Simulation of beam bunching in the presence of space charge effects

In this article, we present the results of numerical simulations carried out to optimise the bunching performance of sinusoidal, two harmonic and double drift bunchers in the presence of space charge using disc model in the longitudinal direction and K–V envelope equations in the transverse direction. We have found out the optimum values of buncher parameters. The effect of the buncher voltage and drift distance on the bunching efficiency and density distribution at the time focus has been studied for various values of the beam current. Results are compared with those obtained in the case of low beam current.