Specially developed acceleration plug-in to use with 'mkhalo' program of falcON package to create initial conditions described in Shukirgaliyev, Parmentier, Berczik, Just, (2017) A&A, 605, A119 https://ui.adsabs.harvard.edu/abs/2017A%26A...605A.119S/abstract See also the appendix of thesis Shukirgaliyev (2018) https://ui.adsabs.harvard.edu/abs/2018PhDT.......254S/abstract
Instructions how to use are in the Appendix of PhD thesis of Shukirgaliyev (https://doi.org/10.11588/heidok.00025699).