Potential Improvements for the One-Dimensional Imager of Neutrons at the Sandia Z Facility

Technical Report · Mon Mar 26 00:00:00 EDT 2018

DOI:https://doi.org/10.2172/1438803· OSTI ID:1438803

Fittinghoff, D. N. ^[1]; May, M. J. ^[1]; Ruiz, C. L. ^[2]; Ampleford, D. ^[2]; Vaughan, J. ^[2]; Volegov, P. ^[3]; WIlde, C. H. ^[3]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Understanding the neutron source shape is critical for improving Magnetized Liner Inertial Fusion (MagLIF) implosions at the Sandia Z machine. Neutron source-shape measurements for MagLIF are, however, challenging due to the yields, extended axial source regions, x-ray backgrounds and physical shock waves produced by MagLIF sources. Initial tests of a slit neutron imager for 1- dimensional neutron imaging along the axial dimension of MagLIF implosions have shown that a rolled-slit aperture and CR-39 plastic detector can image the neutron production along the axial dimension. In this whitepaper, we suggest straightforward improvements to the neutron imager design that will allow significantly improved signal-to-noise performance.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1438803
• Report Number(s): LLNL-TR-748542
• Country of Publication: United States
• Language: English

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