Development of a LYSO-Array Detector for Measurement of Proton-Beam Profiles
- Here, we report on the development of a beam-scan detector that can quantitatively measure proton-beam profiles. The core component of the beam-scan detector was composed of a 46 0.9-mm-thick LYSO (Lutetium Yttrium Oxyorthosilicate) scintillator array. The LYSO-scintillator array was equipped with a 46-channel silicon photodiode and current-mode signal processing electronics. The beam detector was tested on a 45-MeV proton beam provided by the MC50 proton cyclotron at the Korea Institute of Radiological and Medical Science (KIRAMS). This system was shown to reliably detect and measure proton-beam profiles at currents ranging from 1 to 5 nA. We expect that the current beam detector operating in the charge-integration mode will allow us to perform qualified measurements for therapeutic proton and heavy-ion beams.