Abstract: Based on nonlinear feedback control method, waveletbased feedback controller as a especial nonlinear feedback function is designed for controlling beam halochaos in highcurrent accelerators of driven clean nuclear power system. In this article, PIC simulations show that suppression of beam halochaos are realized effectively after discrete control of waveletbased feedback is applied to five kinds of the initial proton beam distributions, respectively. The beam halo strength factor is quickly reduced to zero, and other statistical physical quantities of beam halochaos are more than doubly reduced. These performed PIC simulation results demonstrate that the developed methods are very effective for control of beam halochaos. Potential application of the beam halochaos control m