Author: Anderson, S.G.
Paper Title Page
MOPIK112 High Average Power Deuteron Beam Dynamics 798
 
  • R.A. Marsh, G.G. Anderson, S.G. Anderson, D.L. Bleuel, M.L. Crank, P. Fitsos, D.J. Gibson, M. Hall, M.S. Johnson, B. Rusnak, J.D. Sain, R. Souza, A. Wiedrick
    LLNL, Livermore, California, USA
 
  Funding: This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344
Lawrence Livermore National Lab (LLNL) is developing an intense, high-brightness fast neutron source to create sub-mm-scale resolution neutron radiographs and images. A pulsed 7MeV, 300μA average-current commercial deuteron accelerator will produce an intense source (1011 n/s/sr at 0 deg) of fast neutrons (10MeV) using a novel neutron target with a small (1.5mm diameter) beam spot size to achieve high resolution. A highly flexible multi-accelerator beamline has been developed allowing for the use of both 4MeV and 7MeV RFQ/DTL deuteron accelerators. TRACE3D has been used to model the beam transport and design the quadrupole lattice and results will be presented including iterated design within beamline mechanical constraints, sensitivities, and multiple use of the magnets. Because of the high power density of such a tightly focused, modest-energy ion beam, intercepting beam diagnostics are extremely challenging, motivating novel concepts and extensions of current techniques to higher average power densities. Full duty factor beamline diagnostics will be discussed including charge, position, emittance via beam-induced fluorescence, and a full power beam dump and Faraday cup.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK112  
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WEOBB3 Advancement of an Accelerator-Driven High-Brightness Source for Fast Neutron Imaging 2533
 
  • B. Rusnak, O. Alford, G.G. Anderson, S.G. Anderson, D.L. Bleuel, J.A. Caggiano, M.L. Crank, S.E. Fisher, P. Fitsos, D.J. Gibson, M. Hall, D.J. Jamero, M.S. Johnson, L. Kruse, K.S. Lange, R.A. Marsh, D. P. Nielsen, J.D. Sain, R. Souza, A. Wiedrick
    LLNL, Livermore, California, USA
 
  Funding: This work performed under the auspices of the U. S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344.
Lawrence Livermore National Lab (LLNL) is building an intense, high-brightness fast neutron source to create millimeter-scale neutron radiographs and images. An intense source (1011 n/s/sr at 0 degrees) of fast neutrons (10 MeV) allows for penetrating very thick, dense objects while preserving the ability to create good image contrast in low density features within the object and maintaining high detector response efficiency. Fast neutrons will be produced using a pulsed 7 MeV, 300 microamp average-current commercial ion accelerator that will deliver deuteron bunches to a 3 atmosphere deuterium gas cell target to produce neutrons by the D(d, n)3He reaction. Due to the high power density of such a tightly focused, modest-energy ion beam, the transport, controls, diagnostics, and in particular the neutron production gas target and beam stop approaches present significant engineering challenges. Progress and status on the building and early commissioning of the lab-scale demonstration machine shall be presented.
 
slides icon Slides WEOBB3 [2.654 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEOBB3  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)