One dimensional imager of neutrons on the Z machine

Ampleford, David J.; Ruiz, Carlos L.; Fittinghoff, David N.; Vaughan, Jeremy D.; Hahn, Kelly; Lahmann, Brandon; Gatu-Johnson, Maria; Frenje, Johan; Petrasso, Richard; Ball, Christopher R.; Maurer, Andrew J.; Knapp, Patrick F.; Harvey-Thompson, Adam J.; Fisher, John; Alberto, Perry; Torres, Jose A.; Cooper, Gary; Jones, Brent; Rochau, Gregory A.; May, Mark J.

doi:10.1063/1.5038118

One dimensional imager of neutrons on the Z machine

Journal Article · Fri Oct 12 00:00:00 EDT 2018 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5038118· OSTI ID:1483980

^[1]; Ruiz, Carlos L. ^[1]; ^[2]; Vaughan, Jeremy D. ^[3]; Hahn, Kelly ^[1]; ^[4]; ^[4]; ^[4]; ^[4]; Ball, Christopher R. ^[1]; Maurer, Andrew J. ^[1]; ^[1]; Harvey-Thompson, Adam J. ^[1]; Fisher, John ^[1]; Alberto, Perry ^[1]; Torres, Jose A. ^[1]; Cooper, Gary ^[5]; Jones, Brent ^[1]; Rochau, Gregory A. ^[1]; May, Mark J. ^[2]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Univ. of New Mexico, Albuquerque, NM (United States)

We recently developed a one-dimensional imager of neutrons on the Z facility. The instrument is designed for Magnetized Liner Inertial Fusion (MagLIF) experiments, which produce D-D neutrons yields of ~3 × 10¹². X-ray imaging indicates that the MagLIF stagnation region is a 10-mm long, ~100-μm diameter column. The small radial extents and present yields precluded useful radial resolution, so a one-dimensional imager was developed. The imaging component is a 100-mm thick tungsten slit; a rolled-edge slit limits variations in the acceptance angle along the source. CR39 was chosen as a detector due to its negligible sensitivity to the bright x-ray environment in Z. A layer of high density poly-ethylene is used to enhance the sensitivity of CR39. Finally, we present data from fielding the instrument on Z, demonstrating reliable imaging and track densities consistent with diagnosed yields. For yields ~3 × 10¹², we obtain resolutions of ~500 μm.

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1483980

Alternate ID(s):: OSTI ID: 1507825
OSTI ID: 1438639
OSTI ID: 1477212

Report Number(s):: SAND--2018-13169J; 670012

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 89; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Modeling the one-dimensional imager of neutrons (ODIN) for neutron response functions at the Sandia Z facility Vaughan, J. D.; Ruiz, C. L.; Fittinghoff, D. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039366	journal	October 2018
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