We have developed a novel ionizing radiation detector with TiO2 as a wide bandgap semiconductor. We present preliminary results from the application of this detector for monitoring the primary proton beam line in the COMET experimental area at the Japan Proton Accelerator Research Complex (J-PARC). The primary proton beam is a high current bunched beam containing approximately 10¹¹ protons per bunch delivered in 100ns, with a bunch spacing of $1.17 \mu\mathrm{s}$. Our results show the TiO2 detector is sensitive to bunch detection at such short timescales, and validates its application as a valuable diagnostic tool for monitoring intense radiation beams.