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Proceedings Paper

Redesign of the image processing techniques used for the alignment of the LMJ amplifier section
Author(s): Laurent Hilsz; Sylvain Challois; Frédéric Nicaise; Michel Luttmann; Alain Adolf
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Paper Abstract

The laser Megajoule (LMJ) project was launched in 1995 by the French Atomic Energy Commission and is aimed at developing a facility to achieve inertial confinement fusion. The LMJ architecture is based on 176 laser beamlines. To provide these 176 high-powered beams when required for subsequent operations, one of the main issues consists in reliably aligning the laser amplifier sections. This paper provides an overview of the image processing techniques developed to identify and measure the beam centering and pointing directions. These techniques have been developed and tested thoroughly against sets of up to 450 images representing both nominal and extreme conditions acquired during the initiation and power rising of the Laser Integration Line (LIL). This facility is fully consistent with the LMJ requirements, a complete laser chain with 4 beamlines. After presenting the basic design principles, we focus on the demonstrated performances measured.

Paper Details

Date Published: 8 September 2010
PDF: 14 pages
Proc. SPIE 7797, Optics and Photonics for Information Processing IV, 77970A (8 September 2010); doi: 10.1117/12.859668
Show Author Affiliations
Laurent Hilsz, Commissariat à l'Énergie Atomique et aux Énergies Alternatives (France)
Sylvain Challois, Alliance Vision (France)
Frédéric Nicaise, Alliance Vision (France)
Michel Luttmann, Commissariat à l'Énergie Atomique et aux Énergies Alternatives (France)
Alain Adolf, Commissariat à l'Énergie Atomique et aux Énergies Alternatives (France)


Published in SPIE Proceedings Vol. 7797:
Optics and Photonics for Information Processing IV
Abdul Ahad Sami Awwal; Khan M. Iftekharuddin; Scott C. Burkhart, Editor(s)

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