Modeling of crossed-beam energy transfer (CBET) holds paramount importance in inertial confinement fusion. Particularly in the direct-drive ignition schemes, both ray-based and wave-based CBET models pose considerable computational challenges when dealing with high-refraction scenarios. Besides, the ray-based model inevitably leverages empirical factors. In this work, to balance the modeling fidelity and computational efficiency, we adopt the wave-based model and construct a full-explicit symplectic algorithm to speed up the simulation. The CBET model consists of two coupled Schrödinger equations and linearized fluid equations. The reliability of both the model and the algorithm is confirmed by the good agreement on the numerical CBET results between our developed BEAM code and the particlein-cell simulations. Furthermore, we apply the developed BEAM code to investigate CBET in the double-cone ignition scheme[1]. The simulation results indicate that the focusing and divergence of reflected light and the target geometry affect the crossing volume directly. Consequently, the energy loss from the cone target is less, compared to the spherical and planar targets[2].
 

crossed-beam energy transfer,numerical simulation,double cone ignition,laser confinement fusion,laser-plasma interactions