Neutron Imager for the National Ignition Facility

ORAL

Abstract

The goal of the National Ignition Campaign at the National Ignition Facility is to obtain ignition of an inertially confined fusion capsule. In this work, we describe the neutron imaging system that we are installing at the National Ignition Facility to provide information on the spatial distribution of material in the compressed capsule and any uncompressed fuel. The imager uses an array of 37 gold and tungsten apertures 20-cm long with an apex at 26.5 cm from the source to produce images in a scintillator array at 28-m. By imaging the front and back of the scintillator and gating those images with properly gated microchannel plate gated intensifiers, we expect to obtain two images: one of the primary neutrons from 13-17 MeV and one of the downscattered neutrons from 10-12 MeV. This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

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Authors

  • D.N. Fittinghhoff

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • D.E. Bower

    LLNL, Lawrence Livermore National Laboratory, Livermore CA 94550

  • B. Felker

    LLNL, Lawrence Livermore National Laboratory, Livermore CA 94550

  • M. Frank

    LLNL, Lawrence Livermore National Laboratory, Livermore CA 94550

  • J.R. Hollaway

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • D.H. Kalantar

    LLNL, Lawrence Livermore National Laboratory, Livermore CA 94550

  • J.L. Klingmann

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • R.A. Nyholm

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • B.A. Quivey

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • G.P. Roberson

    LLNL, Lawrence Livermore National Laboratory, Livermore CA 94550

  • P.B. Weiss

    Lawrence Livermore National Laboratory, Livermore CA 94550

  • R. Buckles

    NSTec, National Security Technologies, Livermore, CA 94550

  • D. Clark

    LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • D. Esquibel

    Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • V. Fatherley

    LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • G. Grim

    Los Alamos National Laboratory, LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • E. Loomis

    LANL, Los Alamos National Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • F. Merrill

    Los Alamos National Lab, LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • G. Morgan

    LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • J. Oertel

    Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • I.L. Tregillis

    Los Alamos National Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, LANL

  • C. Wilde

    Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • M. Wilke

    LANL, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545

  • D. Wilson

    LANL, Los Alamos National Laboratory, Los Alamos National Lab, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545