SiPM-on-Tile Characterization Studies for the EIC

We present characterization studies of scintillating tiles with signals read out using silicon photomultipliers (SiPMs) for use in a high-granularity calorimeter in the future Electron-Ion Collider. Using cosmic rays, we study the light yield and timing resolution of various SiPM-on-tile configurations and geometries. We have also mounted a collimated radiation source and LED to 2D stage stepper motors to study the signal uniformity within a tile, and the cross-talk between adjacent cells. In addition, we tested a 3D printed frame structure for its ability to isolate signals between cells. I will summarize the present status and plans for R&D on SiPM-on-tile technology for the EIC and discuss the resulting physics performance that it can yield.