Aperture design for the third neutron and first gamma-ray imaging systems for the National Ignition Facility

Fatherley, V. E.; Fittinghoff, D. N.; Hibbard, R. L.; Jorgenson, H. J.; Martinez, J. I.; Oertel, J. A.; Schmidt, D. W.; Waltz, C. S.; Wilde, C. H.; Volegov, P. L.

doi:10.1063/1.5039328

Title: Aperture design for the third neutron and first gamma-ray imaging systems for the National Ignition Facility

Journal Article · 10 October 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5039328 · OSTI ID:1525725

^[1];

^[2]; Hibbard, R. L. ^[2]; Jorgenson, H. J. ^[1]; Martinez, J. I. ^[1]; Oertel, J. A. ^[1]; Schmidt, D. W. ^[1]; Waltz, C. S. ^[2]; Wilde, C. H. ^[1]; Volegov, P. L. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The current construction of a new nuclear-imaging view at the National Ignition Facility will provide a third line of sight for hotspot and cold fuel imaging and the first dedicated line of sight for 4.4-MeV γ-ray imaging of the remaining carbon ablator. To minimize the effort required to hold and align apertures inside the vacuum chamber, the apertures for the two lines of sight will be contained in the same array. We discuss the system requirements for neutron and γ-ray imaging and the resulting aperture array design.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344; AC52-06NA25396

OSTI ID:: 1525725

Report Number(s):: LLNL-JRNL--774860; 966930

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

References (8)

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Review of the National Ignition Campaign 2009-2012 Lindl, John; Landen, Otto; Edwards, John Physics of Plasmas, Vol. 21, Issue 2 https://doi.org/10.1063/1.4865400	journal	February 2014
Demonstration of a time-integrated short line of sight neutron imaging system for inertial confinement fusion Simpson, R.; Christensen, K.; Danly, C. Review of Scientific Instruments, Vol. 86, Issue 12 https://doi.org/10.1063/1.4938543	journal	December 2015
Design of the polar neutron-imaging aperture for use at the National Ignition Facility Fatherley, V. E.; Barker, D. A.; Fittinghoff, D. N. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4960314	journal	August 2016
Combined neutron and x-ray imaging at the National Ignition Facility (invited) Danly, C. R.; Christensen, K.; Fatherley, V. E. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4962194	journal	October 2016
A liquid VI scintillator cell for fast-gated neutron imaging Geppert-Kleinrath, Verena; Freeman, Matthew S.; Hurlbut, Charles R. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039362	journal	October 2018
Design of the aperture array for neutron imaging from the north pole of the National Ignition Facility Fatherley, V. E.; Barker, D. A.; Fittinghoff, D. N. SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.2238657	conference	September 2016
System design of the NIF Neutron Imaging System North Pole Fatherley, Valerie E.; Ayers, Jay J.; Barker, David A. Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274365	conference	September 2017

Cited By (2)

Optimizing neutron imaging line of sight locations for maximizing sampling of the cold fuel density in inertial confinement fusion implosions at the National Ignition Facility Batha, S. H.; Volegov, P. L.; Fatherley, V. E. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038815	journal	October 2018
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas Frenje, J. A. Plasma Physics and Controlled Fusion, Vol. 62, Issue 2 https://doi.org/10.1088/1361-6587/ab5137	journal	January 2020

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