Optimization of beam line parameters for space charge dominated multi-species beam using random search method

► Transport and matching of space charge dominated multi-species beam using beam envelope equations. ► Optimization of transport of primary species and maximization of the loss of other unwanted species by random search method. ► Beam dynamics includes effective emittance and beam current after passing through the slit. ► Numerical results of the beam selection and optimization of proton in the presence of H2+ and H3+ species.