Observatorio de I+D+i UPM

Memorias de investigación
Ponencias en congresos:
Neutron dosimetry, radioprotection and shielding verification in commissioning of compact proton therapy centers (CPTC) using MCNP6 code and experimental measurements
Año:2019
Áreas de investigación
  • Mecanismos de interaccion,
  • Dosimetria,
  • Fuentes de radiacion y detectores
Datos
Descripción
Introduction: Compact Proton Therapy Centers (CPTC) is referred to facilities with a single treatment room. The goal of this work is to carry out neutron dosimetry and shielding studies by estimating ambient dose equivalent H*(10) around CPTC facilities, aiming to protect the radiation workers and the public. Experimental measurements will be compared with values obtained with Monte Carlo calculations in order to develop the commissioning of the facility. Methods: H*(10) due to stray neutrons in CPTC was calculated using Monte Carlo methods through MCNP6 code and CAD designs and models. The facility modeled is made up of a superconducting proton accelerator room and a treatment room with a rotating gantry. Several models of the radiation sources and the facility were simulated, starting from the manufacturer?s model, with conservative assumptions, followed by models recently published with more realistic assumptions, and finally by models with more efficient shielding materials against neutron radiation. Experimental measurements will be carried out with extended range rem meters, WENDI-II and LUPIN-II types and conventional detectors. Results: Using the more conservative assumptions a maximum H*(10) value obtained was 0.4 mSv/year around the accelerator room. In models based on more realistic and accurate assumptions, the results are even lower. Absolute responses of extended range REM meters used in the experimental measurements have been previously characterized. Conclusions: The shielding effectiveness against diffuse neutron radiation in CPTC facilities has been verified with MCNP6, using different models, materials and assumptions of radiation source. In any case, results achieved are below internationally accepted dose limits.
Internacional
Si
Nombre congreso
58th Annual Conference of the Particle Therapy Cooperative Group (PTCOG58
Tipo de participación
960
Lugar del congreso
Manchester
Revisores
Si
ISBN o ISSN
CDP08UPM
DOI
10.14338/IJPT.19-PTCOG-6.4
Fecha inicio congreso
10/06/2019
Fecha fin congreso
15/06/2019
Desde la página
402
Hasta la página
402
Título de las actas
Proceedings to the 58th Annual Conference of the Particle Therapy Cooperative Group (PTCOG58) 10-15 June 2019
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Gonzalo Felipe Garcia Fernandez (UPM)
  • Autor: Lenin Estuardo Cevallos Robalino (UPM)
  • Autor: Karen Arlet Guzman Garcia (UPM)
  • Autor: José Mª Gómez-Ros (Ciemat)
  • Autor: Eduardo Florentino Gallego Diaz (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Ingeniería Energética
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)