Report of LuAG:Ce Ceramic Fibers for the RADiCAL Detector Concept

HEP experiments at future hadron colliders require fast and radiation hard calorimetry. An ultra-compact RADiCAL electromagnetic calorimetry with radiation hard LYSO:Ce as active material and LuAG:Ce scintillating fibers as wavelength shifter is under development. We report an investigation on Φ1 mm LuAG:Ce ceramic fibers produced by using laser heated pedestal growth method at Shanghai Institute of Ceramics. Their photoluminescence spectra, quantum yield, and longitudinal uniformity were measured and compared to Y-11 fiber and quartz capillary wavelength shifters.