Dose and dose rate measurements in proton beams using the luminescence of beryllium oxide

T. Teichmann*, M. J. Gonzalez Torres, M. J. van Goethem, E. R. van der Graaf, J. Henniger, A. Jahn, H. H. Kiewiet, M. Sommer, W. Ullrich, C. Weinhold, T. Kormoll

*Corresponding author for this work

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    Abstract

    The present work investigates methods for dose and dose rate measurements in proton beams using the luminescence of beryllium oxide (BeO). Experiments are carried out to determine the response of the optically stimulated luminescence (OSL) of BeO aswell as the radioluminescence (RL) of BeO within the depth dose profile of a 190 MeV scattered proton beam. The acquired data is compared to an ionization chamber reference and a Monte Carlo simulation. Both dose readings from the RL and OSL measurements show accurate values in the entrance path with an increasing underestimation in the high LET region of the Bragg peak. The amount of this quenching is different for RL and OSL so that the ratio of RL to OSL dose measurements opens venues to correct the measurements to the accurate dose.

    Original languageEnglish
    Article number10015
    Number of pages16
    JournalJournal of Instrumentation
    Volume13
    DOIs
    Publication statusPublished - Oct-2018

    Keywords

    • Dosimetry concepts and apparatus
    • Instrumentation for particle-beam therapy
    • Scintillators and scintillating fibres and light guides
    • Solid state detectors
    • HIGH-ENERGY
    • DOSIMETER
    • OSL
    • DEPENDENCE
    • DETECTORS

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