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Radiation Protection Dosimetry Advance Access originally published online on February 15, 2005
Radiation Protection Dosimetry 2005 113(3):266-274; doi:10.1093/rpd/nch462
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org

Monte Carlo simulations for the design of the treatment rooms and synchrotron access mazes in the CNAO Hadrontherapy facility

Alessandro Porta*, Stefano Agosteo and Fabrizio Campi

Centro Studi Nucleari Enrico Fermi (CeSNEF), Polytechnic of Milan, Via Ponzio 34/3, I-20133 Milan, Italy

* Corresponding author: alessandro.porta{at}polimi.it

Received November 12, 2004, amended January 14, 2005, accepted January 26, 2005

The Italian National Centre for Hadrontherapy is based on a synchrotron capable of accelerating protons and carbon ions up to 250 MeV and 400 MeV u–1, respectively. The present work describes some Monte Carlo simulations performed to verify the design of the treatment rooms and synchrotron access mazes. The different shielding efficiency and induced activations of the common concrete and the baryte concrete were analysed. In such a radiation field, i.e. with high-energy neutrons, the baryte concrete gains twice the activation than the common concrete without any relevant dose reduction. Moreover, the simulations have stressed, again, the discrepancies between H*(10) and E in such cases where the neutron radiation field is the dominant component and, particularly, in the medium–high energy range.


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