Ress D, Lerche R A, Ellis R J, et al. Neutron imaging of laser fusion-targets. Science, 1988, 241: 956–958

    Article  Google Scholar 

  3. Disdier L, Rouyer A, Wilson D C, et al. High-resolution neutron imaging of laser imploded DT targets. Nucl Instrum Meth A, 2002, 489: 496–502

    Article  Google Scholar 

  4. Merrill FE, Bower D, Buckles R, et al. The neutron imaging diagnostic at NIF (invited). Rev Sci Instrum, 2012, 83: 10D317

  5. Disdier L, Rouyer A, Lantuejoul I, et al. Inertial confinement fusion neutron images. Phys Plasmas, 2006, 13: 0563175-1-6

  6. Rochau G A, Derzon M S, Fehl D, et al. Modeling a one-dimensional bremsstrahlung and neutron imaging array for use on Sandia’s Z machine. Rev Sci Instrum, 1999, 70: 549–552

    Article  Google Scholar 

  7. Fittinghoff D N, Bower D E, Hollaway J R, et al. One-dimensional neutron imager for the Sandia Z facility. Rev Sci Instrum, 2008, 79: 10E530

  8. Leeper R J, Ruiz C L, Chandler G A, et al. ZR neutron diagnostic suit. In: The Fifth International Conference on Inertial Fusion Sciences and Applications (IFSA2007). J Physics: Conf, 2008, 112: 032076

    Google Scholar 

  9. Chen YW, Yamanaka M, Miyanaga N, et al. Three-dimensional reconstruction of laser-imploded targets using URA coded aperture cameras. Opt Commun, 1989, 71: 249–255

    Article  Google Scholar 

  10. Ueda T, Fujioka S, Nozaki S, et al. A uniformly redundant imaging array of penumbral apertures coupled with a heuristic reconstruction for hard x-ray and neutron imaging. Rev Sci Instrum, 2010, 81: 073505-1-5

  11. Jia Q G, Hu H S, Zhang F, et al. Design, modeling and reconstruction method research of a 14.1 MeV neutron imaging system suitable for low yield Z-Pinch diagnosis. Ann Nucl Energy, 2013, 60: 412–419

    Article  Google Scholar 

  12. Ress D. Design of thick apertures for high-resolution neutron penumbral imaging. IEEE T Nucl Sci, 1990, 37: 155–157

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

    QingGang Jia, HuaSi Hu, FengNa Zhang, DongMing Wang & Guang Hu

  2. State Environmental Protection Administration (SEPA), Nuclear and Radiation Safety Centre, Beijing, 100082, China

    XiangYang Zheng & YueLei Wu

  3. Research Center of Laser Fusion, China Academy of Engineering Physics, Sichuan, 621900, China

    TianKui Zhang

Authors
  1. QingGang Jia
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. HuaSi Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. XiangYang Zheng
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. FengNa Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. DongMing Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Guang Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. TianKui Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. YueLei Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to HuaSi Hu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Jia, Q., Hu, H., Zheng, X. et al. Optimal design of coded aperture used for Z-Pinch driven fusion neutron imaging. Sci. China Technol. Sci. 58, 1289–1293 (2015). https://doi.org/10.1007/s11431-015-5807-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11431-015-5807-2

Keywords

Search

Navigation