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Radiation dosimetry with a Triple-GEM detector
Dosimetría de radiaciones con un detector Triple-GEM
DOI:
https://doi.org/10.15446/mo.n66.104505Keywords:
detectors, dosimetry, medical applications, radiation, x-rays (en)aplicaciones médicas, detectores, dosimetría, radiación, rayos x (es)
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We studied the properties of the gaseous detector triple-GEM (triple Gas Electron Multiplier) as a dosimeter with different ionizing radiation sources used in medical applications. The detector was calibrated in energy with an Iron-55 radioactive source. We measured doses of radiation from different radioactive sources as well as from a medical portable X-ray machine, and compared them to reference values. The detector presents a linear dependence between radiation intensity and measured dose. A calibration factor of 1.13x104 was found, independently of the radiation source. These results allow us to conclude that the triple-GEM detector has the potential to be used as a dosimeter in medical applications.
Estudiamos las propiedades del detector triple-GEM (multiplicador de gas de electrones triple) como dosímetro, con diferentes fuentes de radiación ionizante utilizadas en aplicaciones médicas. El detector fue calibrado en energía usando una fuente radiactiva de hierro-55. Se midieron las dosis de radiación de diferentes fuentes radiactivas y de un generador médico de rayos X, y se compararon con valores de referencia. El detector presenta una dependencia lineal entre la intensidad de la radiaciÅLon y la dosis medida. Se halló un factor de calibración de 1.13 x104, independiente de la fuente de radiación. Estos resultados nos permiten concluir que el detector triple-GEM tiene el potencial para ser utilizado como dosímetro en aplicaciones médicas.
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