Development of micrometer-scaled aluminum-enriched phosphate glass beads with a silver activator for real-time profile measurement of a clinical carbon beam

Abstract Real-time monitoring of clinical carbon beams from a synchrotron accelerator was accomplished by using aluminum-enriched phosphate glass with silver activator. Build-up effects are often observed in commercially available silver-containing that strongly limit the use real-time dosimetry particle therapy fields. In this study, we modified composition adding an additional 0.2 mol% aluminum impurity to cause broadband radioluminescence under beam exposure. Convenient radiation on submillimeter scales beads. Optical fiber demonstrated, and stable visualized for each bunch 290 MeV u −1 different fluxes up 3 × 10 9 particles/spill (clinical conditions).