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Proceedings Paper

Radiation induced noise in x-ray imagers for high-yield inertial confinement fusion experiments
Author(s): C. Hagmann; J. Ayers; P. M. Bell; J.-L. Bourgade; D. K. Bradley; J. Celeste; C. Cerjan; S. Darbon; J. Emig; B. Felker; S. Glenn; J. Holder; N. Izumi; J. D. Kilkenny; J. Moody; K. Piston; A. Rousseau; V. A. Smalyuk; C. Sorce
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Paper Abstract

The large fluence of 14-MeV neutrons produced in high-yield inertial confinement fusion (ICF) experiments creates a variety of backgrounds in x-ray imagers viewing the implosion. Secondary charged particles produce background light by Cherenkov emission, phosphor screen excitation and possibly scintillation in the optical components of the imager. In addition, radiation induced optical absorption may lead to attenuation of the signal. Noise is also produced directly in the image recorder itself (CCD or film) via energy deposition by electrons and heavy charged particles such as protons and alphas. We will present results from CCD background measurements and compare them to Monte Carlo calculations. In addition we show measurements of luminescence and long-term darkening for some of the glasses employed in imagers.

Paper Details

Date Published: 13 September 2011
PDF: 6 pages
Proc. SPIE 8144, Penetrating Radiation Systems and Applications XII, 814408 (13 September 2011); doi: 10.1117/12.894232
Show Author Affiliations
C. Hagmann, Lawrence Livermore National Lab. (United States)
J. Ayers, Lawrence Livermore National Lab. (United States)
P. M. Bell, Lawrence Livermore National Lab. (United States)
J.-L. Bourgade, Commissariat à l'Énergie Atomique (France)
D. K. Bradley, Lawrence Livermore National Lab. (United States)
J. Celeste, Lawrence Livermore National Lab. (United States)
C. Cerjan, Lawrence Livermore National Lab. (United States)
S. Darbon, Commissariat à l'Énergie Atomique (France)
J. Emig, Lawrence Livermore National Lab. (United States)
B. Felker, Lawrence Livermore National Lab. (United States)
S. Glenn, Lawrence Livermore National Lab. (United States)
J. Holder, Lawrence Livermore National Lab. (United States)
N. Izumi, Lawrence Livermore National Lab. (United States)
J. D. Kilkenny, General Atomics (United States)
J. Moody, Lawrence Livermore National Lab. (United States)
K. Piston, Lawrence Livermore National Lab. (United States)
A. Rousseau, Commissariat à l'Énergie Atomique (France)
V. A. Smalyuk, Lawrence Livermore National Lab. (United States)
C. Sorce, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 8144:
Penetrating Radiation Systems and Applications XII
Gary P Grim; Richard C. Schirato, Editor(s)

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