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Proceedings Paper

Design of the target area for the National Ignition Facility
Author(s): Richard J. Foley; Victor P. Karpenko; Chris H. Adams; C. S. Patel; L. C. Pittenger; F. Dean Lee; T. C. Reitz; Wilthea J. Hibbard; W. R. Horton; David J. Trummer; Michael T. Tobin; Anthony E. McDonald; R. W. Wavrik; P. C. Pittman
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Paper Abstract

The preliminary design of the target area for the National Ignition Facility has been completed. The target area is required to meet a challenging set of engineering system design requirements and user needs. The target area must provide the appropriate conditions before, during, and after each shot. The repeated introduction of large amounts of laser energy into the chamber and subsequent target emissions represent new design challenges for ICF facility design. Prior to each shot, the target area must provide the required target illumination, target chamber vacuum, diagnostics, and optically stable structures. During the shot, the impact of the target emissions on the target chamber, diagnostics, and optical elements is minimized and the workers and public are protected from excessive prompt radiation doses. After the shot, residual radioactivation is managed to allow the required accessibility. Diagnostic data is retrieved, operations and maintenance activities are conducted, and the facility is ready for the next shot. The target area subsystems include the target chamber, target positioner, structural systems, target diagnostics, environmental systems, and the final optics assembly. The engineering design of the major elements of the target area requires a unique combination of precision engineering, structural analysis, opto-mechanical design, random vibration suppression, thermal stability, materials engineering, robotics, and optical cleanliness. The facility has been designed to conduct both x-ray driven targets and to be converted at a later date for direct drive experiments. The NIF has been configured to provide a wide range of experimental environments for the anticipated user groups of the facility. The design status of the major elements of the target area is described.

Paper Details

Date Published: 8 December 1997
PDF: 12 pages
Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); doi: 10.1117/12.294320
Show Author Affiliations
Richard J. Foley, Lawrence Livermore National Lab. (United States)
Victor P. Karpenko, Lawrence Livermore National Lab. (United States)
Chris H. Adams, Lawrence Livermore National Lab. (United States)
C. S. Patel, Lawrence Livermore National Lab. (United States)
L. C. Pittenger, Lawrence Livermore National Lab. (United States)
F. Dean Lee, Lawrence Livermore National Lab. (United States)
T. C. Reitz, Lawrence Livermore National Lab. (United States)
Wilthea J. Hibbard, Lawrence Livermore National Lab. (United States)
W. R. Horton, Lawrence Livermore National Lab. (United States)
David J. Trummer, Lawrence Livermore National Lab. (United States)
Michael T. Tobin, Lawrence Livermore National Lab. (United States)
Anthony E. McDonald, Sandia National Labs. (United States)
R. W. Wavrik, Sandia National Labs. (United States)
P. C. Pittman, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 3047:
Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference
Michel L. Andre, Editor(s)

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