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Title: Three-dimensional symmetry analysis of a direct-drive irradiation scheme for the laser megajoule facility

The symmetry of a Direct-Drive (DD) irradiation scheme has been analyzed by means of three-dimensional (3D) simulations carried out by the code MULTI (R. Ramis et al., Comput. Phys. Commun. 49, 475 (1988)) that includes hydrodynamics, heat transport, and 3D laser ray-tracing. The implosion phase of a target irradiated by the Laser Megajoule (LMJ) facility in the context of the Shock Ignition scheme has been considered. The LMJ facility has been designed for Indirect-Drive, and by this reason that the irradiation scheme must be modified when used for DD. Thus, to improve the implosion uniformity to acceptable levels, the beam centerlines should be realigned and the beam power balance should be adjusted. Several alternatives with different levels of complexity are presented and discussed.
Authors:
 [1] ;  [2] ; ;  [3]
  1. E.T.S.I. Aeronáuticos, Universidad Politécnica de Madrid, P. Cardenal Cisneros 3, E-28040 Madrid (Spain)
  2. Centre de Mathématiques et de Leurs Applications, ENS Cachan and CNRS, 61 Av. du President Wilson, F-94235 Cachan Cedex (France)
  3. CEA, DIF, F-91297 Arpajon (France)
Publication Date:
OSTI Identifier:
22303785
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DESIGN; HEAT TRANSFER; IMPLOSIONS; IRRADIATION; LASERS; SIMULATION; SYMMETRY; THERMONUCLEAR IGNITION; THREE-DIMENSIONAL CALCULATIONS