Affiliation:
1. Universidad de Castilla-La Mancha
2. CEA
3. Universidad Politécnica de Madrid
Abstract
Abstract
The OMEGA installation is separated into two independent sub-configurations with 24 and 36 laser beams each one minimising direct drive illumination non-uniformity. Two different laser focal spots associated one to each configuration are proposed to apply the zooming technique in order to increase the laser-target coupling efficiency. This approach is used by 1D hydrodynamics simulations of the implosion of a direct-drive capsule characterised by a relatively large aspect ratio A = 7 and an optimized laser pulse shape delivering a maximum of 30 TW and 30 kJ. It is shown that zooming allows for a 1D-thermonuclear energy gain greater than one while without zooming the thermonuclear gain remains largely below one.
Publisher
Research Square Platform LLC
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