A hybrid simulation of carbon ion beams generation, acceleration and the evaluation of the ignition condition

We have investigated the acceleration of quasi-monoenergetic ion beams. LPIC++ code has been used to simulate the radiation pressure acceleration hole-boring mechanism. To reach the quasi-monoenergetic ion beam used for ionic fast ignition, the beams with low energy spread and suitable peak energy are the best choice. Effective parameters including intensity for laser, thickness, density and charge state for foil have been evaluated to have a stable acceleration. Based on the results, optimal quasi-monoenergetic ion beams of the laser with an intensity of 1.9 ×1021 W / cm2, pure carbon foil with 0.56μm thickness, and density 15 have been selected with the average energy 624 MeV and 720 MeV. Also, by applying the Deira-4 code, the potential of the aforementioned beams with different ignition energies from 8.5-11 kJ has been studied. For the pre-compressed DT fuel capsule with the density 300 g/cm3 and initial temperature 1keV, the ignition conditions have been considered. Subsequently, we found that the ignition threshold conditions for multi-peak beams are more favorable than those of the ideal single-peak beams. It is shown that the ignition energy threshold of multi-peak beams is about 10 kJ, which is more than the ignition energy for the ideal single-peak beams that are close to 7 kJ.