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Defence & Security

ALSYMEX in defense

MegaJoule Laser (LMJ)

The MegaJoule Laser (LMJ) is one of the most important tools of the French Simulation program initiated in 1996 by CEA in order to perpetuate nuclear deterrence after the decision to stop nuclear tests in the Pacific Ocean. The aim of the program is to simulate the conditions of nuclear fusion with 176 laser beams (22 lines of 8 beams) concentrating their power on a few millimeter diameter target. Its prototype, LIL, is today the most powerful laser facility operated in Europe.

Involved in the program at a very early stage, ALSYMEX offers innovative solutions and services that meet strict requirements. It is today one of CEA's main partners in the laser subsystems:

  • design, manufacturing and on-site installation of the laser amplifying sections, including opto-mechanical components and associated mechanical infrastructures, following ISO5 to ISO8 cleanliness and vacuum constraints;
  • design, manufacturing and on-site installation of the LMJ prototype laser diagnostics;
  • design, manufacturing and on-site installation of the laser transport system;
  • manufacturing of the experimental chamber protection panels;
  • manufacturing of adjustable mirrors;
  • key subassemblies of the frequency conversion system;
  • maintenance of various equipment parts of the laser chains and of the experimental hall 
  • operation of the “Sol-Gel” optical coating facility.

Conventional defence

Manufacturing of parts and complex sub-assemblies for defence OEMs.