Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BO05: Laser Plasma Instabilities
9:30 AM–12:30 PM,
Monday, October 17, 2022
Room: Ballroom 111 B
Chair: John Palastro, University of Rochester
Abstract: BO05.00012 : A 3-D Cross-Beam Energy Transfer Model for Direct-Drive ICF*
11:42 AM–11:54 AM
Presenter:
Philip W Moloney
(Imperial College London)
Authors:
Philip W Moloney
(Imperial College London)
Aidan C Crilly
(Imperial College London)
Jeremy P Chittenden
(Imperial College London)
In this talk we will present the development of a laser ray tracing package in the 3D radiative-hydrodynamics code CHIMERA. An inverse projection algorithm for ray initialisation has been implemented, which significantly reduces noise in the energy deposition. A 3D CBET model has also been developed. We will present results from simulations of direct-drive implosions on the OMEGA laser using 1D hydrodynamics coupled to a 3D ray trace and the CBET model. We will also study the effect of enhanced beam mode asymmetries due to CBET in fully 3D calculations. Initially we will examine the how the ablation-phase growth of these perturbations varies with the beam-target ratio, with a long-term view to understanding the unexplained source of yield degradation which has been highlighted by recent statistical modelling campaigns [2].
[1] – A. Colaïtis et al., JoCP 443, 110537 (2021)
[2] – V. Gopalaswamy et al., PoP 28, 122705 (2021)
*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.
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