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Large Area Solid Radiochemistry (LASR) collector at the National Ignition Facility
Author(s): Cory Waltz; Narek Gharibyan; Mike Hardy; Dawn Shaughnessy; Do Jedlovec; Cal Smith
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Paper Abstract

The flux of neutrons and charged particles produced from inertial confinement fusion experiments at the National Ignition Facility (NIF) induces measurable concentrations of nuclear reaction products in various target materials. The collection and radiochemical analysis of the post-shot debris can be utilized as an implosion diagnostic to obtain information regarding fuel areal density and ablator-fuel mixing. Furthermore, assessment of the debris from specially designed targets, material doped in capsules or mounted on the external surface of the target assembly, can support experiments relevant to nuclear forensic research. To collect the shot debris, we have deployed the Large Area Solid Radiochemistry Collector (LASR) at NIF. LASR uses a main collector plate that contains a large collection foil with an exposed 20 cm diameter surface located ∼50 cm from the NIF target. This covers ∼0.12 steradians, or about 1% of the total solid angle. We will describe the design, analysis, and operation of this experimental platform as well as the initial results. To speed up the design process 3-dimensional printing was utilized. Design analysis includes the dynamic loading of the NIF target vaporized mass, which was modeled using LS-DYNA.

Paper Details

Date Published: 24 August 2017
PDF: 7 pages
Proc. SPIE 10390, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI, 103900H (24 August 2017); doi: 10.1117/12.2272640
Show Author Affiliations
Cory Waltz, Lawrence Livermore National Lab. (United States)
Narek Gharibyan, Lawrence Livermore National Lab. (United States)
Mike Hardy, Lawrence Livermore National Lab. (United States)
Dawn Shaughnessy, Lawrence Livermore National Lab. (United States)
Do Jedlovec, Lawrence Livermore National Lab. (United States)
Cal Smith, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 10390:
Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI
Jeffrey A. Koch; Gary P. Grim, Editor(s)

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