Generation of Short-Duration, High-Power heavy ion beams in BRing at HIAF

摘要: Maximizing beam energy deposition requires capturing the entire ion population within a single short-duration bunch to achieve peak power. Using the typical beam 238 U 35+ in the Booster Ring (BRing) at the High Intensity Heavy-Ion Accelerator Facility (HIAF) as an example, we systematically analyze the manipulation processes.Initially, four bunches generated by the RF system at harmonic number ℎ = 4 are combined into a single bunch via two distinct strategies: (i) direct adiabatic debunching followed by rebunching at ℎ = 1, and (ii) sequential 4:2:1 bunch merging.The resulting single bunch undergoes longitudinal phase space rotation for compression. By quantitatively comparing final bunch length and peak power, we identify the optimal merging scheme and provide the corresponding RF voltage profile. Furthermore, space charge effects on beam parameters are evaluated due to the high beam intensity.