IMPROVEMENT OF SCALE-XSProc MULTIGROUP CROSS SECTION PROCESSING BASED ON THE CENTRM POINTWISE SLOWING DOWN CALCULATIONSeog Kim Kang, Andrew M. Holcomb, Friederike Bostelmann, Dorothea Wiarda and William WieselquistEPJ Web Conf., 247 (2021) 02011DOI: https://doi.org/10.1051/epjconf/202124702011