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LMJ status: Fifth bundle commissioning and PW class laser coupling
Author(s): M. Nicolaizeau; J-L. Miquel
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Paper Abstract

The Laser Megajoule facility, developed by the CEA is based on 176 Nd:glass laser beams focused on a micro-target positioned inside a 10-meter diameter spherical chamber. The facility will deliver a total energy of 1.4MJ of UV light at 0.35 μm and a maximum power of 400 TW. To complete the experimental capabilities of LMJ, a PW beam, PETAL, has been added to the LMJ’s beams. PETAL offers a combination of a very high intensity beam, synchronized with the nanosecond beams of the LMJ. This combination expands the LMJ experimental field in High Energy Density Physics (HEDP). LMJ-PETAL is open to the academic communities for 20 to 30 % of the facility operating time. Since the operational commissioning of the LMJ in October 2014 (with the first bundle of 8 beams) and the second step with two bundles at the end of 2016, several experimental campaigns have been achieved. The installation of new bundles is continuing, simultaneously to plasma experiments. The first phase of nuclear commissioning of LMJ has been achieved to take into account high-energy particles created by PETAL and neutron production from D-D fusion reaction. A subsequent phase will take into account tritium targets. More than a third of the laser bundles are assembled, forty beams are operational, nine plasma diagnostics are commissioned (including 4 specific for PW physics). The next milestones for 2019 are: the first physics experiments using the 40 operational beams, the commissioning of two additional bundles, and the first experiments with neutrons production.

Paper Details

Date Published: 4 March 2019
PDF: 10 pages
Proc. SPIE 10898, High Power Lasers for Fusion Research V, 1089802 (4 March 2019); doi: 10.1117/12.2507193
Show Author Affiliations
M. Nicolaizeau, CEA-Cesta (France)
J-L. Miquel, CEA-DAM Ile-de-France (France)

Published in SPIE Proceedings Vol. 10898:
High Power Lasers for Fusion Research V
Abdul A. S. Awwal; Constantin L. Haefner, Editor(s)

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