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Proceedings Paper

Design and implementation of a gated-laser entrance hole imaging diagnostic (G-LEH-1) at NIF
Author(s): Nathan E. Palmer; Hui Chen; Jarom Nelson; Sukhdeep Heerey; Ken Piston; Mai Thao; Marilyn Schneider; Perry Bell; Dave Bradley; John Porter; John Stahoviak; Marcos Sanchez; Liam Claus
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Paper Abstract

Gated x-ray images through the laser entrance hole (LEH) of a hohlraum can provide critical information for ICF experiments at the National Ignition Facility (NIF), such as the size of the LEH vs time, the growth of the gold bubble1, and the change in the brightness of inner beam spots due to time-varying cross beam energy transfer2. Incorporating a high-speed multi-frame CMOS x-ray imager developed by Sandia National Laboratories3,4 into the existing Static X-ray Imager (SXI) diagnostic5 at NIF, the new Gated LEH Imager #1 (G-LEH-1) diagnostic is capable of capturing two to four LEH images per shot on its 1024x448 pixel photo detector array, with integration times as low as 2 ns per frame. The design of this diagnostic and its implementation on NIF will be presented.

Paper Details

Date Published: 31 August 2015
PDF: 13 pages
Proc. SPIE 9591, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion IV, 959106 (31 August 2015); doi: 10.1117/12.2189124
Show Author Affiliations
Nathan E. Palmer, Lawrence Livermore National Lab. (United States)
Hui Chen, Lawrence Livermore National Lab. (United States)
Jarom Nelson, Lawrence Livermore National Lab. (United States)
Sukhdeep Heerey, Lawrence Livermore National Lab. (United States)
Ken Piston, Lawrence Livermore National Lab. (United States)
Mai Thao, Lawrence Livermore National Lab. (United States)
Marilyn Schneider, Lawrence Livermore National Lab. (United States)
Perry Bell, Lawrence Livermore National Lab. (United States)
Dave Bradley, Lawrence Livermore National Lab. (United States)
John Porter, Sandia National Labs. (United States)
John Stahoviak, ABQfpga (United States)
Marcos Sanchez, Sandia National Labs. (United States)
Liam Claus, Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 9591:
Target Diagnostics Physics and Engineering for Inertial Confinement Fusion IV
Jeffrey A. Koch; Gary P. Grim, Editor(s)

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