Reference dosimetry of proton pencil beams based on dose-area product: a proof of concept

This paper describes a novel approach to the reference dosimetry of proton pencil beams based on dose-area product ( ##IMG## [http://ift.tt/2qN45MT] {${\rm DAP_w}$} ). It depicts the calibration of a large-diameter plane-parallel ionization chamber in terms of dose-area product in a 60 Co beam, the Monte Carlo calculation of beam quality correction factors—in terms of dose-area product—in proton beams, the Monte Carlo calculation of nuclear halo correction factors, and the experimental determination of ##IMG## [http://ift.tt/2rL9zoJ] {${\rm DAP_w}$} of a single proton pencil beam. This new approach to reference dosimetry proves to be feasible, as it yields ##IMG## [http://ift.tt/2qN5WSa] {${\rm DAP_w}$} values in agreement with the standard and well-established approach ...

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