  The RAON, a superconducting linear accelerator for RISP (Rare Isotope Science
Project), will use a charge stripper in order to increase the charge states of
the heavy ions for effective acceleration in the higher energy part of the
linac. The charge stripper affects the beam qualities by scattering when the
heavy ions go through the charge stripper. Moreover we have to select and
accelerate proper charge states between 77+ and 81+ for uranium beam case in
order to satisfy the beam power requirement at an IF (Inflight Fragmentation)
target. This work focuses on the beam optics affected by the charge stripper in
the 180-dgree bending section.
