7 September 2010 Redesign of the image processing techniques used for the alignment of the LMJ amplifier section
Author Affiliations +
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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Laurent Hilsz, Laurent Hilsz, Sylvain Challois, Sylvain Challois, Frédéric Nicaise, Frédéric Nicaise, Michel Luttmann, Michel Luttmann, Alain Adolf, Alain Adolf, "Redesign of the image processing techniques used for the alignment of the LMJ amplifier section", Proc. SPIE 7797, Optics and Photonics for Information Processing IV, 77970A (7 September 2010); doi: 10.1117/12.859668; https://doi.org/10.1117/12.859668


First Swiss bachelor in Photonics
Proceedings of SPIE (October 07 2015)
Measurement method of spherical large curvature radius
Proceedings of SPIE (October 14 2012)
The Commercial Challenges Of Pacs
Proceedings of SPIE (August 02 1984)

Back to Top