Monte Carlo evaluation of Extended range REM meter WENDI-II for its application in shielding and radiation area monitoring in Compact Proton Therapy Centers (CPTC)

García Fernández, Gonzalo and Gallego Díaz, Eduardo F. and Vega-Carrillo, Héctor René and Guzmán-García, Karen Arlete and Cevallos Robalino, Lenin Estuardo (2018). Monte Carlo evaluation of Extended range REM meter WENDI-II for its application in shielding and radiation area monitoring in Compact Proton Therapy Centers (CPTC). In: "XVIII INTERNATIONAL SYMPOSIUM ON SOLID STATE DOSIMETRY (ISSSD 2018)", September 24 to 28th, 2018, Oaxaca, México. pp. 1-27.

Description

Title: Monte Carlo evaluation of Extended range REM meter WENDI-II for its application in shielding and radiation area monitoring in Compact Proton Therapy Centers (CPTC)
Author/s:
  • García Fernández, Gonzalo
  • Gallego Díaz, Eduardo F.
  • Vega-Carrillo, Héctor René
  • Guzmán-García, Karen Arlete
  • Cevallos Robalino, Lenin Estuardo
Item Type: Presentation at Congress or Conference (Article)
Event Title: XVIII INTERNATIONAL SYMPOSIUM ON SOLID STATE DOSIMETRY (ISSSD 2018)
Event Dates: September 24 to 28th, 2018
Event Location: Oaxaca, México
Title of Book: XVIII INTERNATIONAL SYMPOSIUM ON SOLID STATE DOSIMETRY (ISSSD 2018). PROCEEDINGS
Date: 2018
Subjects:
Freetext Keywords: Proton therapy; Ambient Dose; WENDI-II; MCNP6
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Proton therapy (PT) involve accelerated proton beams with energies between 70 and 230 MeV, to irradiate cancerous tumors with an average dose rate of 2 Gy·min-1 in 1- , in agreement with energy deposition plot (Bragg Curve). Using protons, the amount of radiation deposited in the target volume is maximum while healthy tissues and critical organs surrounding the tumor receive fewer doses, thus reducing the risk of developing secondary cancer years after the treatment. Therefore, using protons is a huge advantage in the treatment of several types of cancer compared to other kind of radiation (X-rays, gamma rays or electrons). More than 50 Compact Proton Therapy Centers (CPTC’s) are currently under planning and construction around the world. A modern CPTC fills approximately 390 m2 , and has three key components, namely, the proton accelerator (AR), the beam transport and energy selection system (ESS), and the Compact Gantry Treatment Room (CGTR). Nevertheless, interactions of protons with components of the facility and patients yield a broad emission of secondary particles, mainly high-energy neutrons up to 230 MeV, and photons. Hence, optimal design and calculation of shielding in CPTC’s evolves theoretical assumptions in the design phase, and experimental verifications through measurements in the facility along the commissioning test works, before operation. The aim of this work was to analyze and to evaluate the response of an extended range neutron rem meter, WENDI-II, for its application in shielding and radiation area monitoring in CPTC facilities by estimating the equivalent ambient dose H*(10), through the Monte Carlo code MCNP6. A good match has been obtained with similar works founded elsewhere. Finally, as a first step towards the characterization of WENDI-2 response in continuous high energy neutron fields, MCNP6 simulations have also been carried with an AmBe source inside the neutronic hall of Energy Engineering Department of Universidad Politecnica de Madrid (EED-UPM). This work is framed inside the project Contributions to Shielding and Dosimetry of Neutrons in CPTC, which evolves the development of methodologies to analyze the shielding efficiency and to evaluate the dose to workers and general public in these facilities.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentIND2017/AMB-7797UnspecifiedUnspecifiedContributions to Shielding and Dosimetry of Neutrons in CPTC

More information

Item ID: 55084
DC Identifier: http://oa.upm.es/55084/
OAI Identifier: oai:oa.upm.es:55084
Official URL: http://www.smid.org.mx/eng.htm
Deposited by: Memoria Investigacion
Deposited on: 27 May 2019 14:24
Last Modified: 27 May 2019 14:24
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