The measurements of radiation damage of a tile/fiber scintillator modu
les to be used for the SDC calorimeter are described. Four tile scinti
llator modules were irradiated up to 6 Mrad with the BEPC 1.1 GeV elec
tron beam. We have studied the light output at different depths in the
modules and for different integrated doses. The recovery process and
the dependence of radiation damage on the ambient atmosphere are also
investigated.