CHARACTERIZATION OF AN APPRATUS FOR PHOTON-ION COLLISION EXPERIMENT AT THE SPRING-8 H. Yamaoka*, M. Oura*, T. Igarashi**, K. Kawatsura**, J. Kimata#, T. Hayaishi#, T. M. Kojima*, M. Kimura+, T. Sekioka++ and M. Terasawa++ *Harima Institute, The Institute of Physical and Chemical Research (RIKEN), Hyogo, Japan **Kyoto Institute of Technology, Sakyo, Kyoto, Japan #University of Tsukuba, Ibaraki, Japan +Kochi University of Technology, Kochi, Japan ++Himeji Institute of Technology, Himeji, Hyogo, Japan An appratus with a compact ECR ion source and a electrostatistic product-ion analyzer has been developed to study photoabsorption processes of ions (including multiply charged ions) at the SPring-8. The priliminary results of the characteristics of the apparatus is reported. Outline of future experiments is briefly described.