| Popis: |
A precise measurement of radiation energy corresponding to position is important in radiation monitoring as well as proton therapy technique utilizing a particle accelerator. Proton Bragg peak makes it possible to modulate dose distribution in target by charged particle energy loss. We develop and test a real-time system using radio-photoluminescence (RPL) glass for accelerator particle beam tuning. The RPL glass has promising characteristics, such as a linear dosimeter equivalent to ionizing irradiation, no fading, data accumulation, and repeatability through thermal treatment. Utilizing this system, the energy deposit of the proton beam irradiated RPL glass is measured under an ultraviolet (UV) excitation source in real-time. 45 MeV and 100 MeV proton beams are generated from a cyclotron and a linear accelerator respectively. The proton Bragg curve corresponding to the proton energy and RPL is verified by GEANT4 simulation. This system promises to provide useful information on beam tuning techniques and quality verification through real-time radiation monitoring and recordings of the accumulated dose on repeatable RPL glass. |
