GOBET, F.; CARON, J.; BESSIERES, I.; BONNET, T.; ALÉONARD, M.M.; ANTOINE, M.; BARBERET, P.; COMET, M.; DENIS-PETIT, D.; FEUGEAS, J.L.; HANNACHI, F.; HULIN, S.; KANTOR, G.; NICOLAI, P.; SANTOS, J.J.; TARISIEN, M.; TIKHONCHUK, V.; VERSTEEGEN, M.

doi:10.1016/j.radmeas.2016.01.003

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GOBET, F.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

CARON, J.

BESSIERES, I.

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Radiation Measurements. 2016-01-07, vol. 86, p. 16–23

Elsevier

Résumé en anglais

The knowledge of the absolute energy distributions of the particles emitted from a clinical accelerator is important for the evaluation of Monte Carlo simulations developed for treatment planning. In this paper, an original approach is presented which allows to measure the absolute energy distribution of the electron beam delivered by a Varian 21Ex medical accelerator. The electron beam was characterized at the isocenter with calibrated image plates covering the exit window of a magnetic spectrometer. The characteristics of the electron beam emitted from an effective source have been inferred from the measurements using the Geant4 Monte Carlo code. The contribution of direct electrons to the absolute depth-dose curve in a water phantom is estimated.< Réduire

Mots clés en anglais

Electron spectrometer

Position sensitive detectors

Monte Carlo methods

Accelerators

Radiation control

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Experimental and Monte Carlo absolute characterization of a medical electron beam using a magnetic spectrometer

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