Abstract
In heavy ion beam (HIB) inertial confinement fusion (ICF), key issues include an accelerator design for an intense HIB, an efficient HIB transport, interaction between HIB and reactor gas, a HIB-target interaction, a reactor design and so on. In this paper, three-dimensional computer simulations are performed for a HIB irradiation onto a direct-driven spherical fuel pellet in HIB ICF in order to clarify the dependence of multi-HIB illumination non-uniformity on parameter values of HIB illumination. We investigate the energy deposition non-uniformity using 12, 20, 32, 60, 92 and 120-beam irradiation systems. In this study, effects of HIB temperature and emittance are also evaluated. The calculation results demonstrate that we can realize a sufficiently low non-uniform energy deposition, for example, less than 2[%] even for a 32-beam irradiation system using the Gaussian beam.
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