New beam monitoring tool for radiobiology experiments at the cyclotron ARRONAX.
Radiat Prot Dosimetry
; 166(1-4): 257-60, 2015 Sep.
Article
en En
| MEDLINE
| ID: mdl-25897142
ABSTRACT
The ARRONAX cyclotron is able to deliver alpha particles at 68 MeV. In the frame of radiological research, a new method is studied to infer in situ the deposited dose it is based on the online measurement of the bremsstrahlung (>1 keV) produced by the interaction of the incident particle with the medium. Experiments are made using bombarded poly(methyl methacrylate) (PMMA)-equivalent water targets in order to characterise this continuous X-ray spectrum. The intensity of the bremsstrahlung spectrum allows for the beam monitoring. A simulation code of the bremsstrahlung has been built, and a good agreement is found with the experimental spectra. With this simulation, it is possible to predict the sensibility of this method:
it varies with the target thickness, showing a good sensibility for thin target (<1000 µm) and saturation for thicker ones. Bremsstrahlung spectrum also shows a sensibility on the target's chemical composition.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
1_ASSA2030
Problema de salud:
1_financiamento_saude
Asunto principal:
Radiobiología
/
Planificación de la Radioterapia Asistida por Computador
/
Ciclotrones
/
Polimetil Metacrilato
/
Modelos Teóricos
Tipo de estudio:
Health_economic_evaluation
/
Prognostic_studies
Idioma:
En
Revista:
Radiat Prot Dosimetry
Año:
2015
Tipo del documento:
Article
País de afiliación:
Francia