  We are going to perform an inclusive spectroscopy experiment of eta' mesic
nuclei with the 12C(p,d) reaction to study in-medium properties of the eta'
meson. In nuclear medium, the eta' meson mass may be reduced due to partial
restoration of chiral symmetry. In case of sufficiently large mass reduction
and small absorption width of eta' at normal nuclear density, peak structures
of eta' mesic states in 11C will be observed near the eta' emission threshold
even in an inclusive spectrum. The experiment will be carried out at GSI with
proton beam supplied by SIS using FRS as a spectrometer. The detail of the
experiment is described.
